Title:
酸化ジルコニウムと、セリウム、ランタン及び他の希土類元素の酸化物とを用いた組成物、その調製方法、並びに触媒としての使用
Document Type and Number:
Japanese Patent JP4406359
Kind Code:
B2
Abstract:
The invention concerns a composition based on zirconium and cerium oxides in an atomic ratio Zr/Ce>1, and further comprising lanthanum oxide or an oxide of a rare earth other than cerium and lanthanum. The invention is characterized in that after calcination for 6 hours at 1150 .C it has a specific surface area of not less than 10 m;/g. The composition is obtained by forming a mixture containing a sol of a zirconium compound and cerium, lanthanum, said rare earth compounds, contacting said mixture with a basic compound solution, while heating and calcining the resulting precipitate. The composition can be used as catalyst.
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Inventors:
Catherine Edouin
Application Number:
JP2004516870A
Publication Date:
January 27, 2010
Filing Date:
June 26, 2003
Export Citation:
Assignee:
Rhodia Electronics and Catalysis
International Classes:
B01J23/10; B01D53/94; B01J32/00; C01F17/00; C01G25/00; C01G25/02; B01J21/00
Domestic Patent References:
| JP2000319019A | ||||
| JP10512191A | ||||
| JP2002028488A | ||||
| JP10194742A |
Foreign References:
| EP1052008A1 |
Attorney, Agent or Firm:
Motohiro Kurauchi
Endo Azusa
Takumi Yoshida
Taku Nakajima
Endo Azusa
Takumi Yoshida
Taku Nakajima