Formation of cyanate compounds
US4174377A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 1978 |
| Grant date | Nov 13, 1979 |
| Priority date | — |
| Expiry date | May 25, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01C3/14
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The use of a reaction mixture of carbon monoxide, an oxide of nitrogen such as nitric oxide, and a source of hydrogen when passed over a hydrogenation catalyst produces cyanate compounds, e.g., ammonium cyanate and isocyanic acid. The reaction conditions chosen determine the relative amounts of the various cyanate compounds to be formed. When the formation of ammonium cyanate is desired, the addition of ammonia to the reaction mixture reduces the amount of nitric oxide reactant necessary, while enhancing the efficiency of ammonium cyanate production. When a palladium or iridium catalyst is used, the production of isocyanic acid is favored.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.