Burned gas purifying catalyst
An exhaust gas emission control catalyst includes an under catalyst layer containing at least one of barium and lanthanum and an over catalyst layer containing an agent for absorbing water in a gas, at least one of the under catalyst layer and over catalyst layer containing catalytic metal.
Mazda Motor Corporation
F F B F B F B B B F Y B Y
F01N F01N B01D F01N B01J F01N B01D B01J B01J F01N Y02T B01D Y02A
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Hirosuke Akihide Hiroshi Takahiro Kenichi Kenji Hideharu Makoto Hiroshi
Sumida Takami Yamada Kurokawa Yamamoto Okamoto Iwakuni Kyogoku Murakami