B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 21/06 (2006.01) B01J 35/00 (2006.01) C02F 1/32 (2006.01)
Patent
CA 2212869
A photocatalyst compound comprising: (i) a photocatalyst selected from the group consisting of TiO2, WO3 and mixtures thereof, the photocatalyst being substantially free of sharp, narrow band X-ray reflections at angles corresponding to those of crystalline TiO2, WO3 and mixtures thereof, and (ii) a porous, crystalline, adsorbent support material. A process for producing the photocatalyst compound is also disclosed. The process comprises: (i) hydrolysing a non-ionic titanium compound to produce a colloidal suspension having an average particle size of less than about 250 .ANG.; (ii) contacting a porous, crystalline, adsorbent support material with the colloidal suspension to produce an impregnated support; and (iii) calcining the impregnated support to produce the photocatalyst compound. The photocatalyst compound is useful, inter alia, in the treatment of a fluid containing an organic pollutant.
Composé photocatalyseur qui comprend (i) un photocatalyseur choisi dans le groupe constitué de TiO2, WO3 et de mélanges, desdites substances, ledit photocatalyseur étant sensiblement exempt de réflexions de rayons X fines et à bande étroite à des angles correspondant à ceux de TiO2, de WO3 et de mélanges desdites substances, sous forme cristalline, et (ii) un matériau de support poreux, cristallin et adsorbant. Un procédé de production dudit composé photocatalyseur est également décrit. Ledit procédé consiste (i) à hydrolyser un composé titane non ionique pour produire une suspension colloïdale dont la grosseur moyenne des particules est inférieure à environ 250 Å; (ii) à mettre en contact un matériau de support poreux, cristallin et adsorbant avec ladite suspension colloïdale pour produire un support imprégné et (iii) à calciner ledit support imprégné pour produire le composé photocatalyseur. Ledit composé est utile, entre autres, pour traiter un fluide contenant un polluant organique.
Langford Cooper H.
Xu Yiming
Gowling Lafleur Henderson Llp
University Technologies International Inc.
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