Exhaust gas purifying catalyst

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United States of America Patent

PATENT NO 10022705
APP PUB NO 20170232425A1
SERIAL NO

15504430

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
HONDA MOTOR CO LTDTOKYO JAPAN TOKYO METROPOLIS
MITSUI MINING & SMELTING CO LTD1-11-1 OSAKI SHINAGAWA-KU TOKYO 1418584

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Endo, Takeshi Saitama, JP 213 2590
Horimura, Hiroyuki Saitama, JP 40 442
Houshito, Ohki Saitama, JP 11 37
Iimuro, Akihiro Saitama, JP 3 37
Kimura, Toshiaki Saitama, JP 41 654
Nakahara, Yunosuke Saitama, JP 36 95
Oshima, Ryoichi Saitama, JP 3 32
Yamaguchi, Takumi Saitama, JP 94 1708

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