Chemistry: electrical and wave energy – Processes and products
Patent
1981-10-09
1983-02-01
Andrews, R. L.
Chemistry: electrical and wave energy
Processes and products
204 78, 204 79, 204 80, 2041571R, 429111, C25B 300, C25B 500
Patent
active
043714315
ABSTRACT:
Thallium(III) is produced in solution using a photoelectrochemical cell which has an externally electrically interconnected semiconductor photoelectrode and counter electrode. A conductive solution containing thallium(I) is placed in the cell and a flow of current generated by exposing the photoelectrode to actinic radiation, thereby oxidizing the thallium.
In another embodiment, a thallium(III) solution is produced by mixing a solution containing thallium(I) with a particulate semiconductor, introducing an oxygen-containing gas into the mixture, and exposing the mixture to actinic radiation.
The produced thallium(III) can be reacted with organic compounds, for example with compounds containing at least one carbon-carbon double bond to form epoxides, concurrently reducing thallium. Continuous production can be obtained by recycling the reduced thallium by photoelectrochemical oxidation to thallium(III).
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Moorehead Eric L.
Switzer Jay A.
Andrews R. L.
Franks Robert A.
Sandford Dean
Union Oil Company of California
Wirzbicki Gregory F.
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