Modified catalysts and process for the solar reduction of water

Details Modified catalysts and process for the solar reduction of water Modified catalysts and process for the solar reduction of water

1985-04-23

1986-08-19

Williams, Howard S.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

502167, 502168, 502223, B01J 1912

Patent

active

046067981

ABSTRACT:
A solar reaction system which produces hydrogen by reduction of hydronium ions using methylviologen or a related compound as an electron-transfer agent and a platinum electron-transfer catalyst, wherein the catalyst is modified with a water-soluble divalent sulphur compound, or a sulphur compound in which the sulphur is reducible to the divalent state, in an amount sufficient to inhibit hydrogenation side-reactions during the solar reduction process but not sufficient to significantly suppress the reduction of hydronium ion to hydrogen by the electron-transfer agent.

REFERENCES:
patent: 4325793 (1982-04-01), Kisch
patent: 4367131 (1983-01-01), Gratzel et al.
patent: 4511715 (1985-04-01), Palensky et al.
Darwent et al., Journal of the Chem. Soc., Chemical Comm. No. 4 (1981), pp. 145 & 146.
Chemical Abs., vol. 92, No. 13, Mar. 31, 1980, p. 371 (No. 107554k).
Johansen et al., Australian Journal Chem., vol. 34 (1981), pp. 2347-2354.
Israel Journal of Chem., vol. 22 (1982), pp. 158-162.

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