Process for removal of arsine impurities from gases containing arsine and hydrogen sulfide
US4593148A · kind A · utility
40Cited by
9References
25Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 25, 1985 |
| Grant date | Jun 3, 1986 |
| Priority date | — |
| Expiry date | Mar 25, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C7/148
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Arsines are removed from gaseous stream, e.g., hydrocarbon or inert gas streams, comprising arsine impurities and also hydrogen sulfide, by contacting these gas streams with a sorbent material comprising copper oxide and zinc oxide. Preferably, the sorbent material is prepared by coprecipitating of hydroxides of copper and zinc and subsequent heating the hydroxides so as to convert the hydroxides to CuO and ZnO. Optionally, aluminum oxide is also present in the sorbent material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.