SEPARATION OF NITROGEN AND OXYGEN ISOTOPES BY EXCHANGE OF NITRIC OXIDE WITH NON-AQUEOUS SOLUTIONS OF NITRIC OXIDE COMPLEXES
The distribution of the nitrogen and oxygen isotopes between gaseous NO and the CuCl/sub 2/-complex in liquid methanol was studied. The separation factor alpha (N/sup 14/N/sup 15) was determined by single stage equilibration: alpha (N/sup 14/N/sup 15/) varies from 1.017 at --20 deg to 1.012 at +l0 deg . The separation obtained in a 200 cm column packed with 2 x 2 mm silver mesh rings corresponded to stage heights of 2.2 and 3.0 cm at interstage flows of 1.0 and 1.3 mM NO/cm/sup 2/ min and temperatures +14 deg and --20 deg . From column experiments the separation factor for the oxygen isotopes was estimated as 1.01 > alpha (O/sup 16/O/sup 18/) > 1.005 at room temperature. The system can be refluxed thermally (exchange-distillation) and is attractive for N/sup 15/- enrichment. It is not feasible for O/sup 18/-enrichment due to side reactions in the column. (auth)
- Research Organization:
- Columbia Univ., New York
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-16-000463
- OSTI ID:
- 4836683
- Journal Information:
- Journal of Physical Chemistry (U.S.), Journal Name: Journal of Physical Chemistry (U.S.) Vol. Vol: 65; ISSN JPCHA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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