Journal
ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING
Volume 7, Issue 5, Pages 705-715Publisher
WILEY-BLACKWELL
DOI: 10.1002/apj.621
Keywords
Pd; SBA-15; catalytic oxidation; VOCs; mutual effects; kinetics
Categories
Funding
- National Science Fund for Distinguished Young Scholars [20725723]
- National High Technology Research and Development Program of China [2006AA06A310]
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This work aimed at investigating the reaction behaviors and kinetics of catalytic oxidation of benzene, toluene, and ethyl acetate over Pd/SBA-15 catalyst. Results for single components show that toluene (T50 = 185215 degrees C) is more easily oxidized than ethyl acetate (T50 = 220255 degrees C) and benzene (T50 = 215290 degrees C). The conversion of toluene and benzene decreases continuously as their inlet concentrations are increased. The conversion of ethyl acetate increases slightly when its feed concentration increases in a small range, while this trend is not kept when the concentration is further raised. Results for multicomponents reveal that the presence of benzene or toluene inhibits the conversion of ethyl acetate, and the aromatic hydrocarbons inhibit each other. Ethyl acetate has an inhibitory effect on benzene, while it is interested to note that the promotion behaviors are observed for toluene. Kinetic results of all studied volatile organic compounds obtained in the absence of diffusion limitations are fit to the Mars-van Krevelen expressions. (c) 2011 Curtin University of Technology and John Wiley & Sons, Ltd.
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