Preparation of high surface area mixed metal oxides

US4724135A · kind A · utility

Assignee

• The Standard Oil Company · US

Inventors

• Larry M. Cirjak · Burton, US
• Richard P. Schmidt · Plainfield, US

Key dates

• Filing date: Oct 23, 1986
• Grant date: Feb 9, 1988
• Expiry date: Oct 23, 2006

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S423/06
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The process of producing high surface area mixed metal oxides comprising selecting a precursor characterized by the following formula: EQU A.sub.x M.sub.a [M'(CN).sub.c ].sub.b.nH.sub.2 O PA1 x=0-4; PA1 a=0-4; PA1 b=0.1-4; PA1 c=4-8; PA1 n=0-30; PA1 A=alkali, alkaline earth metal, Al, Si or mixtures; PA1 M=rare earth metals, transition metals or mixture thereof; and PA1 M'=transition metal capable of forming a cyanide (e.g. Group VIA-VIII A) or mixture thereof, and heating the precursor at a temperature rate of below 1.degree.C/minute in a controlled atmosphere consisting essentially of O.sub.2 and an inert gas to a temperature sufficient to decompose the precursor and produce the mixed metal oxide.