Method for improving product yields in an anionic metalloporphyrin-based artificial photosynthesis system

Patent · Wed Jan 01 00:00:00 EST 1986

OSTI ID:865756

Shelnutt, John A ^[1]

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1. Albuquerque, NM

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.

• Research Organization: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
• DOE Contract Number: AC04-76
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4568435
• OSTI ID: 865756
• Country of Publication: United States
• Language: English

Related Subjects

method
improving
product
yields
anionic
metalloporphyrin-based
artificial
photosynthesis
hydrogen
generation
comprises
forming
aqueous
solution
comprising
electron
donor
methylviologen
metalloporphyrins
metallochlorins
irradiating
light
presence
catalyst
process
solar
energy
collected
stored
form
gas
ligands
attached
below
metalloporphyrin
metallochlorin
plane
capable
sterically
blocking
photochemically
inactive
electrostatically
bound
complexes
product yields
synthesis process
comprises forming
aqueous solution
solar energy
solution comprising
electron donor
artificial photosynthesis
hydrogen generation
metalloporphyrin-based artificial
improving product
anionic metal
anionic metalloporphyrin-based
/204/