Promoted multi-metal oxide catalyst
AssigneeRohm and Haas Company
InventorsSanjay Chaturvedi, Anne Mae Gaffney, Scott Han, Elsie Mae Vickery
Life of this patent
Estimating the term…
Abstract
A catalyst comprising an In promoted mixed metal oxide is useful for the vapor phase oxidation of an alkane, or a mixture of an alkane and an alkene, to an unsaturated carboxylic acid and for the vapor phase ammoxidation of an alkane, or a mixture of an alkane and an alkene, to an unsaturated nitrile.
Claims10
A catalyst comprising a promoted mixed metal oxide having the empirical formula
- MoaVbNcXdZeOf
- wherein
- N is at least one element selected from the group consisting of Te, Sb, Sn, Ge and Bi,
- X is at least one element selected from the group consisting of Nb, Ta, Ti, Al, Zr, Cr, Mn, Fe, Ru, Co, Rh, Ni, Pt, B, Ga, As, Li, Na, K, Rb, Cs, Fr, Be, Mg, Ca, Sr, Ba, Hf, Pb, P, Pm, Eu, Gd, Dy, Ho, Er, Tm, Yb, Lu, La, Sc, Au, Ag, Pd, Ga, Pr, Re, Ir, Nd, Y, Sm, Tb, W, Ce, Cu and Zn, and
- Z is selected from the group consisting of In and Re;
- and
- wherein, when a=1, b=0.01 to 1.0, c=0.01 to 1.0, d=0.01 to 1.0, e=0.001 to 0.1 and f is dependent on the oxidation state of the other elements.
A process for producing an unsaturated carboxylic acid, which comprises subjecting an alkane or a mixture of an alkane and an alkene to a vapor phase catalytic oxidation reaction in the presence of a catalyst containing a promoted mixed metal oxide having the empirical formula
- MoaVbNcXdZeOf
- wherein
- N is at least one element selected from the group consisting of Te, Sb, Sn, Ge and Bi,
- X is at least one element selected from the group consisting of Nb, Ta, Ti, Al, Zr, Cr, Mn, Fe, Ru, Co, Rh, Ni, Pt B, As, Li, Na, K, Rb, Cs, Fr, Be, Mg, Ca, Sr, Ba, Hf, Pb, P, Pm, Eu, Gd, Dy, Ho, Er, Tm, Yb, Lu, La, Sc, Au, Ag, Pd, Ga, Pr, Re, Ir, Nd, Y, Sm, Tb, W, Ce, Cu and Zn, and
- Z is selected from the group consisting of In and Re;
- and
- wherein, when a=1, b=0.01 to 1.0, c=0.01 to 1.0, d=0.01 to 1.0, e=0.001 to 0.1 and f is dependent on the oxidation state of the other elements.
A process for producing an unsaturated nitrile, which comprises subjecting an alkane, or a mixture of an alkane and an alkene, and ammonia to a vapor phase catalytic oxidation reaction in the presence of a catalyst containing a promoted mixed metal oxide having the empirical formula
- MoaVbNcXdZeOf
- wherein
- N is at least one element selected from the group consisting of Te, Sb, Sn, Ge and Bi,
- X is at least one element selected from the group consisting of Nb, Ta, Ti, Al, Zr, Cr, Mn, Fe, Ru, Co, Rh, Ni, Pt, B, As, Li, Na, K, Rb, Cs, Fr, Be, Mg, Ca, Sr, Ba, Hf, Pb, P, Pm, Eu, Gd, Dy, Ho, Er, Tm, Yb, Lu, La, Sc, Au, Ag, Pd, Ga, Pr, Re, Ir, Nd, Y, Sm, Tb, W, Ce, Cu and Zn, and
- Z is selected from the group consisting of In and Re;
- and
- wherein, when a=1, b=0.01 to 1.0, c=0.01 to 1.0, d=0.01 to 1.0, e=0.001 to 1.0 and f is dependent on the oxidation state of the other elements.
A catalyst produced by the process comprising:
- (1) adrnixing compounds of the elements Mo, V, N, X and Z and at least one solvent to form an admixture,
- wherein
- N is at least one element selected from the group consisting of Te, Sb, Sn, Ge and Bi,
- X is at least one element selected from the group consisting of Nb, Ta, Ti, Al, Zr, Cr, Mn, Fe, Ru, Co, Rh, Ni, Pt, B, As, Li, Na, K, Rb, Cs, Fr, Be, Mg, Ca, Sr, Ba, Hf, Pb, P, Pm, Eu, Gd, Dy, Ho, Er, Tm, Yb, Lu, La, Sc, Au, Ag, Pd, Ga, Pr, Re, Ir, Nd, Y, Sm, Tb, W, Ce, Cu and Zn, and
- Z is selected from the group consisting of In and Re;
- and
- wherein the elements Mo, V, N, X and Z are present in such amounts that the atomic ratio of Mo:V:N:X:Z is 1:0.01 to 1.0:0.01 to 1.0:0.01 to 1.0:0.001 to 0.1;
- (2) removing said at least one solvent from the admixture to obtain a catalyst precursor;
- and
- (3) calcining said catalyst precursor.
Dependencies are inferred from the claim text.