Synthesis of hydroxylamine from hydrogen sulfide and nitric oxide
US4115523A · kind A · utility
4Cited by
2References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 7, 1977 |
| Grant date | Sep 19, 1978 |
| Priority date | — |
| Expiry date | Nov 7, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B21/1409
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An improved process is described for producing hydroxylamine, NH.sub.2 OH, a valuable intermediate in the industrial manufacture of nylon-6, in which hydrogen sulfide is reacted with nitric oxide, or mixtures of nitrogen oxides, in aqueous acidic media containing a solid sulfur-resistant catalyst, such as activated carbon, at ambient temperature and pressure and substantially in the absence of elemental oxygen. An important aspect of the invention is that the industrial waste gases, hydrogen sulfide and nitrogen oxide, can be effectively utilized in the process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.