Enrichment of nitrogen isotopes by induced isomerization of isocyanides
US4202741A · kind A · utility
3Cited by
10References
10Claims
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Key dates
| Filing date | Apr 3, 1978 |
| Grant date | May 13, 1980 |
| Priority date | — |
| Expiry date | Apr 3, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D59/34
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The essentially monochromatic infrared radiation from a laser device with a frequency coincident with a vibrational absorption band of an isocyanide, for example, methyl isocyanide (CH.sub.3 NC), leads to isomerization to the corresponding nitrile, in this example, acetonitrile (CH.sub.3 CN). This isomerization is accomplished isotopically selectively for vibrational bands which exhibit an isotope shift. As a consequence, the enrichment and separation of nitrogen or carbon isotopes may be accomplished.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.