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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9421528 B1

PDFFull Text
Date of Patent:
Aug. 23, 2016

Filed:

Feb. 24, 2014

Exhaust gas purifying catalyst and exhaust gas purification method using same

Applicant:

Umicore Shokubai Japan Co., Ltd., Tokoname-shi, Aichi, JP;

Inventors:

Yosuke Goto, Tokoname, JP;

Naohiro Kato, Tokoname, JP;

Yuta Akasaka, Tokoname, JP;

Shota Kawashima, Tokoname, JP;

Assignee:

UMICORE SHOKUBAI JAPAN CO., LTD., Aichi, JP;

Attorney:

Buchanan Ingersoll & Rooney PC

Primary Examiner:

Cam N Nguyen

Int. Cl.
CPC ...
B01D 53/56 (2006.01); B01D 53/94 (2006.01); B01J 21/00 (2006.01); B01J 21/04 (2006.01); B01J 23/00 (2006.01); B01J 23/02 (2006.01); B01J 23/08 (2006.01); B01J 23/10 (2006.01); B01J 23/40 (2006.01); B01J 23/42 (2006.01); B01J 23/44 (2006.01); B01J 23/56 (2006.01); B01J 29/74 (2006.01); B01J 37/02 (2006.01); B01J 35/00 (2006.01); B01J 29/70 (2006.01); B01J 23/63 (2006.01);
U.S. Cl.
CPC ...
B01J 29/7415 (2013.01); B01D 53/944 (2013.01); B01J 29/7007 (2013.01); B01J 35/0006 (2013.01); B01J 37/0244 (2013.01); B01J 37/0246 (2013.01); B01D 2255/1021 (2013.01); B01D 2255/1023 (2013.01); B01D 2255/2063 (2013.01); B01D 2255/2065 (2013.01); B01D 2255/2066 (2013.01); B01D 2255/2092 (2013.01); B01D 2255/20707 (2013.01); B01D 2255/20715 (2013.01); B01D 2255/30 (2013.01); B01D 2255/502 (2013.01); B01D 2255/9207 (2013.01); B01D 2257/502 (2013.01); B01D 2258/012 (2013.01); B01J 23/44 (2013.01); B01J 23/63 (2013.01); F01N 2610/05 (2013.01); F01N 2900/1621 (2013.01);
Abstract

A catalyst that is not only capable of efficiently treating CO even at a low exhaust gas temperature, but also capable of exerting favorable CO purification efficiency in a low-temperature exhaust gas even in a case of being exposed for a long time to an engine exhaust gas that is a high temperature and contains HC, CO, NOx, water vapor and the like; and an exhaust gas treatment technique are described. The catalyst for purifying exhaust gas contains: a noble metal; an oxide containing as a base material A at least two kinds of elements selected from the group consisting of aluminum, zirconium and titanium; and an oxide containing as a base material B at least one kind of element selected from the group consisting of silicon, cerium, praseodymium and lanthanum; in which the base material A and the base material B satisfy a specific formula.

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