Process for enriching carbon 13

Details Process for enriching carbon 13 Process for enriching carbon 13

1990-01-23

1992-02-04

Niebling, John

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

B01D 500

Patent

active

050857487

ABSTRACT:
This invention relates to a process for enriching carbon 13 by mixing a halogenomethane containing one or more fluorine atoms and carbon 13 of natural isotopic abundance with one or two or more additive gases selected from a group of oxygen-containing oxidizing agents, halogens, and hydrogen halides, irradiating the resulting raw material gas mixture by a carbon dioxide laser to cause selective dissociation and reaction of the halogenomethane of carbon 13, separating the unchanged substances from the reaction mixture to obtain a product enriched with carbon 13, further converting the enriched product to carbon monoxide, and enriching carbon 13 by low-temperature distillation of the carbon monoxide. The process has advantages of low overall energy consumption, high yields of carbon 13, easy separability of the unchanged substances and high degrees of carbon 13 enrichment.

REFERENCES:
patent: 4212717 (1980-07-01), Moore et al.
patent: 4313807 (1982-02-01), de Mevergnies et al.
patent: 4406763 (1983-09-01), Hsu et al.
patent: 4436709 (1984-03-01), Gauthier
patent: 4941956 (1990-07-01), Arai et al.
D'Ambrosio, C. et al, ".sup.13 C-Separation by a Continuous Discharge CO.sub.2 Laser Q-Switched at 10 KH.sub.z ", Infrared Physics, vol. 29, Nos. 2-4 (1989), pp. 479-483.
Baranov et al., Proc. Conf. Laser, 1987, 1124.
Takeuchi et al., Chemical Industry, 47, 213-217 (1983).
Shimizu, Chemical Technol. MOL, 22, 73 (1983).

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