Process for forming a homogeneous oxide solid phase of catalytically active material

US5427993A · kind A · utility

Assignee

• The Regents of the University of California · US

Inventors

• Dale L. Perry · Hercules, US
• Richard E. Russo · Walnut Creek, US
• Xianglei Mao · Castro Valley, US

Key dates

• Filing date: Aug 30, 1993
• Grant date: Jun 27, 1995
• Expiry date: Aug 30, 2013

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J37/0238
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process is disclosed for forming a homogeneous oxide solid phase reaction product of catalytically active material comprising one or more alkali metals, one or more alkaline earth metals, and one or more Group VIII transition metals. The process comprises reacting together one or more alkali metal oxides and/or salts, one or more alkaline earth metal oxides and/or salts, one or more Group VIII transition metal oxides and/or salts, capable of forming a catalytically active reaction product, in the optional presence of an additional source of oxygen, using a laser beam to ablate from a target such metal compound reactants in the form of a vapor in a deposition chamber, resulting in the deposition, on a heated substrate in the chamber, of the desired oxide phase reaction product. The resulting product may be formed in variable, but reproducible, stoichiometric ratios. The homogeneous oxide solid phase product is useful as a catalyst, and can be produced in many physical forms, including thin films, particulate forms, coatings on catalyst support structures, and coatings on structures used in reaction apparatus in which the reaction product of the invention will serve as a catalyst.