Direct epoxidation process
US7238817B1 · kind B1 · utility
9Cited by
19References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 22, 2006 |
| Grant date | Jul 3, 2007 |
| Priority date | — |
| Expiry date | Feb 22, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D301/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is disclosed for reacting an olefin, hydrogen, and oxygen in a reactor in the presence of a catalyst comprising a transition metal zeolite and a noble metal to produce a reaction mixture comprising an epoxide and acidic byproducts. A portion of the reaction mixture is contacted with an adsorbent so that a treated mixture having a reduced amount of byproducts is produced. The treated mixture is recycled back to the reactor. Including an adsorption step should improve the catalyst productivity and epoxide selectivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.