GAS PURIFYING CATALYST FOR INTERNAL COMBUSTION ENGINE

摘要

Disclosed is a gas purifying catalyst for an internal combustion engine comprising: a carrier and a catalyst layer formed on the carrier, the catalyst layer including a first catalyst, a second catalyst and a third catalyst. The first catalyst comprises Pd supported in a first support, the first support comprising alumina. The second catalyst comprises Rh supported in a second support, the second support comprising a complex oxide of ceria-zirconia. The third catalyst comprising Pd supported in a third support, the third support comprising a complex oxide of ceria-zirconia.

主权项

1. A gas purifying catalyst for an internal combustion engine, comprising:
a carrier and a catalyst layer formed on the carrier, wherein the catalyst layer includes:
a mixture of a first catalyst including Pd as a first active metal supported in a first support, the first support comprising alumina; a second catalyst including Rh as a second active metal supported in a second support, the second support comprising a complex oxide of ceria-zirconia; and a third catalyst including Pd as a third active metal supported in a third support, the third support comprising a complex oxide of ceria-zirconia,wherein the catalyst layer is a single layer.