The kinetics of the reaction between γ-Al2O3 and gaseous C2Cl4 have been studied by anisothermal and isothermal TG measurements in the temperature range 298-1123 K. The weight loss due to chlorination becomes measurable above 933 K. Supposing dissociative adsorption the initial reaction rate can be described by a Langmuir-Hinshelwood type of rate expression in the partial pressure range investigated (0-2 x 103 Pa C2Cl4. The apparent activation energy calculated from the initial reaction rates (141 kJ mole-1) is in good agreement with that calculated from the rate constants of the Langmuir-Hinshelwood expression (133 kJ mole-1). The characteristic temperature dependence observed earlier in the γ-Al2O3 + CCl4 system can be interpreted by the results obtained in this work.
ASJC Scopus subject areas
- Condensed Matter Physics
- Physical and Theoretical Chemistry