Toyota Jidosha Kogyo Kabushiki Kaisha

Cataler Industrial Co., Ltd.

Cataler Industrical Co. Ltd.

Hiroo Kinoshita

Yoshihiro Suzuki

Masayasu Sato

Naomi Akasaka

Masanori Ohara

Shoji Saruhashi

A monolithic catalyst, for the purification of exhaust gases from an internal combustion engine, comprising: an inert carrier; a film of alumina and rare earth oxides coated onto the surface of said inert carrier, wherein Ce and La are present in said film at an atomic ratio of Ce/La of 0.05-0.3 and the total content of rare earth oxides in said film is 2-50 wt. %, measured as R.sub.2 O.sub.3, wherein R is an element of the lanthanide series of the Periodic Table; and said film carries a catalyst component containing at least one element of the platinum family.

Monolithic catalyst for exhaust gas purification

Exhaust gas purifying catalyst characterized in that a carrier carries as the catalytic elements, a Pt-family element or elements containing over 50 weight % of Pt and an alkaline metal in proportions of 0.001.about.1 mole per 1 kg of catalyst; or the carrier carries Ce additionally.

Exhaust gas purifying catalyst

A catalyst for purifying exhaust gas composed of a catalyst carrier coated with a metal oxide material containing a spinel metal oxide of the formula: MAl.sub.2 O.sub.4 wherein M is Sr, Mg, Cu, Mn, Mo, Zn, Fe, Co or Ni the metal oxide coated carrier further being coated with rhodium and platinum and/or palladium as catalytically active components. The catalytically active components also can include cerium.

Catalyst for purifying exhaust gas and the process for manufacturing

A catalyst for the purification of exhaust gases, comprising:

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Toyota, Japan

Hiroo Kinoshita