Removal of hydrogen arsenide
US4088734A · kind A · utility
3Cited by
1References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1976 |
| Grant date | May 9, 1978 |
| Priority date | — |
| Expiry date | Dec 8, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C7/11
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Process for removing arsenic compounds and particularly arsine from gases containing the same, by treating said gases with a washing solution consisting either of an alkaline aqueous solution, containing a zinc or lead, salt or oxide and/or one or more salts of anthraquinone sulfonic or disulfonic acids, or of a solution in an organic solvent of at least one quinone compound in the presence of an amine or an ethanolamine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.