Process for the epoxidation of olefinic compounds and catalysts used therein
US4937216A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Feb 2, 1989 |
| Grant date | Jun 26, 1990 |
| Priority date | — |
| Expiry date | Feb 2, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D303/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the epoxidation of olefinic compounds comprising reacting said compounds with hydrogen peroxide introduced as such or produced by substances under the reaction conditions, in the presence of synthetic zeolites containing titanium atoms corresponding to the general formula: EQU x TiO.sub.2.(1-x)SiO.sub.2 wherein x is in the range of from about 0.0001 to about 0.04, and optionally, in presence of one or more solvents, at a temperature in the range of from about 0.degree. to about 150.degree. C. and at a pressure of from about 1 to about 100 atm. The synthetic zeolites are treated with alkaline substances before and/or during their use in the reaction, or alternatively the synthetic zeolites are acid neutralized with a compound such as X-Si-(R).sub.3 where X is selected from Cl, Br, I, ##STR1## and an imidazolyl group wherein R is selected from an alkyl, aryl or alkylaryl group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.