| Summary: | 碩士 === 國立成功大學 === 環境工程研究所 === 82 === Volatile organic compounds (VOCs) are the typical pollutants
the petrochemical industry. They can react with nirtorgen
oxides atmosphere to form the photochemical smog to add on the
adverse the human health. This study treated methanol, methyl
mercaptan, ethyl mercaptan by Pt catalyst in a fixed bed
reactor. The effects of operating factors, such as temperature,
space concentration, and oxygen concentration on the catalytic
performed. Besides, the kinetics of catalytic oxidation of VOC
by both the integral and differential methods. In the integral
used zero, first, and second order of reaction respectively to
experimental data; and in the differential method, severalsuch
as power-rate, Mars and Van Krevelen, Langmuir-Hinshelwood
models been used to analyze the results. We found that it would
get higher conversion of VOCs for higher temperature, lower
space velocity in all cases. The conversion increased with the
increasing concentration only applied in the It decreased in
both the methyl mercaptan and ethyl mercaptan concentration had
no significant effect on conversion ofthe higher oxygen
concentration did cause higher conversion of The results of
kinetics were shown as follows. By the integral catalytic
oxidation of methanol and ethyl mercaptan was the first order
reaction, with 21.7 KJ/mole and 76 KJ/mole of activation
respectively. By the differential method, the ethyl mercaptanr
the Mars and Van Krevelen model, and its activation energy was
89
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