Removal of metal comtaminants from catalysts using buffered oxalic acid
US4522928A · kind A · utility
18Cited by
9References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 1984 |
| Grant date | Jun 11, 1985 |
| Priority date | — |
| Expiry date | May 14, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S502/516
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for removing metal contaminants from a hydroconversion catalyst, said catalyst containing at least one metal from Groups VIB, VIIB or VIII supported on a refractory inorganic oxide. The process comprises contacting the contaminated catalyst with a buffered oxalic acid solution wherein contaminant is removed without dissolving the support.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.