Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
Patent
1984-08-22
1987-04-07
Williams, Howard S.
Chemistry: electrical and wave energy
Processes and products
Processes of treating materials by wave energy
204903, B01J 1912
Patent
active
046558918
ABSTRACT:
A process for the photochemical dehydrogenation of alcohols comprises the steps of forming a suspension of semiconductor powder in the alcohol and photochemically activating the suspension in the presence of an oxidant with illumination having an energy at least equal to the band gap of the semiconductor powder. The process is one carried out at about ambient temperature and with gentle agitation. The semiconductor powder has the general formula A.sub.x B.sub.y C.sub.z where A is selected from Bi, Sn, Pt, Pd, Cu, Fe, W, V, Sb, Mo, Ru or Ag and mixtures thereof; B is Te, Sb, Ti, Cd, Mo, W or V and mixtures thereof; C is O or S; x equals 0.1 to 5; y equals 1 to 3; and z is a number necessary to satisfy the other elements, and is optionally metallized by an element selected from Pt, Pd, Cu or Ag.
REFERENCES:
patent: 3591476 (1971-07-01), Battaerd
patent: 4264421 (1981-04-01), Bard et al.
patent: 4303486 (1981-12-01), Bard et al.
M. A. Malati and N. J. Seager "Further Investigation of the Photo-Induced Oxidation of Normal Primary Alcohols by Anatase Titanium Dioxide", J. Oil Col. Chem. Assoc. 64, pp. 231-233 (1981).
S. Teratani, J. Nakamichi, K. Taya and K. Tanaka "Photocatalytic Dehydrogenation of 2-Propanol over TiO.sub.2 and Metal/TiO.sub.2 Powders" Bull. Chem. Soc. Japan 55, pp. 1689-1690 (1982).
P. Pichat, J. Herrmann, J. Disdier, H. Courbon and M. Mozzanega "Photocatalytic Hydrogen Production from Aliphatic Alcohols over a Bifunctional Platinum on Titanium Dioxide Catalyst" Nouveau Journal de Chimie, vol. 5, p. 627 (1981).
Brazdil, Jr. James F.
Grasselli Robert K.
Ward Michael D.
Curatolo Joseph G.
Evans Larry W.
The Standard Oil Company
Williams Howard S.
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