Catalytic process for the production of acrylonitrile
AssigneeSumitomo Chemical Company, Limited
InventorsTatsuo Shiraishi, Shinkichi Shimizu, Hiroshi Ichihashi
Life of this patent
Estimating the term…
Abstract
In the production of acrylonitrile by a vapor phase reaction of propylene, ammonia and oxygen at an elevated temperature, a process which comprises contacting propylene, ammonia and oxygen with a catalyst composition comprising a catalyst system of the formula: Tl.sub.a P.sub.b Mo.sub.c Fe.sub.d Bi.sub.e X.sub.f O.sub.g wherein X represents one or more of the metals, Ni, Mg and Co, and a, b, c, d, e, f and g represent respectively the relative number of atoms of each component; provided that when c is 12, a is 2 or less, but not 0; b is 0 to 5; d is 0.1 to 5; e is 0.1 to 5; f is 2 to 15; and the value of g depends on the number of the other atoms and is usually from 38.3 to 81.5.
Claims29
A process for producing acrylonitrile by the vapor phase reaction of propylene, ammonia and gaseous oxygen at a temperature from about 300.degree. to about 520.degree. C., which comprises contacting propylene, ammonia and gaseous oxygen with a catalyst composition comprising a catalyst system of the formula:
- Tl.sub.a P.sub.b Mo.sub.c Fe.sub.d Bi.sub.e X.sub.f O.sub.g wherein X is Ni, Mg or Co or mixtures thereof and a, b, c, d, e, f and g represent respectively, the number of atoms and c is 12, a is 2 or less, but not 0;
- b is 0 to 5;
- d is 0.1 to 5;
- e is 0.1 to 5;
- f is 2 to 15;
- and g is from 38.3 to 81.5.
A process for producing acrylonitrile by the vapor phase reaction of propylene, ammonia and gaseous oxygen at a temperature of about 300.degree. to about 520.degree. C, which comprises contacting propylene, ammonia and gaseous oxygen with a catalyst composition consisting essentially of a catalyst system of formula:
- Tl.sub.a P.sub.b Mo.sub.c Fe.sub.d Bi.sub.e X.sub.f O.sub.g wherein X is Ni, Mg or Co or mixtures thereof and a, b, c, d, e, f and g represent respectively, the number of atoms and c is 12, a is 2 or less, but not 0;
- b is 0 to 5;
- d is 0.1 to 5;
- e is 0.1 to 5;
- f is 2 to 15 and g is from 38.3 to 81.5, said catalyst formed by admixing a slurry of an aqueous solution of a molybdate with a thallium salt, an iron salt, a bismuth salt, a phosphorous compound and one or more of a magnesium salt, a cobalt salt and a nickel salt with a carrier material, evaporating the composition so formed to dryness to form a cake, calcining the cake at an elevated temperature and cooling the calcined cake.
Dependencies are inferred from the claim text.