Abstract
The reaction of methane and hydrogen sulphide over a Pt Al 2O 3 catalyst has been studied in a fixed bed tubular reactor over a temperature range of 973 to 1073 K under atmospheric pressure and for space times between 0.1 and 1 s. The Langmuir-Hinshelwood-Hougen-Watson theory has been employed to obtain eighteen (18) rival kinetic models. The kinetic parameters are determined for all models and discrimination of the prevailing model is attempted by using statistical and thermodynamic constraints. According to that model the rate-controlling step is the reaction between one chemisorbed CH 2 and two S on the catalytic surface with the participation of three catalytic sites.
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