Patent ID: 6693059
Filing Date: 2004-02-17
Classification: B01J,C07C

Abstract:
A process for preparing a catalyst comprising:(A) admixing metal compounds, at least one of which is an oxygen-containing compound, and at least one solvent to form a solution, (B) removing said at least one solvent from the solution to obtain a catalyst precursor, and (C) calcining said catalyst precursor at a temperature of from 350Â° C. to 850Â° C. under an inert atmosphere to form a catalyst having the formula WaVbXxYyOn wherein a, b, x and y are molar fractions of W, V, X and Y, respectively, based on the total amount of W, V, X and Y, and n is the molar proportion of oxygen as determined by the oxidation state of W, V, X and Y, wherein a, b, x and y satisfy the following relationships 0.250.0030.0030.003wherein X is at least one element selected from the group consisting of Te, Bi, Sb and Se, wherein Y comprises Mo.