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* Corresponding author. Ting-Chia Huang,* Teh-Hua Tsai Department of Chemical Engineering National Cheng Kung University Tainan, Taiwan 70101, R.O.C. Received for review December 13, 1988 Revised manuscript received J u n e 8, 1989 Accepted June 26, 1989
Complete Catalytic Oxidation of Diethyl Sulfide over a 1 % Pt/Al,O, Catalyst The complete oxidation of diethyl sulfide over a 1% Pt/A1203 catalyst was studied using a fixed bed catalytic reactor. The reaction was studied in dry air between 225 and 300 "C and 1.25 atm of total pressure. The concentration of diethyl sulfide was varied between 6 and 250 ppm (v/v). The reaction was found to be zeroth order in diethyl sulfide concentration over the range of conditions studied, suggesting that, at even low concentrations, the reactant sulfide is strongly adsorbed by the active site. The zeroth-order rate constant was calculated to be 78.8 exp(-19117/RT) mol/(s.g of catalyst). Catalytic oxidation is widely used to purify streams of polluted air (e.g., industrial emissions, auto exhaust). When purifying air streams containing low concentrations (
