Inventors:
Manhua Lin - Maple Glen PA
Michael William Linsen - North Wales PA
Assignee:
Rohm and Haas Company - Philadelphia PA
International Classification:
B01J 2310
US Classification:
502311, 502304, 502312, 502313, 502315, 502316, 502319, 502321, 502325, 502326, 502333, 502334, 502335, 502336, 502337, 502338, 502339, 502353, 502354, 502355, 502308, 502309, 502322, 502324, 502327, 502332, 502349, 502351, 502350
Abstract:
An improved catalyst including a compound of the formula (I) wherein 0. 25a0. 98, 0. 003m0. 5, 0. 003n0. 5, 0. 003x0. 5 and o is dependent on the oxidation state of the other elements, A is selected from the group consisting of Mo, W, Fe, Nb, Ta, Zr, Ru and mixtures thereof; M is selected from the group consisting of V, Ce, Cr and mixtures thereof; N is selected from the group consisting of Te, Bi, Sb, Se and mixtures thereof; and X is selected from the group consisting of Nb, Ta, W, Ti, Al, Zr, Cr, Mn Fe, Ru, Co, Rh, Ni, Pd, Pt, Sb, Bi, B, In, Ce and mixtures thereof; is prepared by the process 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 the solvent from the solution to obtain a catalyst precursor; and (C) calcining the catlyst under an inert atmosphere, wherein the inert atmosphere is not flowing over the catalyst precursor, to form a catalyst including said compound of the formula (I).