Catalyst carrier and catalyst using the same
US7842642B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 22, 2005 |
| Grant date | Nov 30, 2010 |
| Priority date | — |
| Expiry date | Dec 24, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The catalyst carrier in accordance with the present invention is a catalyst carrier comprising a support containing an oxide and an element in group 3A of the periodic table, and a coating part covering at least a part of a surface of the support; wherein the coating part contains an element in group 3A of the periodic table; and wherein the element in group 3A contained in the coating part has a concentration higher than that of the element in group 3A contained in the support. In this case, even when a catalyst in which rhodium is supported by the catalyst carrier is used for a long time in a high temperature environment, the grain growth of rhodium particles can be suppressed, and the catalyst can fully be prevented from lowering its activity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.