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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 9186657 B1

PDFFull Text
Date of Patent:
Nov. 17, 2015

Filed:

May. 07, 2013

Exhaust gas purification catalyst suppressing influence of iron compound

Applicant:

Mitsubishi Hitachi Power Systems, Ltd., Yokohama, JP;

Inventors:

Yasuyoshi Kato, Hiroshima, JP;

Naomi Imada, Hiroshima, JP;

Keiichiro Kai, Hiroshima, JP;

Assignee:

Mitsubishi Hitachi Power Systems, Ltd., Kanagawa, JP;

Attorney:

Fay Sharpe LLP

Primary Examiner:

Cam N Nguyen

Int. Cl.
CPC ...
B01D 53/56 (2006.01); B01D 53/86 (2006.01); B01D 53/34 (2006.01); B01J 8/00 (2006.01); C01C 3/00 (2006.01); C01B 21/00 (2006.01); B01J 27/198 (2006.01); B01J 27/188 (2006.01); B01J 27/19 (2006.01); B01J 23/00 (2006.01); B01J 23/02 (2006.01); B01J 23/08 (2006.01); B01J 21/04 (2006.01); B01J 27/199 (2006.01); B01J 21/06 (2006.01); B01J 23/22 (2006.01); B01J 23/28 (2006.01); B01J 23/30 (2006.01); B01J 37/02 (2006.01); B01J 37/28 (2006.01); B01D 53/64 (2006.01); B01J 35/06 (2006.01); B01J 37/04 (2006.01);
U.S. Cl.
CPC ...
B01J 27/199 (2013.01); B01D 53/64 (2013.01); B01D 53/8628 (2013.01); B01D 53/8665 (2013.01); B01J 21/063 (2013.01); B01J 23/22 (2013.01); B01J 23/28 (2013.01); B01J 23/30 (2013.01); B01J 37/0225 (2013.01); B01J 37/28 (2013.01); B01D 2255/20707 (2013.01); B01D 2255/20723 (2013.01); B01D 2255/20769 (2013.01); B01D 2255/20776 (2013.01); B01J 35/06 (2013.01); B01J 37/04 (2013.01);
Abstract

An exhaust gas purification catalyst contains titanium oxide as a main component and an oxide of one element or two or more elements selected from the group consisting of tungsten (W), molybdenum (Mo), and vanadium (V) as an active component, wherein the exhaust gas purification catalyst contains phosphoric acid or a water soluble phosphoric acid compound so that the atomic ratio of phosphorus (P) to a catalytically active component represented by the following formula is more than 0 and 1.0 or less; P/catalytically active component (atomic ratio)=number of moles of P/(number of moles of W+number of moles of Mo+number of moles of V).

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