Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
Patent
1974-06-18
1978-11-07
Williams, Howard S.
Chemistry: electrical and wave energy
Processes and products
Processes of treating materials by wave energy
204158R, B01J 110
Patent
active
041244664
ABSTRACT:
Methods of enhancing selected chemical reactions. The population of a selected high vibrational energy state of a reactant molecule is increased substantially above its population at thermal equilibrium by directing onto the molecule a beam of radiant energy from a laser having a combination of frequency and intensity selected to pump the selected energy state, and the reaction is carried out with the temperature, pressure, and concentrations of reactants maintained at a combination of values selected to optimize the reaction in preference to thermal degradation by transforming the absorbed energy into translational motion. The reaction temperature is selected to optimize the reaction.
Typically a laser and a frequency doubler emit radiant energy at frequencies of .nu. and 2.nu. into an optical dye within an optical cavity capable of being tuned to a wanted frequency .delta. or a parametric oscillator comprising a non-centrosymmetric crystal having two indices of refraction, to emit radiant energy at the frequencies of .nu., 2.nu., and .delta. (and, with a parametric oscillator, also at 2.nu.-.delta.). Each unwanted frequency is filtered out, and each desired frequency is focused to the desired radiation flux within a reaction chamber and is reflected repeatedly through the chamber while reactants are fed into the chamber and reaction products are removed therefrom.
REFERENCES:
Artamonova et al, Soviet Physics JETP, vol. 31 No. 6 (Dec. 1970) pp. 1185-1188.
Ambartzumian et al, Applied Optics, vol. 11, No. 2 (Feb. 1972) pp. 354-358.
Battelle (Memorial Institute)
Dunson Philip M.
Hauth Joseph J.
Prezbindowski David L.
Williams Howard S.
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