Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Silicon containing or process of making
Reexamination Certificate
2006-05-11
2010-10-26
Mayes, Melvin C (Department: 1793)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Silicon containing or process of making
C977S754000, C117S903000
Reexamination Certificate
active
07820585
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 dendrimer10, (b) reducing the first metal ion coordinated to the dendrimer to precipitate a cluster6aof the first metal in the dendrimer, (c) further coordinating a second metal ion8to the dendrimer, and (d) drying and firing the solution containing this dendrimer on a metal oxide support9, 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 cluster6aof the first metal is held by the oxide of the second metal8on the metal oxide support9.
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Finnegan Henderson Farabow Garrett & Dunner LLP
Han Sheng
Mayes Melvin C
Toyota Jidosha & Kabushiki Kaisha
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