Process for preparation of methacrylic acid with regeneration of catalyst
US4942258A · kind A · utility
13Cited by
6References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 12, 1988 |
| Grant date | Jul 17, 1990 |
| Priority date | — |
| Expiry date | Apr 12, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/584
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Process is disclosed for regeneration of a solid methacrylic acid catalyst wherein said catalyst is decoked in the presence of an oxygen-containing gas at an initial temperature no greater than 650.degree. F. and then by increasing the temperature incrementally to complete the regeneration at a temperature of from about 650.degree. F. to 800.degree. F.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.