Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
Patent
1979-01-30
1983-02-15
Kyle, Deborah L.
Chemistry: electrical and wave energy
Processes and products
Processes of treating materials by wave energy
B01D 5900
Patent
active
043740103
ABSTRACT:
A method for photochemical separation or enrichment of isotopes of carbon-13 and oxygen-18 employing 123.58 nm resonance radiation of Kr of selected band-width and degrees of self-absorption in order to excite selectively to the A.sup.1 .pi.v'=13 state, .sup.13 C.sup.16 O, .sup.12 C.sup.18 O, or both .sup.13 C.sup.16 O and .sup.12 C.sup.18 O simultaneously, in a mixture of isotopic CO molecules where the .sup.12 C.sup.16 O isotopic molecule is in a large excess. The electronically excited isotopic CO molecules react with a second reactant to yield isotope enriched final products which can be separated; for example, ground state CO as second reactant yields CO.sub.2 and C.sub.3 O.sub.2 products.
REFERENCES:
Rommel, H., "The Photodecomposition of Carbon Monoxide in the Far Ultraviolet", Bonn. Univ., (W. Ger.), Contract AF 61 (052), 381, (1967).
Zare, R. N., "Laser Separation of Isotopes", Scientific American, 236:86-98, Feb., 1977.
Moore, C. B., "The Application of Lasers to Isotope Separation", Acc. Chem. Res., 6:323-328, 1973.
Letokhov, V. S., "Laser Separation of Isotopes", Ann. Rev. Phys. Chem., 28:133-159, 1977.
Dunn, D. et al., "Isotopic Enrichment of Carbon-13 and Oxygen-18 in the Ultraviolet Photolysis of Carbon Monoxide", J. Phys. Chem., 77(7):878-883, 1973.
Canadian Patents & Development Limited
Kyle Deborah L.
Thomson Alan A.
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