Studies on Catalytic Conversion of Chloromethane to Methane and Propane on SiO2/Al2O3: Kinetics of Deactivation Caused by Coking

Chloromethane was catalytically converted into methane and propane in a fixed-bed reactor with
control of pressure and flow rates. The deactivation by coking was studied in a microadsorber
equipped with gravimetric monitoring. In this study, two models were proposed: the first one proposed
that product production competes with coke formation; and the other one proposed that coke
formation competes with product desorption. Kinetic and thermodynamic parameters were estimated.
Results showed that chloromethane was activated by silica-alumina but the products were usually
high molecular weight hydrocarbons, which were broken down by acid sites to produce compounds
like methane and propane.

Author(s) Details
Leopoldo O. A. Rojas
Universidade Federal da Paraíba (UFPB), João Pessoa/PB, Brazil.

Juan A. C. Ruiz
Serviço Nacional de Aprendizagem Industrial (SENAI), Natal/RN, Brazil.

Márcio B. D. Bezerra
Universidade Estadual de Santa Cruz (UESC), Ilhéus/BA, Brazil.

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