Chemistry of inorganic compounds – Carbon or compound thereof – Oxygen containing
Patent
1982-02-22
1984-03-13
Kyle, Deborah L.
Chemistry of inorganic compounds
Carbon or compound thereof
Oxygen containing
204158R, 250423P, B01D 5900
Patent
active
044367090
ABSTRACT:
A method of producing carbon-13 using CF.sub.2 HCl as the feedstock (substrate) material in which the CF.sub.2 HCl is enriched up to a first level of C-13 by I.R. laser photodissociation and then to 90-99% C-13 by a second exchange process. In the preferred arrangement the second stage is a chemical exchange process.
REFERENCES:
patent: 4120767 (1978-10-01), Bittenson et al.
Gauthier et al., "Efficient Production of .sup.13 C.sub.2 F.sub.2 . . . " Appl. Phys. B 28, 43-50 (1982).
Lyman et al., "Enrichment of Boron, Carbon and Silicon Isotopes . . . " J. Appl. Phys. 47 (2) 595-601 (1976).
Andrews et al., "Infrared Spectra . . . " , J. Phys. Chem. 83 (7) 824-831 (1979).
Grunwald et al., "Megawatt I. R. Laser Chemistry of CHClF.sub.2 " J. Amer. Chem. Soc. 99 (20) 6515-6521 (1977).
Stachewski, "Aktuelle Produktionsverfahren zur Gewinnung" Chemie-Technik 4 (8) 269-280 (1975).
Gauthier Michel
Hackett Peter A.
Willis Clive
Canadian Patents & Development Limited
Hughes James R.
Kyle Deborah L.
Thomson Alan A.
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