06335305 is referenced by 42 patents and cites 6 patents.

A catalyst for purifying an exhaust gas includes a support and a noble metal loaded on the support. The support includes a mixture containing a porous oxide and a composite oxide. The composite oxide is expressed by the following formula:

(Al

2

O

3

)

a

(CeO

2

)

b

(ZrO

2

)

1−b

in which the values “a” and “b” are molar ratios and the value “a” falls in a range of from 0.4 to 2.5 and the value “b” falls in a range of from 0.2 to 0.7. The support includes a particle having a particle diameter of 5 &mgr;m or more in an amount of 30% by volume or more. With the thus arranged support, even when the catalyst is subjected to such a severe durability test that it is heated at 1,000° C. for 10 to 20 hours, it exhibits a high purifying activity, and its coating layer is inhibited from cracking or coming off.

Title
Catalyst for purifying exhaust gas
Application Number
9/547347
Publication Number
6335305 (B1)
Application Date
April 11, 2000
Publication Date
January 1, 2002
Inventor
Hideo Sobukawa
Aichi
US
Akira Morikawa
Aichi
US
Tadashi Suzuki
Aichi
US
Agent
Oblon Spivak McClelland Maier & Neustadt P C
US
Assignee
Kabushiki Kaisha Toyota Chuo Kenkyusho
US
IPC
B01J 23/00
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