標題: Temperature effect on the photo-epoxidation of propylene over V-Ti/MCM-41 photocatalyst
作者: Nguyen, Van-Huy
Wu, Jeffrey C. S.
Bai, Hsunling
環境工程研究所
Institute of Environmental Engineering
關鍵字: Epoxidation;Photocatalysis;Propylene oxide;Temperature effect
公開日期: 5-Mar-2013
摘要: The effect of reaction temperature on the gas-phase photocatalytic epoxidation of propylene was systematically studied over V-Ti/MCM-41 photocatalyst at different temperatures (298-393 K). Temperature significantly influences the product distribution of photo-epoxidation. Raising temperature is favorable towards the formation of propionaldehyde (PA) due to inhibition of PA transformation to propionic acid (C2H5COOH), the intermediate product of acetaldehyde (AA). Results indicated that the reaction temperature has a dual-action to the reaction rate: (1) improving the desorption of reaction products, which provides more active sites for reaction and (2) reducing the adsorption of propylene on the photocatalyst, which declines the reaction efficiency. (C) 2012 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.catcom.2012.12.024
http://hdl.handle.net/11536/21734
ISSN: 1566-7367
DOI: 10.1016/j.catcom.2012.12.024
期刊: CATALYSIS COMMUNICATIONS
Volume: 33
Issue: 
起始頁: 57
結束頁: 60
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