WO2002088148A1 - Isoreticular metal-organic frameworks, process for forming the same, and systematic design of pore size and functionality therein,with application for gas storage - Google Patents
Isoreticular metal-organic frameworks, process for forming the same, and systematic design of pore size and functionality therein,with application for gas storage Download PDFInfo
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- WO2002088148A1 WO2002088148A1 PCT/US2002/013763 US0213763W WO02088148A1 WO 2002088148 A1 WO2002088148 A1 WO 2002088148A1 US 0213763 W US0213763 W US 0213763W WO 02088148 A1 WO02088148 A1 WO 02088148A1
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- B01J20/2808—Pore diameter being less than 2 nm, i.e. micropores or nanopores
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- B01J20/223—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material containing metals, e.g. organo-metallic compounds, coordination complexes
- B01J20/226—Coordination polymers, e.g. metal-organic frameworks [MOF], zeolitic imidazolate frameworks [ZIF]
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- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
- B01J20/28069—Pore volume, e.g. total pore volume, mesopore volume, micropore volume
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- B01J20/28078—Pore diameter
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- B01J20/30—Processes for preparing, regenerating, or reactivating
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F3/00—Compounds containing elements of Groups 2 or 12 of the Periodic System
- C07F3/003—Compounds containing elements of Groups 2 or 12 of the Periodic System without C-Metal linkages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C11/00—Use of gas-solvents or gas-sorbents in vessels
- F17C11/007—Use of gas-solvents or gas-sorbents in vessels for hydrocarbon gases, such as methane or natural gas, propane, butane or mixtures thereof [LPG]
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- B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
- B01J2531/20—Complexes comprising metals of Group II (IIA or IIB) as the central metal
- B01J2531/26—Zinc
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
- B01J31/1691—Coordination polymers, e.g. metal-organic frameworks [MOF]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
Definitions
- the present invention relates generally to metal-organic frameworks, and more specifically to such frameworks, which are reticulated into a predetermined porous material with a tailored pore size and/or functionality, and their application as sorbents for storing gases such as methane.
- porous materials One of the great challenges in porous materials is the design and the achievement of a desired porous material with a tailored pore size and/or functionality. To date, it has not been possible to consistently and efficiently (with a high yield) render porous materials having predetermined characteristics. A particular goal is to alter chemical composition, functionality, and molecular dimensions without changing the underlying topology. See A. Stein, S. W. Keller and T. E. Mallouk, Science 259, 1558 (1993); and P. J. Fagan and M. D. Ward, Sci. Am. 267, 48 (1992).
- Porous materials are mainly used for gas/liquid separation, catalysis, luminescence-based sensors, and gas storage. To achieve a specific application, a porous material with a defined pore size and function is needed. To achieve these challenging objectives, many scientists have devoted their knowledge and programs to develop this area.
- This framework was formed by diffusing triethylamine into a solution of zinc (II) nitrate and H 2 BDC (benzenedicarboxylic acid) in N,N'-dimethyl-formamide/chlorobenzene. This resulted in the deprotonation of H 2 BDC and its reaction with Zn 2+ ions.
- the rendered cubic crystals were designated metal-organic framework (MOF)-5 and were found to comprise an extended, porous network having a three-dimensional intersecting channel system with 12.94 A spacing between centers of adjacent clusters.
- MOF-5 crystalline structure described in Nature, supra, has desirable characteristics, the process for making the structure actually renders a mixture of crystalline structures, the MOF-5 being a relatively low percentage of the mix. Further, the Nature MOF-5 structure appears to be limited to a single benzene ring as a linkage between adjacent Zn 4 (O)O 12 C 6 clusters. Others have recently pursued the assembly of extended structures from molecular building blocks. See V.A. Russell, C.C. Evans, W.J. Li and M.D. Ward, Science 276, 575 (1997); Y.H. Kiang, G.B. Gardner, S. Lee, Z.T. Xu and E.B. Lobkovsky, J. Am. Chem. Soc. 121, 8204 (1999); and B.F. Hoskins and R. Robson, J. Am. Chem. Soc. Ill, 5962 (1989).
- expanded structures have been formed using long links to increase the spacing between vertices in a net, yielding void space proportional to the length of the linker.
- expanded structures provide for large pores (and one would therefore expect a high porosity), in practice they are often found to be highly undesirably interpenetrated and to have low porosity.
- the present invention addresses and solves the above-mentioned problems by providing an isoreticular metal-organic framework (IRMOF), consisting essentially of a plurality of secondary building units (SBUs), each of the plurality of SBUs comprising an M 4 O(CO 2 ) 6 cluster; and a compound linking adjacent SBUs, the linking compound comprising a linear ditopic carboxylate having at least one phenyl group and at least one functional group X attached to the at least one phenyl group.
- the inventive IRMOF has a substantially permanent porosity and is stable, with or without the presence of guest molecules.
- a method of forming the inventive isoreticular metal-organic framework comprises the step of dissolving at least one metal salt and at least one linear ditopic carboxylate in a solvent to form a solution.
- the solution is then crystallized to form the IRMOF.
- the crystallizing step is carried out by at least one of: leaving the solution at room temperature; adding a diluted base to the solution to initiate the crystallization; diffusing a diluted base into the solution to initiate the crystallization; and transferring the solution to a closed vessel and heating to a predetermined temperature.
- the selected conditions are ideal to form the cluster M 4 O(CO 2 ) 6 (the SBU).
- the SBUs in the case of IRMOFs occupy the corners of the cube, and ditopic linkers link them.
- member(s) of the IRMOFs series have been found to have very high methane storage capacity.
- inventive IRMOF(s) have been found to have a methane storage capacity of about 155 cm3/cm3, which is the highest methane storage capacity in any crystalline porous material to date.
- Figure 1 is a diagrammatic representation of IRMOF 1 of the present invention
- Figure 2a is a graphic representation of an XRPD of IRMOF- 1 for Method 1 of the present invention
- Figure 2b is graphic representation of an XRPD of IRMOF- 1 for Method 1 of the present invention
- Figure 2c is a graphic representation of an XRPD of IRMOF- 1 for Method 3 of the present invention.
- Figure 3 is a diagrammatic representation of a crystal structure for IRMOF-3 of the present invention.
- Figure 4a is a graphic representation of an XRPD of IRMOF-3 of the present invention.
- Figure 4b is a graphic representation of a simulated XRPD of IRMOF-3
- Figure 5 is a graphic representation of an InfraRed spectrum for IRMOF- 3 of the present invention
- Figure 6 is a graphic representation of TGA on
- Figure 7 is a graphic representation of an InfraRed spectrum for Zn 4 O(BDC[NH 2 ]) 3 -(CHCl 3 ) x of the present invention.
- Figure 8 is a graphic representation of TGA Zn 4 O(BDC[NH 2 ]) 3 -(CHC 1 3 ) x of the present invention.
- Figure 9 is a graphic representation of an N 2 Sorption on IRMOF-3 @ 77K of the present invention.
- Figure 10 is a graphic representation of an organic vapor sorption at RT on IRMOF-3 of the present invention
- Figure 11 is a diagrammatic representation of a crystal structure for
- Figure 12a is a graphic representation of an XRPD of IRMOF-6 of the present invention.
- Figure 12b is a graphic representation of a simulated XRPD of IRMOF-6 of the present invention.
- Figure 13 is a graphic representation of an InfraRed spectrum for IRMOF-6;
- Figure 14 is a graphic representation of a TGA for IRMOF-6, Zn 4 O(BDC[C 2 H 4 ]) 3 -(DEF) x of the present invention
- Figure 15 is a graphic representation of an InfraRed spectrum for
- Figure 16 is a graphic representation of a TGA on Zn 4 O(BDC[C 2 H 4 ]) 3 -(CHCl 3 ) x of the present invention
- Figure 17 is a graphic representation of sorption on Zn 4 O([H 4 C 2 ]BDC) 3 of the present invention
- Figure 18 is a diagrammatic representation of a crystal structure for IRMOF-7;
- Figure 19a is a graphic representation of XRPD of IRMOF-7;
- Figure 19b is a graphic representation of a simulated XRPD of IRMOF-7 of the present invention.
- Figure 20 is a graphic representation of XRPD of IRMOF-8 of the present invention.
- Figure 21 is a diagrammatic representation of a crystal structure for IRMOF-9 of the present invention
- Figure 22a is a graphic representation of XRPD of IRMOF-9 of the present invention
- Figure 22b is a graphic representation of simulated XRPD of IRMOF-9;
- Figure 23 is a graphic representation of an InfraRed spectrum for IRMOF-9 of the present invention.
- Figure 24 is a diagrammatic representation of a crystal structure for
- Figure 25a is a graphic representation of XRPD of IRMOF- 12 of the present invention.
- Figure 25b is a graphic representation of simulated XRPD of IRMOF- 12 of the present invention.
- Figure 26 is a graphic representation of InfraRed spectrum for IRMOF- 12 of the present invention.
- Figure 27 is a diagrammatic representation of a crystal structure for IRMOF- 11 of the present invention
- Figure 28a is a graphic representation of XRPD of IRMOF- 11 of the present invention
- Figure 28b is a graphic representation of a simulated XRPD of IRMOF- 11 of the present invention.
- Figure 29 is a graphic representation of an InfraRed spectrum for IRMOF- 11 of the present invention.
- Figure 30 is a diagrammatic representation of a crystal structure for IRMOF- 14 of the present invention.
- Figure 31a is a graphic representation of XRPD of IRMOF- 14 of the present invention.
- Figure 3 lb is a graphic representation of a simulated XRPD of IRMOF- 14 of the present invention.
- Figure 32 is a graphic representation of an InfraRed spectrum for IRMOF- 14 of the present invention.
- Figure 33 is a graphic representation of XRPD of IRMOF- 13 of the present invention.
- Figure 34 is graphic representation of an InfraRed spectrum for IRMOF-
- Figure 35 is a graphic representation of XRPD of IRMOF- 15 of the present invention.
- Figure 36 is a graphic representation of an InfraRed spectrum for IRMOF- 15 of the present invention.
- Figures 37 - 52 are single crystal X-ray structures of IRMOF- 1 to -16, respectively. Color scheme and drawings conditions: Zn (blue polyhedra), O (red spheres), C (black and gray spheres), Br (green spheres), amino-groups in Fig. 3 (blue spheres). All hydrogen atoms and guests are omitted, and only one orientation of disordered atoms, common to most of the links and in some Zn-O-C units, is shown for clarity;
- Figs. 53A - 53L depict various ligands
- Fig. 54 (Bottom to top): For IRMOF- 1-16, A) the calculated (using cerius 2 version 4.2) percent free volume (yellow), B) crystal densities (light brown), and C) free diameter (green) and fixed diameter (blue), respectively obtained by measuring the diameter of a sphere that would pass through the aperture and another that would fit inside the pores without overlapping with framework atoms; and
- Fig. 55 (A) Thermogravimetrogram for IRMOF-6 including its (B) gas and organic vapor isotherms, and (C) its voluminous uptake of methane gas. The stability of two of the most open IRMOFs (12 and 14) is shown by their (D) X-ray powder diffraction patterns before and after evacuation of guests trapped in the pores. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
- the present invention is predicated upon the unexpected and fortuitous discovery that an extremely stable (with or without the presence of guest molecules within the pores of the framework) and highly (substantially permanently) porous isoreticular metal-organic framework having a topology similar to that shown in Figure
- the links in Figure 1 may be formed, even when utilizing linkers other than benzenedicarboxylate.
- the links in Figure 1 are single, unsubstituted benzene rings.
- the benzene ring of the dicarboxylate may be substituted with a functional group and/or the link may comprise a plurality of benzene rings (forming a horizontal line, a vertical line, or both, ie. the plurality of rings may be as tall as desired and/or as fat as desired), while retaining a stable network with very high porosity and substantially no undesirable interpenetration.
- the present invention discloses the first series of tailored porous materials.
- ⁇ o-reticular Metal-Organic Frameworks are important avenues toward consistently and efficiently (with a high yield) rendering stable, substantially permanently porous materials having a predetermined characterization.
- "Reticular” is an adjective defined in Random House Webster Unabridged Dictionary as "having the form of a net; netlike.” Isoreticular can thus be defined as: having the same network topology.
- MOFs are formed by a combination of metal cations and polydentate organic linkers.
- the incorporation of organic linkers as an integral part into the framework is of great advantage due to the ability to apply all the well-established organic chemistry knowledge to functionalize the linker.
- the present invention shows that it is possible to design porous materials, "IRMOFs,” with tailored pores sizes and functionality/ies, an unprecedented achievement to date.
- the starting building blocks have the relevant attributes necessary to assemble into the skeleton of the desired structure, (b) the synthesis be adaptable to using derivatives of those building blocks to produce structures with the same skeleton but different functionalities and dimensions, and importantly, (c) the products should be highly crystalline to allow the full characterization of their atomic connectivity by X-ray diffraction techniques.
- MOF-5 The most notable example of a truly porous metal-organic frameworks (MOF) is MOF-5 in which octahedral Zn-O-C clusters are linked by benzene struts to reticulate into a primitive cubic structure (Fig. 1).
- the exceptional rigidity and high porosity of MOF-5 led to its use as a target in studies aimed at overcoming the three challenges outlined immediately hereinabove and also to developing the next phase of this chemistry, namely, functionalization of the pores and systematic variation of their size-aspects that are highly sought after in solid-state chemistry and only recently pursued in crystalline zeolite research. See C.W. Jones, K. Tsuji and M.E. Davis, Nature 393, 52 (1998).
- a specific metal salt and a linear ditopic carboxylate were dissolved in a predefined solvent.
- the mixture can either be left at room temperature to crystallize, and/or if necessary or desired, a diluted base is added or allowed to diffuse into the mixture to initiate the reaction, and/or transferred to a closed vessel and heated to a predetermined, precise temperature.
- the selected conditions are ideal to form the cluster M 4 O(CO 2 ) 6 (also called a secondary building unit (SBU)).
- SBU secondary building unit
- the SBU in the case of IRMOFs occupy the corners of the cube, and ditopic linkers link them.
- the resultant dimension, pore size and free volume are related to linkers: Expanded structure results from expanding the linker to a series of linear benzene rings, and reducing the pore volume is generated by introducing functional groups on the benzene rings (those pointing toward the inner cavities).
- An isoreticular metal-organic framework according to the present invention consists essentially of a plurality of secondary building units (SBUs), each of the plurality of SBUs comprising an M 4 O(CO 2 ) 6 cluster.
- a compound links adjacent SBUs, the linking compound comprising a linear ditopic carboxylate having at least one phenyl group and at least one functional group X attached to at least one phenyl group.
- the IRMOF formed has a substantially permanent porosity and is very stable, with or without the presence of guest molecules.
- M in the SBU is a metal cation of a metal selected from the group consisting of beryllium, zinc, cadmium, mercury, and any of the transition metals (in the periodic table, scandium through copper, yttrium through silver, lanthanum through gold, and all known elements from actinium on).
- X may be any suitable functional group as necessary and/or desired. In the preferred embodiment, X is selected from the group enumerated hereinabove.
- a method of forming an isoreticular metal-organic framework comprises the step of dissolving at least one metal salt and at least one linear ditopic carboxylate in a solvent to form a solution.
- the solvent may be any suitable solvent, however, in the preferred embodiment, the solvent is any nitrogen containing solvent having a boiling point of less than about 250°C.
- the solution is then crystallized to form the targeted IRMOF.
- the metal salt is formed from a metal cation and an anion, the metal cation being a cation of a metal selected from the group consisting of beryllium, zinc, cadmium, mercury, and any of the transition metals.
- the anion is selected from the group consisting of F, C ⁇ , Br “ , V, CIO “ , ClO 2 “ , ClO 3 ' , ClO 4 ⁇ OH ⁇ NO 3 " , NO 2 ⁇ SO 4 2' , SO 3 2" , PO 4 3” , CO 3 2' , and PF 6 " and organic counter ions such as acetate CH 3 CO 2 2 ⁇ triphlates CF 3 SO 3 " .
- the linear ditopic carboxylate/carboxylic acid has at least one phenyl group.
- at least one functional group X is attached to the at least one phenyl group.
- X is as defined hereinabove.
- the crystallizing step is carried out by: leaving the solution at room temperature; adding a diluted base to the solution to initiate the crystallization; diffusing a diluted base into the solution to initiate the crystallization; and/or transferring the solution to a closed vessel and heating to a predetermined temperature.
- the method of the present invention has advantageously formed very high yields (about 93%) of pure IRMOF either without any base at all, or by addition (not diffusion) of base into the solution.
- the linking compounds/ligands possessing multi- and/or poly-dentate functional groups may or may not bring with them one or more corresponding counter cations, such as, for example, H + , Li + , Na + , K + , Mg 2+ , Ca 2+ , Sr 2+ , ammonium ion, alkylsubstituted ammonium ions, and arylsubstituted ammonium ions, or one or more counter anions, such as, for example, F “ , Cl “ , Br “ , I “ , CIO “ , ClO 2 “, ClO 3 “ , ClO 4 " , OH “ , NO 3 " , NO 2 " , SO 4 2” , SO 3 2 ⁇ PO 4 3” , CO 3 2” , and PF 6 " and organic counter ions such as acetate CH 3 CO 2 2" , triphlates CF 3 SO 3 " .
- the crystalline microporous materials of the present invention such as,
- the metal ions may be in the form of a metal salt formed from the metal ions with anions, such as, for example, F “ , Cl “ , Br “ , I “ , CIO “ , ClO 2 ⁇ ClO 3 “ , ClO 4 “ , OH “ , HCO 2 ⁇ NO 3 ⁇ NO 2 " , SO 4 2” , SO 3 2 ⁇ PO 4 3” , CO 3 2" , B 4 O 7 2” and PF 6 " and organic counter ions such as acetate CH 3 CO 2 2" , triphlates CF 3 SO 3 " .
- anions such as, for example, F “ , Cl “ , Br “ , I “ , CIO “ , ClO 2 ⁇ ClO 3 “ , ClO 4 “ , OH “ , HCO 2 ⁇ NO 3 ⁇ NO 2 " , SO 4 2” , SO 3 2 ⁇ PO 4 3” , CO 3 2" , B 4 O 7 2” and PF 6 " and organic
- IRMOF-1 1,4-benzenedicarboxylate
- IRMOF-2-16 including the non-interpenetrating structures of BPDC, HPDC, PDC, and TPDC.
- the solvent used to synthesize the IRMOFs be N,N'-diethylformamide (DEF) or combined with other solvents such as alcohols and the like.
- IRMOFs may also be made using any formamide derivatives, eg. N, N'-R 2 formamide (R may be an alkane, alkene, and the like) as a predominant solvent or mixed.
- the present invention shows that expansion of the pores is also contemplated as being within the purview of the present invention. This is illustrated by the structures of IRMOF-8 to 16 (Figs. 8 to 16), in which progressively longer links have been successfully employed.
- IRMOF-6 has an aperture (van der Waals dimension of 5.9 A) (Nan der Waals radius of C (1 JO A) was employed in determination of distance parameters; Bondi, A. J. Phys. Chem. 68, 441 (1964)) considered to be suitable for methane uptake, the present inventors sought to examine its viability in methane storage.
- IRMOF-6 It was necessary first to study IRMOF-6 using thermal gravimetric and gas so ⁇ tion techniques to show that its framework has the high porosity and rigidity needed to allow maximum uptake of methane.
- the chloroform exchanged IRMOF-6, Zn 4 O(R 6 -BDC) 3 -(CHCl 3 ) 7 was heated gradually to 800°C under inert atmosphere.
- a large and sha ⁇ weight loss of 50% of the original sample was observed below 100°C, which was attributed to liberation of all chloroform guests from the pores (Calcd: 49%) (Fig. 55 A).
- the evacuated framework has a stability range of 100 to 400 °C as evidenced by the fact that no additional weight loss was observed at those temperatures, after which the framework eventually decomposes.
- IRMOF-6 was found to be identical to that of the as-synthesized form, indicating the architectural stability of the evacuated framework.
- increments of nitrogen gas were introduced into the chamber containing the evacuated framework, at 78 K, and the resulting weight changes after each addition were recorded and plotted (Fig. 55B). This revealed a reversible type I isotherm behavior characteristic of a microporous material.
- the evacuated sample was also exposed to different organic vapors (CH 2 C1 2 , C 6 H 6 , CC1 4 and C 6 H 12 ) to also give type I reversible isotherms (Fig. 55B), and pore volumes that converged to the same values (0.57 to 0.60 cmVcm 3 ) for all sorbents, further confirmation of the homogeneity of the pores. See S.J. Gregg and K.S.W., Adso ⁇ tion Surface Area and Porosity. Academic Press, London, UK, 2nd Ed
- Methane uptake was also evaluated by testing IRMOF- 1 and IRMOF-2 under the same conditions where their uptake was found to be lower (135 and 120 cm 3 /cm 3 ) than that of IRMOF-6 ⁇ a significant difference that may be attributable to the hydrophobic nature of H 4 C 2 units in IRMOF-6.
- IRMOF-6 IRMOF-6 ⁇ a significant difference that may be attributable to the hydrophobic nature of H 4 C 2 units in IRMOF-6.
- functionalizing the pores with larger hydrocarbons as illustrated in IRMOF-4, 5, and 7, may indeed result in even higher capacities.
- the present invention provides a unique approach that succeeds in the assembly of pre-designed rigid skeletal backbone structure and in imparting functionality and metric variation onto its pores, ultimately leading to functional materials capable of high uptake of gases and organic vapors.
- the intrinsic value of this design approach lies in the ability to control and direct the outcome of molecular assembly of extended networks.
- Method 1 l,4-benzenedicarboxylicacid, H 2 BDC, (0.070 g, 0.42 mmol) and zinc nitrate hexahydrate, Zn(NO 3 ) 2 » 6H 2 O, (0.250 g, 0.84 mmol) were dissolved in lOmL dimethylformamide, DMF. Then, 0.10 ml of hydrogen peroxide, H 2 O 2 , (30% aqueous) was added, followed by the addition of 0.10 mL of 50 times diluted dimethylamine (DMA) (40% aqueous) in DMF. The resultant mixture was diluted again 10 times with DMF. After several days ( ⁇ 7- 10 days), a pure phase IRMOF- 1 was formed.
- DMA dimethylamine
- the ZnO 4 tetrahedra are indicated in pu ⁇ le.
- the frameworks interconnect to form a 3-D stable, porous crystalline structure.
- FT-IR (KBr, 3500-400 cm “1 ): 3455 (br), 2982 (m), 2940 (w), 2874(w), 1668 (vs), 1647 (s), 1622 (s), 1556(w), 1485(m), 1449 (s), 1387 (vs), 1260 (m), 1214 (m), 1118 (w), 1042 (w), 827 (w), 776 (w), 741 (w), 665 (w), 542(w).
- IRMOF-3 Preparation of IRMOF-3:
- the vessel was sealed and heated at a constant rate 2°C/min to 105°C for 20 h and then cooled to room temperature at a constant rate of 1 ° C/min.
- the resultant product, IRMOF-3 (90%) was filtered and washed with DEF/ethanol mixture (3 x 5mL).
- IRMOF-3 is insoluble in water and all common organic solvents such as ethanol, acetonitrile, tetrahydrofuran, chloroform, dichloromethane, acetone, N,N'-dimethyIformamide, and N,N'-diethylformamide.
- Infra-Red spectra for IRMOF-3 ( Figure 5): FT-IR for IRMOF-3 (KBr, 3500-400 cm “1 ): Infrared spectra characteristic peaks 3455 (br), 3338 (br), 2976 (m), 2936 (w), 2879 (w), 1673 (vs), 1571 (s), 1495 (w),
- the nitrogen so ⁇ tion at 78K was monitored by introducing different increments of nitrogen gas to the sample chamber.
- the nitrogen so ⁇ tion isotherm is a Type I isotherm and fully reversible, characteristic of a microporous material ( ⁇ 2.0 nm).
- the plateau was reached at relatively low pressure with no additional uptake at relatively medium pressures (near condensation pressure P/P 0 ⁇ 0.5), confirming the homogeneity of the pores and the absence of any meso ⁇ orosity or macroporosity.
- the evacuated sample was also exposed to different organic vapors such as dichloromethane CH 2 C1 2 , benzene C 6 H 6 , carbon tetrachloride CC1 4 and cyclohexane C 6 H* 2 .
- All the resultant isotherms were Type I and reversible as shown in Figure 10.
- the data are summarized in Table 1, and they indicate that, regardless of the sorbed guest, the pore volumes converge to the same values (0.52-0.59 cm 3 /cm 3 ): final proof of the homogeneity of the pores.
- the resultant cubic IRMOF-3 crystals were collected and fully characterized.
- the crystallographic parameters and a picture of the framework are summarized in Figure 3.
- the elemental analysis confirms the composition as discussed above, and the Infrared spectrum confirms that the carboxylates are fully deprotenated.
- the overlap of the observed and simulated XRPD confirms the purity of the sample.
- Diethylformamide molecules occupied the void spaces in the porous structure of IRMOF-3.
- the DEF guest molecules can be removed from the pores under extended vacuum or by heating the sample as shown in Figure 6.
- the DEF guest molecules can also be fully exchanged with a volatile molecule, such as chloroform, as proven by the data above.
- IRMOF-3 maintains its structure and mainly its porosity upon removing the guest molecules
- so ⁇ tion studies were carried out on the fully evacuated IRMOF-3.
- the isotherm is a type I isotherm characteristic of a microporous material (Nitrogen so ⁇ tion isotherm is a universal and powerful tool to characterize porous material).
- the data summarized in Table 1 prove that IRMOF-3 has homogeneous porosity and is able to sorb different guest molecules. It is believed that the stability of the framework may primarily be due to the stability of the M 4 O(CO 2 ) 6 cluster (secondary building unit).
- IRMOF-4 An exact amount of 2,5-propyl-benzenedicaroxylic acid, ([OC 3 H 7 ] 2 BDCH 2 ) (0.032 g, 0.111 mmol), and zinc nitrate tetrahydrate, Zn(NO 3 ) 2 -4H 2 O, (0.126 g, 0.48 mmol), were dissolved in 10ml diethylformamide, DEF, placed in a Parr Teflon-lined stainless steel vessel (23 mL). The vessel was sealed and heated at a constant rate (2 ° C/min) to 95°C for 36 h and then cooled to room temperature at a rate of 1 °C/min. The resultant sample was filtered and washed with DEF (3 x 5mL) yielding IRMOF-4.
- Zn 4 O([C 2 H 4 ]BDC) 3 »(DEF) x (IRMOF-6) : cyclobutene 1,4- benzenedicarboxylic acid, H 2 BDC[C 2 H 4 ], (0.045 g, 0.20 mmol) and zinc nitrate tetrahydrate, Zn(NO 3 ) 2 *4H 2 O, (0.156 g, 0.60 mmol) were dissolved in 12mL diethylformamide, DEF and placed in a Parr Teflon-lined stainless steel vessel (23 mL).
- the vessel was sealed and heated at a constant rate (2°C/min) to 105°C for 20 h and then cooled to room temperature at a rate of 1 ° C/min.
- the resultant sample (92%), IRMOF-2, was filtered and washed with DEF (3 x 5mL). It is insoluble in water and all common organic solvents such as ethanol, acetonitrile, tetrahydrofuran, chloroform, dichloromethane, acetone, N,N'-dimethylformamide, and N,N'- diethy 1 formamide .
- Phase purity of the bulk product was confirmed by comparison of the observed X-ray powder diffraction (XRPD) pattern, shown in Figure 12a. and the calculated X-ray powder diffraction pattern, shown in Figure 12b. simulated from the single-crystal structure data of IRMOF-2, Zn 4 O([C 2 H 4 ]BDC) 3 -(DEF) x .
- XRPD X-ray powder diffraction
- the nitrogen so ⁇ tion at 78K was monitored by introducing different increments of nitrogen gas to the sample chamber.
- the so ⁇ tion isotherm is a Type I isotherm and fully reversible, characteristic of a microporous material ( ⁇ 2.0nm).
- the plateau was reached at relatively low pressure with no additional uptake at relatively medium pressures (near condensation pressure P/P 0 ⁇ 0.5), confirming the homogeneity of the pores, and the absence of meso ⁇ ores and macropores.
- the evacuated sample was also exposed to different organic vapors (CH 2 C1 2 , C 6 H 6 , CC1 4 and C 6 H 12 ) and all the isotherms were Type I and reversible.
- the data are summarized in Table 2, and they show that the pore volume converge to the same values (0.57-0.60 cm 3 /cm 3 ), proving the homogeneity of the pores.
- the resultant IRMOF-6 cubic crystals were collected and fully characterized.
- the crystallographic parameters and a representative picture of the framework are summarized in Figure 11.
- the elemental analysis confirms the composition as shown above, the Infrared confirms that the carboxylates are fully deprotenated.
- the overlap of the observed and simulated XRPD confirms the purity of the sample.
- IRMOF-6 Diethylformamide molecules occupied the void spaces in the porous structure of IRMOF-6.
- the DEF guest molecules can be removed from the pores under extended vacuum or by heating the sample as shown in Figure 14.
- the DEF guest molecules can also be fully exchanged with a volatile, molecule such as chloroform as proven by the data above.
- a volatile, molecule such as chloroform
- IRMOF-6 maintains its structure and mainly its porosity upon removing the guest molecules so ⁇ tion studies were carried out on the fully evacuated IRMOF-6.
- the isotherm is a type I isotherm characteristic of a microporous material.
- Table 2 prove that IRMOF-6 has homogeneous porous and able to sorb different guests molecules.
- Zn 4 O(2,4NDC) 3 -(DEF) x (IRMOF-7) : An exact amount of 2,4 naphthalene dicarboxylic acid, (2,4 H2NDC) (0.015 g, 0.072 mmol), and zinc nitrate tetrahydrate, Zn(NO 3 ) 2 '4H 2 O, (0.0.53 g, 0.20 mmol), were dissolved in 5mL diethylformamide, DEF, and placed in a Parr Teflon-lined stainless steel vessel (23 mL).
- IRMOF-7 is insoluble in water and all common organic solvents such as ethanol, acetonitrile, tetrahydrofuran, chloroform, dichloromethane, acetone, N,N'-dimethylformamide, and N,N'-diethylformamide.
- IRMOF-8 is insoluble in water and all common organic solvents such as ethanol, acetonitrile, tetrahydrofuran, chloroform, dichloromethane, acetone, N,N'-dimethylformamide, and N,N'-diethylformamide.
- the observed X-ray powder diffraction pattern is shown in Figure 20.
- Method 2 A mixture of N,N' dimethylformamide and benzene DMF/2-C 3 H 8 OH : 4/4 ml containing 4, 4 ' biphenyl dicarboxylic acid, H 2 BPDC, (0.015 g, 0.062 mmol) and zinc nitrate tetrahydrate, Zn(NO 3 ) 2 -4H 2 O, (0.130 g, 0.50 mmol) was placed in a Parr Teflon-lined stainless vessel (23 mL). The vessel was sealed and heated to 85 °C for 24 h at a rate of 2.0 °C/min and cooled to room temperature at a rate of 2.0 °C/min.
- IRMOF-9 The as-synthesized IRMOF-9 is insoluble in water and all common organic solvents such as ethanol, acetonitrile, tetrahydrofuran, chloroform, dichloromethane, acetone, N,N'- dimethylformamide, and N,N'-diethylformamide.
- the observed X-ray powder diffraction pattern is shown in Figure 22a, and the simulated pattern from the single X-Ray data is shown in Figure 22b.
- IRMOF-9 The as-synthesized IRMOF-9 is insoluble in water and all common organic solvents such as ethanol, acetonitrile, tetrahydrofuran, chloroform, dichloromethane, acetone, N,N'-dimethylformamide, and N,N'-diethylformamide.
- the observed X-ray powder diffraction pattern is shown in Figure 22a. and the simulated pattern from the single X-Ray data is shown in Figure 22b.
- the InfraRed spectrum for IRMOF-9 is shown in Figure 23.
- IR for IRMOF-9 FT-IR (KBr, 4000-400 cm-1): 3430 (br), 2936 (w), 1658 (m), 1612 (s), 1541 (w), 1505 (w), 1403 (vs), 1261 (w), 1184 (w), 1108 (w), 1016 (w), 863 (w), 848 (w), 802 (w), 772 (m), 711 (w), 685 (w), 588 (br), 461 (w).
- FT-IR (KBr, 3500-400 cm “1 ): 3455 (br), 2981 (m), 2941 (w), 2880 (w), 1668 (vs), 1607 (vs), 1546 (m), 1398 (s), 1311 (w), 1265 (m), 1220 (m), 1118 (w), 1011 (w), 950 (w), 827 (w), 777 (m), 690 (w), 556 (w).
- FT-IR (KBr, 4000-400 cm “1 ): 3430 (br), 2977 (w), 2941 (w), 2890 (w), 2840 (w), 1647 (vs), 1601 (s), 1548 (m), 1464 (m), 1398 (vs), 1352 (s), 1301 (w), 1270 (w), 1245 (w), 1214 (w), 1113 (w), 1091 (w), 1006 (w), 827 (w), 650 (w).
- Method 2 Zn 4 O(TPDC) 3 -»4H 2 O*»9DMF (IRMOF-11) : A mixture of dimethylformamide and isopropanol DMF/2-C 3 H 8 OH : 6/2 ml containing tetrahydropyrene-2J-dicarboxylic acid, H 2 TPDC (0.015 g, 0.051 mmol), and zinc nitrate tetrahydrate, Zn(NO 3 ) 2 »4H 2 O (0.080 g, 0.31 mmol), was placed in a Parr Teflon-lined stainless vessel (23 mL).
- the vessel was sealed and heated to 85 °C for 24 h at a rate of 2.0 °C/min and cooled to room temperature at a rate of 2.0 °C/min.
- the resultant product rectangular, pale yellow crystals, was filtered, washed with a
- IRMOF- 11 is insoluble in water and all common organic solvents such as ethanol, acetonitrile, tetrahydrofuran, chloroform, dichloromethane, acetone, N,N'-dimethylformamide, and N,N'-diethylformamide.
- Phase purity of the bulk products was confirmed by comparison of the observed X-ray powder diffraction pattern shown in Figure 28a. and the calculated X-ray powder diffraction pattern shown in Figure 28b simulated from the single-crystal structure data of IRMOF- 11.
- the mixture was exposed to diluted triethylamine solution.
- the as-synthesized IRMOF-12 is insoluble in water and all common organic solvents such as ethanol, acetonitrile, tetrahydrofuran, chloroform, dichloromethane, acetone, N,N'-dimethylformamide, and N,N'-diethylformamide.
- the observed X-ray powder diffraction pattern is shown in Figure 25a, and the pattern simulated from the single X-Ray data is shown in Figure 25b. Comparison of these two patterns confirms the purity of the as-synthesized IRMOF-12.
- Thermogravimetric analysis of IRMOF-12 A crystalline sample (16.527 mg) was heated from 30 °C to 900 °C at constant rate (5.0 °C/min); two separate weight-loss steps were observed. The first weight loss step (38.1 %) at 250 °C corresponds to the removal of (4H 2 O + 9DMF) and the second one (41.8 %) to the decomposition of the framework. A pseudo-plateau was observed between 250°C - 400°C corresponding to the stability of IRMOF-6 up to 400 °C. The resultant IRMOF-12 crystals were fully characterized as discussed above. The crystallographic parameters and a representative picture of the framework are summarized in Figure 24. The elemental analysis confirms the composition as shown above, the Infrared confirms that the carboxylates are fully deprotonated. The overlap of the observed and simulated XRPD confirms the purity of the sample. Preparation of IRMOF-13:
- IRMOF-13 The as-synthesized IRMOF-13 is insoluble in water and all common organic solvents such as ethanol, acetonitrile, tetrahydrofuran, chloroform, dichloromethane, acetone,
- Infra-Red spectra for IRMOF-13 ( Figure 34): FT-IR for IRMOF-13 (KBr, 4000-400 cm “1 ): 3445 (br), 2977 (w), 2936 (w), 2880 (w), 1648 (s), 1612 (s), 1581 (s), 1464 (s), 1393 (vs), 1312 (w), 1261 (m), 1209 (w), 1108 (w), 914 (w), 823 (w), 777 (w), 746 (w), 711 (w), 670 (w), 553 (w).
- Thermogravimetric analysis for IRMOF-13 A crystalline sample
- Method 2 Zn 4 O(PDC) 3 4H 2 O 1/2CHP lOchlorobenzne (IRMOF- 14): A mixture of dimethylformamide and isopropanol DMF/2-C 3 H 8 OH : 6/lml containing pyrene-dicarboxylic acid, H 2 PDC (0.014 g, 0.048 mmol), and zinc nitrate tetrahydrate, Zn(NO 3 ) 2 -4H 2 O (0.080 g, 0.31 mmol), was placed in a Parr Teflon- lined stainless vessel (23 mL).
- the vessel was sealed and heated to 85 °C for 24 h at a rate of 2.0 °C/min and cooled to room temperature at a rate of 2.0 °C/min.
- the filtrate solution from six vessels (35 mL) was diluted with CHP (l-cyclohexyl-2- pyrrolidinone) (15.0 mL).
- the final solution was divided equally, transferred into five vials, and exposed to diluted triethylamine.
- Thermogravimetric analysis of IRMOF-14 A crystalline sample (12.000 mg) was heated from 30 °C to 800°C at 10.0 °C/min; two separate weight- loss steps were observed. The first weight loss (52.4 %) step at 250 °C is attributed to the removal of (4H 2 O + 1/2CHP + 1 Ochlorobenzne) and the second one (34.9 %) to the framework decomposition. A pseudo plateau was observed between 250 - 300 °C indicating the stability of IRMOF-14 up to 300°C.
- IRMOF-14 crystals after two weeks, were collected and fully characterized.
- the crystallographic parameters and a representative picture of the framework are summarized in Figure 30.
- the elemental analysis confirms the composition as shown above, the Infrared confirms that the carboxylates are fully deprotenated.
- the overlap of the observed and simulated XRPD confirms the purity of the sample.
- Preparation of IRMOF- 15 Zn 4 O(TPDC) 3 « (DEF) X (IRMOF- 15) : Exact amounts of te ⁇ henyldicarboxylic acid, H2TPDC ( 0.002g, 0.0063mmol), and zinc nitrate hexahydrate, Zn(NO3)2.
- FT-IR for IRMOF-15 (KBr, 4000-400 cm “1 ): 3451 (br), 2978 (w), 2939 (w), 2877 (w), 1667 (s), 1607 (s), 1545 (w), 1404 (vs), 1393 (vs), 1114 (w), 780 (w).
- the resultant IRMOF-15 clear cubic crystals were collected and characterized.
Abstract
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Also Published As
Publication number | Publication date |
---|---|
ES2269761T3 (en) | 2007-04-01 |
CA2446020A1 (en) | 2002-11-07 |
DE60213579D1 (en) | 2006-09-14 |
DE60213579T2 (en) | 2007-08-09 |
EP1383775A1 (en) | 2004-01-28 |
WO2002088148B1 (en) | 2003-02-13 |
US20030004364A1 (en) | 2003-01-02 |
ATE334992T1 (en) | 2006-08-15 |
US6930193B2 (en) | 2005-08-16 |
JP2005506305A (en) | 2005-03-03 |
US7196210B2 (en) | 2007-03-27 |
US20050192175A1 (en) | 2005-09-01 |
EP1383775B1 (en) | 2006-08-02 |
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