Catalyst for exhaust gas purification, and method for manufacturing same
US9012350B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 22, 2012 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Oct 22, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2255/2092
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The herein disclosed exhaust gas purification catalyst is an exhaust gas purification catalyst that is provided with a porous carrier 40 and palladium 50 supported on this porous carrier 40. The porous carrier 40 is provided with an alumina carrier 42 formed of alumina and with a CZ carrier 44 formed of a ceria-zirconia complex oxide. Barium is added to both the alumina carrier 42 and the CZ carrier 44. Here, an amount of barium added to the alumina carrier 42 is an amount that corresponds to 10 mass % to 15 mass % relative to a total mass of the alumina carrier 42 excluding the barium, and an amount of barium added to the CZ carrier 44 is an amount that corresponds to 5 mass % to 10 mass % relative to a total mass of the CZ carrier 44 excluding the barium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.