Urea rejuvenation of catalysts
US4645750A · kind A · utility
4Cited by
9References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 24, 1985 |
| Grant date | Feb 24, 1987 |
| Priority date | — |
| Expiry date | Oct 24, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J38/66
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A spent catalyst comprising a zeolite base and an active metal such as a Group VIII noble metal is rejuvenated by contacting the catalyst with an aqueous solution containing urea.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.