Deuterium separation with 1400-fold single-step isotopic enrichment and high yield by CO/sub 2/-laser multiple-photon dissociation of 2,2-dichloro-1,1,1-trifluoroethane
The compound 2,2-dichloro-1,1,1-trifluoroethane, CF/sub 3/CHCl/sub 2/, has been selected in an exhaustive search as the most promising working material for potentially viable laser separation of deuterium. Highly isotopically selective absorption in CF/sub 3/CDCl/sub 2/ occurs near 10.2 and 10.6 ..mu..m, accessible with the normal CO/sub 2/ laser. The single-step deuterium isotopic enrichment factor attains a value of 1400 at a fluence of 10 J/cm/sup 2/ for the dominant photoproduct, trifluoroethene (CF/sub 2/=CFD and CF/sub 2/=CFH). The probability for CF/sub 3/CDCl/sub 2/ dissociation into CF/sub 2/=CFD photoproduct occurs with a fluence threshold near 1.5 J/cm/sup 2/ and appears to saturate near 100% yield above 15 J/cm/sup 2/. Liquid-phase base-catalyzed H/D exchange occurs rapidly with water without hydrolysis to permit redeuteration of the CF/sub 3/CHCl/sub 2/ working material.
- Research Organization:
- Irving P.,Herman
- OSTI ID:
- 6419529
- Journal Information:
- Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 34:7; ISSN APPLA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Thermal conductivity and viscosity of 2,2-Dichloro-1,1,1-Trifluoroethane (HCFC-123)
Isobaric heat capacity data for liquid HCFC-123 (CHCl[sub 2]CF[sub 3],2,2-Dichloro-1,1,1-trifluoroethane)
Related Subjects
070100* -- Physical Isotope Separation
CARBON DIOXIDE LASERS
CHEMISTRY
CHLORINATED ALIPHATIC HYDROCARBONS
DEUTERIUM
DISSOCIATION
ENERGY
FLUORINATED ALIPHATIC HYDROCARBONS
FREONS
GAS LASERS
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROGEN ISOTOPES
ISOTOPE SEPARATION
ISOTOPES
LASER ISOTOPE SEPARATION
LASERS
LIGHT NUCLEI
NUCLEI
ODD-ODD NUCLEI
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHOTOCHEMISTRY
REFRIGERANTS
SEPARATION PROCESSES
STABLE ISOTOPES
THRESHOLD ENERGY