Toyota Jidosha Kabushiki Kaisha

The University of Tokyo

Masaoki Iwasaki

Miho Hatanaka

Masahide Miura

Akira Morikawa

Masaya Ibe

Masaru Ogura

Takahiro Hayashi

Taizo Yoshinaga

Naoki Kumatani

A catalyst for purification of exhaust gas in which Pd-based nanoparticles and ceria nanoparticles are supported on a composite metal oxide support containing alumina, ceria, and zirconia, wherein a molar ratio (Ce/Pd) of Ce and Pd supported on the support is 1 to 8, a proximity α between Pd and Ce is 0.15 to 0.50, wherein the proximity α is determined, based on Pd and Ce distribution maps in an element mapping image of energy dispersive X-ray analysis, by the following formula (1): a Pd dispersity after a heat-resistance test at 1050° C. for 25 hours is 0.8% or more.

Catalyst for purification of exhaust gas and production method thereof

A method for producing iron-supporting chabazite-type zeolite, comprising the following steps in order: mixing iron(II) chloride and chabazite-type zeolite, heat treating under a reducing atmosphere, and a Hydrogen reducing.

Method for producing exhaust gas purification catalyst

Growing community of inventors

Nagakute, Japan

Masaoki Iwasaki