Patent number: 6372908
Abstract: A method of preparing a catalyst having the elements and the proportions indicated by the following empirical formula:
VSbmAaDdOx
where
A is one or more Ti, Sn, where Sn is always present
D is one or more Li, Mg, Ca, Sr, Ba, Co, Fe, Cr, Ga, Ni, Zn, Ge, Nb, Zr, Mo, W, Cu, Te, Ta, Se, Bi, Ce, In, As, B, Al and Mn wherein
m is 0.5 to 10
a is greater than zero to 10
d is zero to 10
x is determined by the oxidation state of the cations present,
comprising making an aqueous slurry of a mixture of source batch materials comprising compounds of said elements to be included in the final catalyst, followed by drying and heat calcining the mixture to an active catalyst, wherein the source batch material for the tin is a solution which comprises SnO2.
Type:
Grant
Filed:
May 9, 2000
Date of Patent:
April 16, 2002
Assignee:
The Standard Oil Company
Inventors:
James Frank Brazdil, Jr., Joseph Peter Bartek