Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
Patent
1996-10-25
1999-02-02
Straub, Gary P.
Chemistry: electrical and wave energy
Processes and products
Processes of treating materials by wave energy
20415744, 4221663, 4232453, B01J 1908, B01J 800
Patent
active
058659595
ABSTRACT:
Illumination of the back-side of a UV transparent medium significantly reduces the decomposition of organic pollutants to carbon dioxide while significantly increasing the amount of radiation available for catalysis of the organic pollutants by a photocatalytic semiconductor. The UV light illuminates the UV transparent medium such that the UV propagates through the medium, illuminating the back-side of a photocatalytic semiconductor coating on the front-side. The photocatalytic semiconductor dissociates water on its surface to form hydroxyl radicals which in turn oxidize organic pollutants.
REFERENCES:
patent: 4892712 (1990-01-01), Robertson et al.
patent: 4954465 (1990-09-01), Kawashima et al.
patent: 4966665 (1990-10-01), Ibusuki et al.
patent: 4966759 (1990-10-01), Robertson et al.
patent: 5032241 (1991-07-01), Robertson et al.
patent: 5035784 (1991-07-01), Anderson et al.
patent: 5045288 (1991-09-01), Raupp
patent: 5078971 (1992-01-01), Matuda et al.
patent: 5308454 (1994-05-01), Anderson
patent: 5564065 (1996-10-01), Flock et al.
The First International Conference, 8-13 Nov. 1992, Cover Sheet, Table of Contents, pp. 1-9, "Tio.sub.2 Photocatalytic Purification And Treatment Of Water And Air".
"Mechanisms And By-Products Of The Tio.sub.2 Mediated Photo-Oxidation Of Trichloroethylene And Tetrachlorethylene In Aqueous Solutions", William H. Glaze, John F. Kenneke and John L. Ferry, pp. 39-40.
"Application Of Thin Film Tio.sub.2 Photocatalyst: Lighting System With Deodorizing Function", Kazuhito Hashimoto and Akira Fujishima, pp. 190-191.
"An Interior-Finishing Material With An Odor Control Function Coated By A Photocatalytic Tio.sub.2 Thin Film", Takatoshi Ogawa, Toshio Saito, Tamotsu Hasegawa, Hiroshi Shinozaki, Kazuito Hashimoto and Akira Fujishima, pp. 192-193.
"Photocatalytic Activity Of Tio.sub.2 Thin Film Under Room Light", Toshiya Watanabe, Atushi Kitamura, Eiichi Kojima, Chiaki Nakayama, Kazuhito Hashimoto and Akira Fujishima, pp. 202-203.
J. Phys. Chem., 1987, 91, pp. 3328-3333, "Photooxidation of Organic Impurities in Water Using Thin Films of Titanium Dioxide", Ralph W. Matthews.
Solar Energy Materials 14, 1986, pp. 121-127, "Photocatalysis Over Tio.sub.2 Supported On A Glass Substrate", Nick Serpone, Enrico Borgarello, Ron Harris, Paul Cahill and Mark Borgarello.
J. Phys. Chem., 1988, 92, pp. 5726-5731, "Kinetic Studies in Heterogeneous Photocatalysis. 1. Photocatalytic Degradation of Chlorinated Phenols in Aerated Aqueous Solutions over Tio.sub.2 Supported on a Glass Matrix", Hussain Al-Ekahi and Nick Serpone.
Chemtech, May 1993, Research, 8 pages, "Supported titania for photodegradation", Walter A. Zeltner, Charles G. Hill, Jr., Marc A. Anderson.
Environmental Science & Technology, Jan. 1995, 43 pp. "Development and Optimization of a Tio.sub.2 --Coated Fiber Optic Cable Reactor: Photocatalytic Degradation of 4--Chlorophenol", Nicola J. Peill and Michael R. Hoffann.
Journal of Catalysis, 136, 1992, pp. 554-565, "Heterogeneous Photocatalytic Oxidation of Gas-Phase Organics for Air Purification: Acetone, 1--Butanol, Butyraldehyde, Formaldehyde, and m-Xylene Oxidation", Jose Peral and David F. Ollis.
Journal of Molecular Catalysis, 00, 1993, 10 pages, Elsevier Science Publishers B.V., Amsterdam, "Removal of low concentration nitrogen oxides through photoassisted heterogeneous catalysis", Takashi Ibusuki et al.
International Search Report for PCT/US96/05866, mailed Dec. 6, 1996, for the PCT application that corresponds to United States Application 08/448,012 (Abandoned).
Curbelo Pamela J.
Meinzer Richard A.
Obee Timothy N.
Curbelo Pamela J.
Straub Gary P.
United Technologies Corporation
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