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Stephan Verdier, Olivier Larcher, Emmanuel Rohart, Bernard Pacaud, Hirofumi Takemori, Eisaku Suda: Catalyst compositions for the treatment of vehicular exhaust gases comprise zirconium oxide and cerium oxide, and have a high reducibility and a stable specific surface area. Rhodia Operations, SNR Denton US, April 17, 2012: US08158551 (14 worldwide citation)

Catalyst compositions for the treatment of vehicular exhaust gases are based on zirconium and cerium oxides, have a cerium oxide content of at most 50% by weight, a level of reducibility of at least 95% after calcination in air at 600°, and a specific surface area after calcination for 4 hours at 11 ...


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Hideo Yokoi, Tadatoshi Murota, Kazuhito Fujiwara, Hirofumi Takemori: Composite oxide having oxygen absorbing and desorbing capability and method for preparing the same. Santoku Metal, Darby & Darby, August 31, 1999: US05945370 (12 worldwide citation)

A composite oxide having oxygen absorbing and desorbing capability containing 90 to 100 weight % total of cerium, zirconium, and hafnium based on a total amount of metals contained in the composite oxide, the total amount of cerium, zirconium, and hafnium consisting of 14.0 to 70.5 at % cerium, 29.4 ...


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Stephan Verdier, Olivier Larcher, Emmanuel Rohart, Bernard Pacaud, Hirofumi Takemori, Eisaku Suda: Catalyst compositions for the treatment of vehicular exhaust gases comprise zirconium oxide and cerium oxide, and have a high reducibility and a stable specific surface area. Rhodia Operations, Buchanan Ingersoll & Rooney PC, September 3, 2009: US20090220398-A1

Catalyst compositions for the treatment of vehicular exhaust gases are based on zirconium and cerium oxides, have a cerium oxide content of at most 50% by weight, a level of reducibility of at least 95% after calcination in air at 600°, and a specific surface area after calcination for 4 hours at 11 ...