Method for producing styrene and benzene
US3941854A · kind A · utility
1Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1974 |
| Grant date | Mar 2, 1976 |
| Priority date | — |
| Expiry date | Apr 25, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2527/11
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Styrene and benzene are simultaneously produced by heating a mixture of toluene and ethylbenzene in a mole ratio of at least 1:1 to a temperature from about 400.degree. to 900.degree.C at moderate pressures for a period of time up to about 15 seconds, cooling the reaction mixture quickly and recovering the styrene and benzene therefrom. Yields of both products can be improved by the addition of modifying agents such as benzenethiol or by conducting the reaction in the presence of a chromium-containing catalyst supported on an inorganic material which can be promoted by a compound of calcium, magnesium, copper or zinc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.