Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
Patent
1979-05-24
1981-09-01
Williams, Howard S.
Chemistry: electrical and wave energy
Processes and products
Processes of treating materials by wave energy
B01J 1912
Patent
active
042870356
ABSTRACT:
A method of initiating a rapid pH change in a solution by irradiating the solution with an intense flux of electromagnetic radiation of a frequency which produces a substantial pK change to a compound in solution. To optimize the resulting pH change, the compound being irradiated in solution should have an excited state lifetime substantially longer than the time required to establish an excited state acid-base equilibrium in the solution. Desired pH changes can be accomplished in nanoseconds or less by means of picosecond pulses of laser radiation.
REFERENCES:
patent: 2734027 (1956-02-01), Nickerson et al.
patent: 3649493 (1972-03-01), Meiners et al.
Ireland et al., "Acid-Base Properties of Electronically Excited States of Organic Molecules," in Advances of Physical Organic Chemistry, vol. 12, pp. 131-221, (1976).
Campillo Anthony J.
Clark John H.
Shapiro Stanley L.
Winn Kenneth R.
Denny James E.
Gaetjens Paul D.
The United States of America as represented by the United States
Walterscheid Edward C.
Williams Howard S.
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