触媒担体及び触媒 - Toyota Central R & D Labs.

Title:

触媒担体及び触媒

Document Type and Number:

Japanese Patent JP4737149

Kind Code:

B2

Abstract:

To obtain an NOx occlusion-reduction type catalyst which can control sulfur poisoning and has high durability by using a catalyst carrier in which the features of each metal element constituting a compound oxide are developed at the maximum.

The catalyst support which has pores in a meso-pore region and contains tetragonal zirconia and in which at least parts of ZrO2and TiO2are converted into a ZrO2-TiO2solid solution by burning a precipitate coprecipitated from a solution of acid salts of Al, Zr, and Ti at 650°C or above is prepared. Since the catalyst support is burned at a high temperature, the decrease of the specific surface area when used as a catalyst is controlled.

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Inventors:

Haruo Imagawa
Akihiko Suda
Toshiyuki Tanaka
Naoki Takahashi
Miho Hatanaka
Akira Morikawa
Shinichi Matsunaga
Hideo Sofukawa

Application Number:

JP2007144110A

Publication Date:

July 27, 2011

Filing Date:

May 30, 2007

Export Citation:

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Assignee:

Toyota Central R & D Labs.

International Classes:

B01J21/06; B01D53/94; B01J23/58; B01J29/03; B01J32/00; B01J35/10; B01J37/03; B01J37/04; B01J37/08; F01N3/10

Domestic Patent References:

JP2000327329A
JP2001170500A
JP2000107600A
JP58210993A

Attorney, Agent or Firm:

Hiroshi Okawa

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