Pressure activation of magnesium oxide catalysts
US4418005A · kind A · utility
5Cited by
11References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1982 |
| Grant date | Nov 29, 1983 |
| Priority date | — |
| Expiry date | Jun 28, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C37/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A titanium oxide/magnesium sulfate/magnesium oxide catalyst which is an ortho-selective methylation catalyst can be made to exhibit higher conversion and activity index for phenol methylation by the application of pressure. The pressure can be applied throughout the methylation period or can be applied for a short time at the beginning of the methylation period and then ceased, while higher activity continues. The pressure activation effects are assisted by the presence of phenol, methanol and/or water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.