Manufacture of acrylonitrile from propylene, ammonia and oxygen
US4082785A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 1972 |
| Grant date | Apr 4, 1978 |
| Priority date | — |
| Expiry date | Jan 25, 1992 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/52
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A new catalyst is described which is useful in the ammoxidation or oxidation of olefins. It consists of a mixture of oxidation compounds of uranium, tellurium and molybdenum, which may be accompanied by an activator consisting of an oxidation compound of an element selected from groups Ib, IIa, IIb, IIIa, IIIb, IVa, Va, VIb, VIIb and VIII of the periodic system, and is represented by the formula: U.sub.a Te.sub.b Mo.sub.c Me.sub.d X wherein, U is uranium, Te is tellurium, Mo is molybdenum, Me is the activator element, X is the oxygen necessary for saturating the other valences, a is 1, b is 1 to 8, c is 0.1 to 1 and d is 0 to 5. In the use of that catalyst, unsaturated nitriles are prepared by contacting a mixture, in vapor phase, of an olefin, ammonia and oxygen or a gas containing oxygen in the presence of the catalyst; and olefins are converted to oxygen containing compounds or dienes by contacting, in vapor phase, a mixture of the olefin and oxygen in the presence of the catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.