CA2280909A1 - Neutral-aged hydrophobic silica gels with reduced surface area - Google Patents

Neutral-aged hydrophobic silica gels with reduced surface area Download PDF

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Publication number
CA2280909A1
CA2280909A1 CA002280909A CA2280909A CA2280909A1 CA 2280909 A1 CA2280909 A1 CA 2280909A1 CA 002280909 A CA002280909 A CA 002280909A CA 2280909 A CA2280909 A CA 2280909A CA 2280909 A1 CA2280909 A1 CA 2280909A1
Authority
CA
Canada
Prior art keywords
silica
hydrophobic silica
surface area
silica hydrogel
neutral
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002280909A
Other languages
French (fr)
Other versions
CA2280909C (en
Inventor
Gary T. Burns
Qin Deng
James R. Hahn
Clifford C. Reese
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dow Silicones Corp
Original Assignee
Dow Corning Corporation
Gary T. Burns
Qin Deng
James R. Hahn
Clifford C. Reese
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dow Corning Corporation, Gary T. Burns, Qin Deng, James R. Hahn, Clifford C. Reese filed Critical Dow Corning Corporation
Publication of CA2280909A1 publication Critical patent/CA2280909A1/en
Application granted granted Critical
Publication of CA2280909C publication Critical patent/CA2280909C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
    • C01B33/157—After-treatment of gels
    • C01B33/159—Coating or hydrophobisation
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/28—Compounds of silicon
    • C09C1/30—Silicic acid
    • C09C1/3081—Treatment with organo-silicon compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/16—Preparation of silica xerogels
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/12—Surface area
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/14—Pore volume
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/16—Pore diameter
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/22—Rheological behaviour as dispersion, e.g. viscosity, sedimentation stability
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/90—Other properties not specified above
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2991—Coated
    • Y10T428/2993—Silicic or refractory material containing [e.g., tungsten oxide, glass, cement, etc.]
    • Y10T428/2995—Silane, siloxane or silicone coating

Abstract

The present invention is neutral-aged hydrophobic silica gels having a reduced surface area and a method for their preparation. The method comprises three steps, where in the first step a mixture comprising a silica hydrosol and colloidal silica is contacted with a strong mineral acid at a pH less than about 1 to form a silica hydrogel having incorporated therein colloidal silica. In the second step the silica hydrogel is aged at a pH within a range of about pH 3.5 to pH 8. In the third step the silica hydrogel is contacted with an organosilicon compound in the presence of a catalytic amount of a strong acid to effect hydrophobing of the silica hydrogel to form a hydrophobic silica hydrogel having a surface area within a range of about 100 m2/g to 450 m2/g in the dry state. In a preferred method the hydrophobic silica hydrogel is further contacted with a sufficient quantity of a water-immiscible organic solvent to convert the hydrophobic silica hydrogel into a hydrophobic silica organogel.
CA002280909A 1997-02-24 1998-02-18 Neutral-aged hydrophobic silica gels with reduced surface area Expired - Lifetime CA2280909C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US80509797A 1997-02-24 1997-02-24
US08/805,097 1997-02-24
PCT/US1998/003311 WO1998037014A1 (en) 1997-02-24 1998-02-18 Neutral-aged hydrophobic silica gels with reduced surface area

Publications (2)

Publication Number Publication Date
CA2280909A1 true CA2280909A1 (en) 1998-08-27
CA2280909C CA2280909C (en) 2007-11-13

Family

ID=25190665

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002280909A Expired - Lifetime CA2280909C (en) 1997-02-24 1998-02-18 Neutral-aged hydrophobic silica gels with reduced surface area

Country Status (11)

Country Link
US (1) US6107351A (en)
EP (1) EP0963342B1 (en)
JP (1) JP3394048B2 (en)
KR (1) KR100517445B1 (en)
CN (1) CN1248220A (en)
AU (1) AU6178498A (en)
BR (1) BR9807718A (en)
CA (1) CA2280909C (en)
DE (1) DE69813191T2 (en)
TW (1) TW467867B (en)
WO (1) WO1998037014A1 (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19648798C2 (en) * 1996-11-26 1998-11-19 Hoechst Ag Process for the production of organically modified aerogels by surface modification of the aqueous gel (without prior solvent exchange) and subsequent drying
US6051672A (en) * 1998-08-24 2000-04-18 Dow Corning Corporation Method for making hydrophobic non-aggregated colloidal silica
US6972301B2 (en) * 2002-06-06 2005-12-06 Sasol North America Inc. Process for producing organically modified metal oxides and products thereof
US8435474B2 (en) 2006-09-15 2013-05-07 Cabot Corporation Surface-treated metal oxide particles
US8455165B2 (en) 2006-09-15 2013-06-04 Cabot Corporation Cyclic-treated metal oxide
US20080070146A1 (en) 2006-09-15 2008-03-20 Cabot Corporation Hydrophobic-treated metal oxide
US8202502B2 (en) 2006-09-15 2012-06-19 Cabot Corporation Method of preparing hydrophobic silica
DE102007023103A1 (en) * 2007-05-16 2008-11-20 Evonik Degussa Gmbh Silica dispersion and method for coating substrates
EP2110414A1 (en) * 2008-04-18 2009-10-21 Nanoresins AG Surface modified silicon dioxide particles
US10577250B2 (en) 2011-05-13 2020-03-03 Merck Patent Gmbh Process for producing of inorganic particulate material
ES2657822T3 (en) * 2011-05-13 2018-03-07 Merck Patent Gmbh Process to produce a particulate inorganic material
AU2018269421B2 (en) * 2017-05-15 2022-10-06 Nouryon Chemicals International B.V. Composition and method for water and gas shut-off in subterranean formations
WO2018213050A1 (en) * 2017-05-15 2018-11-22 Saudi Arabian Oil Company Composition and method for water and gas shut-off in subterranean formations
CN108863612A (en) * 2018-09-12 2018-11-23 蚌埠市瑞丰现代农业种植专业合作社 A kind of high yield green rice special complex fertilizer preparation method
JP2022530184A (en) * 2019-03-25 2022-06-28 ビーエーエスエフ ソシエタス・ヨーロピア A new method for hydrophobizing porous silica
US11230661B2 (en) 2019-09-05 2022-01-25 Saudi Arabian Oil Company Propping open hydraulic fractures
CN110589839B (en) * 2019-09-23 2021-02-23 东莞创利科技发展有限公司 Silicon dioxide reinforcing agent and preparation method and application thereof
CN111252773B (en) * 2020-01-16 2023-01-06 刘文治 Method for producing sodium-free silica sol by resource treatment of incineration siliceous residues
US11802232B2 (en) 2021-03-10 2023-10-31 Saudi Arabian Oil Company Polymer-nanofiller hydrogels
CN113388080B (en) * 2021-06-21 2022-10-28 台州泰捷化工科技有限公司 Medical silica gel antiskid area
US11572761B1 (en) 2021-12-14 2023-02-07 Saudi Arabian Oil Company Rigless method for selective zonal isolation in subterranean formations using colloidal silica
US11708521B2 (en) 2021-12-14 2023-07-25 Saudi Arabian Oil Company Rigless method for selective zonal isolation in subterranean formations using polymer gels

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2441422A (en) * 1945-02-10 1948-05-11 Gen Electric Organosilicon-silica sols, gels, and aerogels
US3015645A (en) * 1954-10-06 1962-01-02 Dow Corning Silica powders
GB783868A (en) * 1954-10-06 1957-10-02 Midland Silicones Ltd A process of preparing hydrophobic organo-silicon powders
US2802850A (en) * 1954-11-01 1957-08-13 Gen Electric Hydrophobic silicas
US2892797A (en) * 1956-02-17 1959-06-30 Du Pont Process for modifying the properties of a silica sol and product thereof
US3122520A (en) * 1959-10-05 1964-02-25 Dow Corning Method of making silicone rubber fillers
US3024126A (en) * 1960-06-15 1962-03-06 Dow Corning Method of treating reinforcing silica
BE633180A (en) * 1962-06-04
US4006175A (en) * 1969-12-18 1977-02-01 Dynamit Nobel Aktiengesellschaft Porous silicic acid and its production
DE1963439A1 (en) * 1969-12-18 1971-06-24 Dynamit Nobel Ag Process for the production of porous silica
US3810843A (en) * 1971-05-28 1974-05-14 Gen Electric Silicone-silica compositions
US3979546A (en) * 1971-12-30 1976-09-07 Sws Silicones Corporation Alkoxysiloxanol modified surfaces
DE2435860B2 (en) * 1974-07-25 1977-10-20 Deutsche Gold- U. Silber-Scheideanstalt, Vorm. Roessler, 6000 Frankfurt PROCESS FOR THE PRODUCTION OF FINE PARTICLE HYDROPHOBIC SILICACIDS OR SILICATES
US4316807A (en) * 1978-04-03 1982-02-23 W. R. Grace & Co. Viscosifying agent
US4208316A (en) * 1978-06-29 1980-06-17 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler Hydrophobic precipitated silicic acid and compositions containing same
DE3005137A1 (en) * 1980-02-12 1981-08-20 Degussa Ag, 6000 Frankfurt CONTAINING PELLETIC SILICONE, METHOD FOR THE PRODUCTION THEREOF, AND ELASTOMERIC LIQUID MEASURES CONTAINING THE CONTAINING PELLETIC SILICONE
US4950502A (en) * 1987-09-10 1990-08-21 Dow Corning Corporation Method of hydrophobing silica
US4985477A (en) * 1988-05-13 1991-01-15 Dow Corning Corporation Method of producing treated silica filler for silicone rubber
US5565142A (en) * 1992-04-01 1996-10-15 Deshpande; Ravindra Preparation of high porosity xerogels by chemical surface modification.
DE4422912A1 (en) * 1994-06-30 1996-01-11 Hoechst Ag Xerogels, processes for their manufacture and their use
US5807501A (en) * 1997-02-20 1998-09-15 Dow Corning Corporation Neutral-aged hydrophobic organosilicate-modified silica gels
US5789514A (en) * 1997-02-24 1998-08-04 Dow Corning Corporation Method for preparing hydrophobic silica gels

Also Published As

Publication number Publication date
JP3394048B2 (en) 2003-04-07
EP0963342A1 (en) 1999-12-15
DE69813191D1 (en) 2003-05-15
BR9807718A (en) 2000-02-15
KR100517445B1 (en) 2005-09-29
DE69813191T2 (en) 2004-02-05
WO1998037014A1 (en) 1998-08-27
CA2280909C (en) 2007-11-13
AU6178498A (en) 1998-09-09
KR20000075613A (en) 2000-12-26
US6107351A (en) 2000-08-22
CN1248220A (en) 2000-03-22
TW467867B (en) 2001-12-11
JP2000512974A (en) 2000-10-03
EP0963342B1 (en) 2003-04-09

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