Improvements to solid granular catalysts, process for their preparation
US4956322A · kind A · utility
5Cited by
5References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1988 |
| Grant date | Sep 11, 1990 |
| Priority date | — |
| Expiry date | Oct 7, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J33/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a solid granular catalyst subject to degradation by exposure to humidity and/or oxygen, wherein each granule of the catalyst is coated with a continuous and removable protective film of a material that is impermeable to gases and moisture and inert to the constituents of the catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.