Mitsui Minings & Melting Co., Ltd.

Honda Motor Co., Ltd.

Ohki Houshito

Yunosuke Nakahara

Yuki Nagao

Takeshi Endo

Toshiaki Kimura

Yasunori Imada

Ryoichi Oshima

Tomohiro Ikeda

Takahiro Sato

Hiroyuki Horimura

Makoto Ogawa

Takashi Wakabayashi

Masato Machida

Hironori Iwakura

Shinichi Tosa

Toshiharu Moriya

Masanori Hashimoto

Syouji Inose

Koji Ueno

Akihiro Iimuro

Takahiko Sakaue

Akira Abe

Akihiro Nara

Shinji Aoki

Noriaki Iwata

Akiko Iwasa

Shumpei Suzuki

Takumi Yamaguchi

Provided are an exhaust gas purifying catalyst structure that inhibits foil elongation and improves structural durability and a production method therefor. The exhaust gas purifying catalyst structure has a metal support configured by using an mantle and a metal foil provided in the mantle and forming an exhaust gas flow path, and a catalyst layer provided on a surface forming the flow path of the metal foil, wherein the catalyst layer contains a noble metal, an OSC material containing cerium and a rare earth element other than cerium (non-Ce rare earth element), and alumina, and a content of the non-Ce rare earth element with respect to 100% by mass of the catalyst layer is 2.52% by mass or more and 4.62% by mass or less in terms of an oxide.

Exhaust gas cleaning catalyst structure and production method therefor

The exhaust gas purification catalyst carrier of the invention includes a modified aluminum borate which contains aluminum borate and at least one addition element selected from the group consisting of a rare earth element and an alkaline earth metal and which has an electronegativity of 2.732 or lower.

Carrier for exhaust gas purification catalyst

To reduce an OSC material, while maintaining necessary OSC capacity; and to improve heat resistance and reactivity of a precious metal. Proposed is an exhaust gas purifying catalyst which comprises a first catalyst layer that is formed on the surface of a substrate that is formed of a ceramic or a metal, and a second catalyst layer that is formed on the upper side of the first catalyst layer. The first catalyst layer comprises a precious metal, an OSC material and an alumina, and the OSC material and the alumina are comprised at a mass ratio of OSC material:alumina=1:7 to 1:3. The second catalyst layer comprises a precious metal, an OSC material and an alumina, and the OSC material and the alumina are comprised at a mass ratio of OSC material:alumina=1:1 to 10:0.

Exhaust gas purifying catalyst

Provided is a carrier for an exhaust gas purification catalyst containing aluminum borate particles having a peak (pore peak) exhibiting the highest intensity in a void volume diameter range of from 20 nm to 100 nm in a logarithmic differential void volume distribution measured using a mercury intrusion porosimeter, in order to provide a new catalyst support capable of effectively suppressing a decrease in catalytic performance caused by sulfur (S) component contained in the exhaust gas, in the case of supporting Pd as a catalytically active component.

Carrier for exhaust gas purification catalyst, and exhaust gas purification catalyst

An internal combustion engine exhaust gas purifying catalyst carrier has a core body formed of a CeO&#x2014;ZrOsolid solution or a CeO&#x2014;ZrO&#x2014;LaOsolid solution, and CeOsupported on the surface of the core body, wherein the core body has a CeOcontent of 5 to 35 mass % and an LaOcontent of 0 to 10 mass %, on the basis of the mass of the carrier, and the amount of CeOsupported on the core body is 5 to 17 mass %, on the basis of the mass of the carrier.

Carrier for internal-combustion engine exhaust gas purification catalyst

In an exhaust gas purification catalyst system for use in an automobile including an exhaust gas purification catalyst product disposed in both a front section and a rear section, the exhaust gas purification catalyst product of the front section has a layered catalyst including a lower layer which contains aluminum borate.

Catalyst system for exhaust gas purification and method for exhaust gas purification

Provided is a catalyst composition using other metals different from noble metals as a catalytic activity component and which has an excellent catalytic activity even after a thermal duration treatment. Provided are an exhaust gas purifying catalyst composition which includes ceria-zirconia particles with a feature in that a peak arising from (111) plane is divided into two peak tops in an XRD pattern and in which a transition metal including at least one of Cu, Cr, Fe, Mn, Co, Ni, and Ag is supported on the ceria-zirconia particles, and a catalyst using the exhaust gas purifying catalyst composition.

Exhaust gas purifying catalyst composition and exhaust gas purifying catalyst

Provided is a novel catalyst structure capable of maintaining gas diffusivity to a deep part of a catalyst layer even under condition of a high gas flow rate. Proposed is a catalyst structure, which has a porous apatite catalyst layer containing an oxide (hereinafter referred to as 'apatite') whose crystalline structure belongs to an apatite type, and in which, in logarithmic differentiation void volume distribution measured by a mercury intrusion porosimeter, a peak top is present within a void volume diameter range of 100 nm to 1000 nm.

Catalyst structure for treating exhaust gas

Provided is a novel catalyst carrier for exhaust gas which relates to an OSC material containing a ceria-zirconia composite oxide and is able to enhance the low temperature properties and to exert excellent OSC even at the time of engine start and excellent exhaust gas purification performance. A catalyst carrier for exhaust gas containing a fluorite type ceria-zirconia composite oxide and ceria formed from the fluorite type ceria-zirconia composite oxide by phase separation proposed.

Catalyst carrier for exhaust gas and exhaust gas-cleaning catalyst

Disclosed is an exhaust gas purifying catalyst which includes barium hexaaluminate, and palladium and barium which are supported on barium hexaaluminate, wherein the amount of supported palladium, as reduced to metallic Pd, is 0.2 to 3.5 mass % with respect to the mass of barium hexaaluminate; the amount of supported barium, as reduced to BaO, is 1 to 20 mass % with respect to the mass of barium hexaaluminate; and the ratio by mole of supported barium to supported palladium, Ba/Pd, is (0.5 to 10)/1; an exhaust gas purifying catalyst product which has a catalyst support made of a ceramic or metallic material, and a layer which is formed of the exhaust gas purifying catalyst as a predominant component and which is supported on the catalyst support; and a method for producing the exhaust gas purifying catalyst product.

Exhaust gas purifying catalyst and production method for same

Growing community of inventors

Saitama, Japan

Ohki Houshito