Method for improving product yields in an anionic metalloporphyr

Details Method for improving product yields in an anionic metalloporphyr Method for improving product yields in an anionic metalloporphyr

1984-11-29

1986-02-04

Williams, Howard S.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

B01J 1912

Patent

active

045684359

ABSTRACT:
A method for improving product yields in an anionic metalloporphyrin-based artificial photosynthesis system for hydrogen generation which comprises forming an aqueous solution comprising an electron donor, methylviologen, and certain metalloporphyrins and metallochlorins, and irradiating said aqueous solution with light in the presence of a catalyst. In the photosynthesis process, solar energy is collected and stored in the form of a gas hydrogen. Ligands attached above and below the metalloporphyrin and metallochlorin plane are capable of sterically blocking photochemically inactive electrostatically bound .pi.--.pi. complexes which can develop.

REFERENCES:
patent: 4211621 (1980-07-01), Porter
patent: 4325793 (1982-04-01), Kish
patent: 4338291 (1982-07-01), Yamada et al.
patent: 4382846 (1983-05-01), Gratzel
Fuhrhop et al., Liebig's Ann. Chem., 1983, 204-210.

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