US 7,943,710 B2 · Multi-metal oxide catalyst and method for producing (meth)acrylic acid by using the same

Abstract

The present invention provides a Mo—Bi—Nb based composite metal oxide (with the proviso that Te is not included); a method for producing (meth)acrylic acid from at least one reactant selected from the group consisting of propylene, propane, isobutylene, t-butyl alcohol and methyl-t-butyl ether, in which a Mo—Bi—Nb based composite metal oxide (with the proviso that Te is not included) is used as a catalyst; and a reactor used for producing (meth)acrylic acid from at least one reactant selected from the group consisting of propylene, propane, isobutylene, t-butyl alcohol and methyl-t-butyl ether, in which a Mo—Bi—Nb based composite metal oxide (with the proviso that Te is not included) is used as a catalyst. Further, the present invention provides a method for producing (meth)acrylic acid from at least one reactant selected from the group consisting of propylene, propane, isobutylene, t-butyl alcohol and methyl-t-butyl ether by using a Mo—Bi—Nb based composite metal oxide as a catalyst, without any additional process of convening (meth)acrolein into (meth)acrylic acid.

Claims3

Dependent claims

An Mo—Bi—Nb based composite metal oxide, which is represented by the following Formula 1:

Moa Bib Nbc Ad Be Cf Dg Eh Fi Oj [Formula 1]
wherein Mo represents molybdenum, Bi represents bismuth, and Nb represents niobium;
A is at least one element selected from the group consisting of W, Sb, As, P, Sn and Pb;
B is at least one element selected from the group consisting of Fe, Zn, Cr, Mn, Cu, Pd, Ag and Ru;
C is at least one element selected from the group consisting of Co, Cd, Ta, Pt and Ni;
D is at least one element selected from the group consisting of Si, Al, Zr, V and Ce;
E is at least one element selected from the group consisting of Se, Ga, Ti, Ge, Rh and Au;
F is at least one element selected from the group consisting of Na, K, Li, Rb, Cs, Ca, Mg, Sr, Ba and MgO;
each of a, b, c, d, e, f, g, h, i, and j represents the atomic ratio of each element;
and
when a=12, b is 0.01 to 20, c is 0.001 to 20, d is 0 to 15, e is 0 to 20, f is 0 to 20, g is 0 to 10, h is 0 to 10, i is 0 to 10, and j is a value defined by the oxidation state of each of the above elements, with the proviso that e, f, and i are not zero.

8 more elements

Dependencies are inferred from the claim text.

Multi-metal oxide catalyst and method for producing (meth)acrylic acid by using the same

Life of this patent

Multi-metal oxide catalyst and method for producing (meth)acrylic acid by using the same

Life of this patent

Abstract

Claims3