Deuterium separation and infrared photochemistry in chlorodifluoromethane (CF2HCl)

The sepn. was demonstrated by studying the IR multiphoton dissocn. of CF2DCl [1495-14-3] and CF2HCl/CF2DCl mixts. It is shown how the parameters which control the IR photochem. of CF2DCl such as the temp. and the pressure, as well as the wavelength, the energy fluence and the intensity of the laser pulse, can be optimized for D sepn. IR anal. of the disappearing CF2DCl and CF2HCl peaks indicates isotopic selectivities in excess of 104. Dissocn. yields of up to 5% are obsd. at fluences around 6 J cm-2 with 30 ns pulses at pressures in the range 0.3 to 150 torr. A new route is presented for redeuteration of the D-depleted CF2HCl to natural abundance by way of high-temp. exchange in the gas phase.


Published in:
Chemical Physics, 79, 2, 277-288
Year:
1983
Keywords:
Note:
Copyright 2003 ACS
CAPLUS
AN 1983:565405
CAN 99:165405
71-6
Nuclear Technology
74
Inst. Chim. Phys.,Ec. Polytech. Fed.,Lausanne,Switz. FIELD URL:
Journal
CMPHC2
written in English.
Isotope separation (of deuterium, by laser dissocn. of freon, IR photochem. in)
Laboratories:




 Record created 2011-02-01, last modified 2018-01-28


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