Photocatalytic degradation of aqueous hydroxy-butandioic acid (malic acid) in contact with powdered and supported titania in water
作者： Jean-Marie Herrmann , Halima Tahiri , Chantal Guillard , Pierre Pichat
DOI: 10.1016/S0920-5861(99)00175-3
关键词:
摘要: Abstract Malic acid, a model molecule for partially oxidized products found either in biomass or various degradative processes, could totally be mineralized by photocatalytic degradation. Laboratory experiments enabled one to determine the identity of 15 intermediates, logically presented four parallel degradation pathways. The major is initiated decarboxylation (‘photo-Kolbe’) reaction α-position with respect OH group. Parallel have been performed slurry pilot solar photoreactor at PSA (Almeria, Spain), on large scale (250 l). same main intermediate and kinetic laws were observed. TiO2 has used slurries supported several rigid inert plates. Deposition titania glass quartz was carried out dip coating procedure deposition stainless steel an electrophoretic process. resulting materials exhaustively characterized XPS, SEM/EDX, XRD UV-vis absorption spectroscopy. Their activity pattern as function nature support followed decreasing order: TiO2/quartz > TiO2/steel = TiO2/glass > > photolysis. This decline correlated presence cationic impurities (Si4+, Na+ Cr3+, Fe3+ steel) layer consequence thermal treatment necessary improve cohesion its adhesion onto support.
elsevier.com
sci-hub.se 参考文章(10)
G. R. Helz, Richard G. Zepp, Donald G. Crosby, Aquatic and Surface Photochemistry ,(1994)
Jean-Marie Herrmann, Jean Disdier, Pierre Pichat, Effect of chromium doping on the electrical and catalytic properties of powder titania under UV and visible illumination Chemical Physics Letters. ,vol. 108, pp. 618- 622 ,(1984) , 10.1016/0009-2614(84)85067-8
O. Legrini, E. Oliveros, A. M. Braun, Photochemical processes for water treatment Chemical Reviews. ,vol. 93, pp. 671- 698 ,(1993) , 10.1021/CR00018A003
Octave Levenspiel, Chemical Reaction Engineering ,(1972)
Wei Mu, Jean-Marie Herrmann, Pierre Pichat, Room temperature photocatalytic oxidation of liquid cyclohexane into cyclohexanone over neat and modified TiO2 Catalysis Letters. ,vol. 3, pp. 73- 84 ,(1989) , 10.1007/BF00765057
A. Fernández, G. Lassaletta, V.M. Jiménez, A. Justo, A.R. González-Elipe, J.-M. Herrmann, H. Tahiri, Y. Ait-Ichou, Preparation and characterization of TiO2 photocatalysts supported on various rigid supports (glass, quartz and stainless steel). Comparative studies of photocatalytic activity in water purification Applied Catalysis B-environmental. ,vol. 7, pp. 49- 63 ,(1995) , 10.1016/0926-3373(95)00026-7
J.-M. Herrmann, C. Guillard, P. Pichat, Heterogeneous photocatalysis : an emerging technology for water treatment Catalysis Today. ,vol. 17, pp. 7- 20 ,(1993) , 10.1016/0920-5861(93)80003-J
Y. Paz, A. Heller, Photo-oxidatively self-cleaning transparent titanium dioxide films on soda lime glass: The deleterious effect of sodium contamination and its prevention Journal of Materials Research. ,vol. 12, pp. 2759- 2766 ,(1997) , 10.1557/JMR.1997.0367
B.K. Hodnett, Photocatalytic purification and treatment of water and air : by D.F. Ollis and H. Al-Ekabi (Editors), Elsevier Science Publishers BV, Amsterdam, 1993, ISBN 0-444-89855-7, xiv + 820 pp., f450.00/$257.25 Applied Catalysis B-environmental. ,vol. 3, ,(1994) , 10.1016/0926-3373(94)80015-4
Jean-Marie Herrmann, Jean Disdier, Pierre Pichat, Sixto Malato, Julian Blanco, TiO2-based solar photocatalytic detoxification of water containing organic pollutants. Case studies of 2,4-dichlorophenoxyaceticacid (2,4-D) and of benzofuran Applied Catalysis B-environmental. ,vol. 17, pp. 15- 23 ,(1998) , 10.1016/S0926-3373(97)00098-2