Heterogeneous catalyst regeneration
US5798313A · kind A · utility
6Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1996 |
| Grant date | Aug 25, 1998 |
| Priority date | — |
| Expiry date | Dec 20, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/584
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The activity of titanium-containing heterogeneous catalysts such as titania-on-silica which have been used to catalyze olefin epoxidation is effectively restored by heating in the presence of oxygen at a temperature of 700.degree. C. or greater. Epoxide selectivity is enhanced by treatment of the heated catalyst with a silylating agent, even where the used catalyst had been silylated when initially prepared.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.