Ict Co., Ltd.

International Catalyst Technology, Inc.

Umicore Shokubai Japan Co., Ltd.

Umicore Shokubai USA Inc.

Takuji Nakane

Makoto Horiuchi

Takeshi Matsumoto

Takao Kobayashi

Takahiro Uno

Masao Hori

Tatsuya Yoshikawa

Akihisa Okumura

Naohiro Kato

Atsushi Fukumoto

The present invention provides a catalyst which can sufficiently remove nitrogen oxides in an exhaust gas. The catalyst for removing nitrogen oxides to achieve an object of the present invention includes a monolithic support which is coated with a lower layer containing a catalytic component A comprising cerium oxide and an upper layer containing a catalytic component B comprising at least one kind of metal selected from a group consisting of copper, manganese, iron, cobalt and nickel or a compound thereof, and zeolite.

Catalyst for removing nitrogen oxides and method for removing nitrogen oxides using the same

A catalyst which purges a diesel engine exhaust gas of HC, CO, and SOF and reduces the emission of particulates as well and a method for the production thereof are provided. The catalyst for purifying a diesel engine exhaust gas has deposited on a refractory three-dimensional structure a catalyst component comprising silica-alumina supporting at least one noble metal selected from the group consisting of platinum, palladium, and rhodium and zeolite. This catalyst is produced by adding a noble metal component into a slurry of silica-alumina thereby inducing chemical adsorption, then adding zeolite to the resultant mixture thereby obtaining a mixed slurry of a noble metal-supporting silica-alumina and zeolite, dipping a refractory three-dimensional structure in the slurry thereby inducing deposition of the catalyst component, and subsequently calcining the resultant composite.

Catalyst for purifying diesel engine exhaust gas and method for production thereof

A catalyst which efficiently removes particulate matter, SOF, sulfate, and SOOT and the like from the exhaust gas from such an internal combustion engine as a diesel engine without inducing a rise in the back pressure of the engine is provided. The catalyst for the purification of the exhaust gas of an internal combustion engine is formed by using an open flow honeycomb containing in the channel walls thereof such pores as possess an average diameter in the range of 10-40 &#x3bc;m.

Catalyst for purifying exhaust emission from internal combustion engine, method for preparation thereof and method for purifying exhaust emission from internal combustion engine

An exhaust gas purifying catalyst contains copper oxide, ZSM-5 and/or zeolite &#x3b2;, and an oxide of magnesium and/or calcium is further added thereto. A process for purifying an exhaust gas using such a catalyst is also included. By using the catalyst, NOx in an exhaust gas containing much oxygen such as exhaust gas of diesel engines can be efficiently removed and oxidation of SOunder high-temperature conditions can be suppressed.

Exhaust gas purifying catalyst and process for purifying exhaust gas

An exhaust gas purifying catalyst has a catalytic component including copper, ZSM-5, and &#x3b2; zeolite. This exhaust gas purifying catalyst reduces nitrogen oxides even from low temperature range and exhibits durability even under a thermal load of high temperature.

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Himeji, Japan

Takuji Nakane