Preparation of high surface area mixed metal oxides
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United States of America Patent
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Feb 9, 1988
Grant Date -
N/A
app pub date -
Oct 23, 1986
filing date -
Oct 23, 1986
priority date (Note) -
Expired
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Abstract
The process of producing high surface area mixed metal oxides comprising selecting a precursor characterized by the following formula: A.sub.x M.sub.a [M'(CN).sub.c ].sub.b.nH.sub.2 O x=0-4; a=0-4; b=0.1-4; c=4-8; n=0-30; A=alkali, alkaline earth metal, Al, Si or mixtures; M=rare earth metals, transition metals or mixture thereof; and 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.
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