Photocatalytic liberation of hydrogen from aqueous-alcoholic solutions of heteropoly acids of the 12th order

Journal Article · Fri Jul 01 04:00:00 EDT 1983 · Kinet. Catal. (Engl. Transl.); (United States)

OSTI ID:5284104

Savinov, E N; Saidkhanov, S S; Parmon, V N

It has been found that upon illumination of aqueous-ethanolic solutions of the heteropoly acids (HPA) H/sub 3/(PMo/sub 12/O/sub 40/) (I), H/sub 4/(SiMo/sub 12/O/sub 40/) (II), H/sub 3/(PW/sub 12/O/sub 40/) (III), and H/sub 4/(SiW/sub 12/O/sub 40/) (IV) with light of lambda < 400 nm, a photocatalytic liberation of hydrogen occurs. It has been found that the liberation of hydrogen is preceded by successive photoreduction of HPA I by 2, 4, and 6 electrons, of HPA II by 2 and 4 electrons, and of HPA III-IV by 1 and 2 electrons, while the liberation of hydrogen results from a spontaneous reoxidation of the most extensively reduced forms of the HPA.

• Research Organization: Academy of Sciences of the USSR, Novosibirisk
• OSTI ID: 5284104
• Journal Information: Kinet. Catal. (Engl. Transl.); (United States), Journal Name: Kinet. Catal. (Engl. Transl.); (United States) Vol. 24:1; ISSN KICAA
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
080106* -- Hydrogen-- Production-- Biosynthesis &amp; Photochemical Processes
14 SOLAR ENERGY
140505 -- Solar Energy Conversion-- Photochemical
Photobiological
&amp; Thermochemical Conversion-- (1980-)
ALCOHOLS
AQUEOUS SOLUTIONS
CATALYTIC EFFECTS
CHEMICAL REACTIONS
DISPERSIONS
ELEMENTS
HETEROPOLY ACIDS
HYDROGEN
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INORGANIC ACIDS
MIXTURES
NONMETALS
ORGANIC COMPOUNDS
OXIDATION
PHOTOCHEMICAL REACTIONS
PRODUCTION
SOLUTIONS