High heat-resistant catalyst with a porous ceria support
US5972830A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1995 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | Dec 11, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This catalyst support aims to improve heat resistant and durability by highly dispersing an NO.sub.x storage component. This catalyst support is produced by mixing a solution of a chemical compound including at least one element of alkali metals, alkaline-earth metals, and rare-earth elements with a solution of oxide sol of at least one metal of group IIIb, group IVa, and group IVb in the periodic table to prepare a mixed sol solution, forming the mixed sol solution into gel, and drying and calcining the gel. The obtained catalyst support is amorphous and attains a high specific surface area even when calcined at elevated temperatures, so that the catalyst support is superior in heat resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.