Mixed metal oxide ammoxidation catalysts

Patent metadata

Field	Value
Publication number	US-9844769-B2
Application number	US-201414572977-A
Country	US
Kind code	B2
Filing date	Dec 17, 2014
Priority date	Dec 17, 2014
Publication date	Dec 19, 2017
Grant date	Dec 19, 2017

Abstract

A catalytic composition useful for the conversion of an olefin selected from the group consisting of propylene, isobutylene or mixtures thereof, to acrylonitrile, methacrylonitrile, and mixtures thereof. The catalytic composition comprises a complex of metal oxides comprising rubidium, bismuth, cerium, molybdenum, iron and other promoters, with a desirable composition.

First claim

The claimed invention is:

1. A catalytic composition comprising a complex of metal oxides wherein the relative ratios of the listed elements in said catalyst are represented by the following formula:
Mo m Bi a Fe b A c D d E e F f G g Ce h Ni i Co j Mn k Mg l Rb n O x

wherein
A is at least one element selected from the group consisting of lithium, sodium, potassium, and cesium; and
D is at least one element selected from the group consisting of zinc, calcium, strontium, cadmium and barium;
E is at least one element selected from the group consisting of chromium, tungsten, boron, aluminum, gallium, indium, phosphorus, arsenic, antimony, vanadium and tellurium;
F is at least one element selected from the group consisting of lanthanum, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium thulium, ytterbium, lutetium, scandium, yttrium, titanium, zirconium, hafnium, niobium, tantalum, aluminum, gallium, indium, thallium, silicon, germanium and lead;
G is at least one element selected from the group consisting of silver, gold, ruthenium, rhodium, palladium, osmium, iridium, platinum and mercury; and

a, b, c, d, e, f, g, h, i, j, k, l, m, n and x are, respectively, the atomic ratios of bismuth (Bi), iron (Fe), A, D, E, F, G, cerium (Ce), nickel (Ni), cobalt (Co), manganese (Mn), magnesium (Mg), rubidium (Rb) and oxygen (O), relative to “m” atoms of molybdenum (Mo),
wherein
a is greater than 0, but less than or equal to 7,
b is 0.1 to 7,
c is greater than 0, but less than or equal to 5,
d is 0.1 to 12,
e is 0 to 5,
f is 0 to 5,
g is 0 to 0.2,
h is 0.01 to 5,
i is 0.1 to 12,
j is 0.1 to 12,
k is 0.1 to 12,
l is 0.1 to 12,
m is 10 to 15,
n is greater than 0, but less than or equal to 5,
x is the number of oxygen atoms required to satisfy the valence requirements of the other component elements present; and

wherein
z=d+i+j+k+l;
0.3≦( a+h )/ z;

1.2≦ h/b≦ 5;

0< a/h< 1.5;
0.2< i /( i+j+k+ 1); and
0<( n+c )/( a+h )≦0.2.

2. The catalyst composition of claim 1 , wherein 0.02<(n+c)/(a+h)≦0.2.

3. The catalyst composition of claim 1 , wherein 0.04<(n+c)/(a+h)≦0.15.

4. The catalyst composition of claim 1 , wherein 0.06≦(n+c)/(a+h)≦0.12.

5. The catalyst composition of claim 1 , wherein 0.45<a/h<1.5.

6. The catalyst composition of claim 1 , wherein 0.8≦a/h≦1.2.

Assignees

• Ineos Europe Ag

Inventors

• Brazdil James F
• Toft Mark A

Classifications

• C07C47/22

  Acryaldehyde; Methacryaldehyde · CPC title

• C07C51/252

  of propene, butenes, acrolein or methacrolein · CPC title

• C07C45/35

  in propene or isobutene · CPC title

• B01J2523/842

  Iron · CPC title

• C07C253/26

  containing carbon-to-carbon multiple bonds, e.g. unsaturated aldehydes · CPC title