A homogeneous ceria-based mixed-metal oxide, useful as a catalyst support, a co-catalyst and/or a getter has a relatively large surface area per weight, typically exceeding 150 m2/g, a structure of nanocrystallites having diameters of less than 4 nm, and including pores larger than the nanocrystallites...http://www.google.com/patents/US20070093382?utm_source=gb-gplus-sharePatent US20070093382 - Ceria-based mixed-metal oxide structure, including method of making and use