Catalytic generation of hydrogen from acidic aqueous solutions of aqua ion of vanadium in the presence of thiocapsa roseopersicina hydrogenase and methyl viologen

Journal Article · Wed May 01 00:00:00 EDT 1985 · Bull. Acad. Sci. USSR, Div. Chem. Sci. (Engl. Transl.); (United States)

OSTI ID:6152294

Savinova, E R; Gogotov, I N; Parmon, V N; Zorin, N A

It is known that hydrogenases are not highly specific and that they can release H/sub 2/ in the presence of various electron donors. Thus, in the case of Thiocapsa roseopersicina hydrogenase, the specific donors may be any one of a number of low-potential electron carriers, including flavodoxin, cytochrome c/sub 3/, and methyl and benzyl viologen, substances which differ in nature. Thus far, however, no data are available on the use of inorganic reducing agents as electron donors for hydrogenase. The authors report here on a study of the possibility of using such a typical inorganic reducing agent as V/sup 2 +/ (aq) as an electron donor for Th. roseopersicina hydrogenase. They conclude that this hydrogenase can function in an acidic medium without loss of activity over the course of greater than or equal to 0.5h, and that feasibility is demonstrated for the use of vanadium (II) aqua ions as an electron donor for this hydrogenase in the presence of small quantities of methyl viologen, used as an intermediate electron carrier.

• Research Organization: Inst. of Catalysis, Siberian Branch, Novosibirsk
• OSTI ID: 6152294
• Journal Information: Bull. Acad. Sci. USSR, Div. Chem. Sci. (Engl. Transl.); (United States), Vol. 33:11; Other Information: Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 11, pp. 2454-2456, November, 1984
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
BACTERIA
BINDING ENERGY
ELECTRONS
REDUCTION
VALENCE
HYDROGEN PRODUCTION
BIOSYNTHESIS
CATALYSTS
HYDROGENASES
ACTIVATION ENERGY
AQUEOUS SOLUTIONS
BIOCHEMISTRY
BIPYRIDINES
ELECTRON TRANSFER
INORGANIC COMPOUNDS
MOLECULAR BIOLOGY
REACTION INTERMEDIATES
REDUCING AGENTS
VANADIUM COMPOUNDS
AZINES
CHEMICAL REACTIONS
CHEMISTRY
DISPERSIONS
ELEMENTARY PARTICLES
ENERGY
ENZYMES
FERMIONS
HETEROCYCLIC COMPOUNDS
LEPTONS
MICROORGANISMS
MIXTURES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDOREDUCTASES
PYRIDINES
SOLUTIONS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
080106* - Hydrogen- Production- Biosynthesis & Photochemical Processes