Metal cluster-carrying metal oxide support and process for production thereof
US7820585B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 11, 2006 |
| Grant date | Oct 26, 2010 |
| Priority date | — |
| Expiry date | May 22, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/754
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention provides a metal cluster-carrying metal oxide support wherein a metal cluster obtained by use of a dendrimer is prevented from migrating to the surface of support and being sintered, and a process for production thereof. The process for producing the metal cluster-carrying metal oxide support of the present invention comprises (a) coordinating a first metal ion to a dendrimer 10, (b) reducing the first metal ion coordinated to the dendrimer to precipitate a cluster 6a of the first metal in the dendrimer, (c) further coordinating a second metal ion 8 to the dendrimer, and (d) drying and firing the solution containing this dendrimer on a metal oxide support 9, wherein the oxide of the second metal is the same as the metal oxide constituting the metal oxide support, or a metal oxide capable of forming a composite oxide with the metal oxide constituting the metal oxide support. In the metal cluster-carrying metal oxide support of the present invention, the cluster 6a of the first metal is held by the oxide of the second metal 8 on the metal oxide support 9.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.