Toyota Jidosha Kabushiki Kaisha

Cambridge Enterprise Limited

Brian Johnson

Mayuko Osaki

Andrew Wheatley

Hirohito Hirata

Naoyuki Hara

Helen Skelton

Muriel Lepage

Masaya Ibe

Atsushi Tanaka

Yoshiaki Inagaki

Maciej Cabaj

[Problem] The present invention provides a NOpurification catalyst which utilizes Ag as one of the catalyst components and exhibits NOpurification performance without adjustment to a special exhaust gas composition, as well as a method of producing the same. [Means for Solution] The present invention provides a nitrogen oxide purification catalyst in which particulates are supported on a metal oxide carrier, wherein the aforementioned particulates consist of Ag and Ni and the aforementioned Ag and Ni are at least partially alloyed. Also provided is a method of producing the aforementioned catalyst, comprising the step of preparing a colloidal suspension in which the ratio of Ag is 10 to 90 at % with respect to the total amount of Ag and Ni.

[object Object]

The present invention relates to a catalyst able to exhibit an NOpurification performance at a low temperature and/or in an oxidizing atmosphere, that is, a nitrogen oxides purification catalyst composed of particles having an average particle size of 0.2 to 100 nm and including gold atoms and iron atoms in a state of close proximity.

The invention relates to a catalyst able to exhibit an NOpurification performance at a low temperature and/or in an oxidizing atmosphere, that is, a nitrogen oxide purification catalyst including gold atoms and nickel atoms in a solid and a state of close proximity.

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Cambridge, United Kingdom

Brian Johnson