Abstract
In a study of the thermal decomposition of tetralin, the rates of pyrolysis and of catalysed decomposition over molten tellurium or in the presence of tellurium vapour have been measured. All rate processes examined have been found to obey the first-order irreversible consecutive rate law and to proceed through the following reaction pathway: ▪ Both molten tellurium and tellurium vapour have been found to reduce the activation energy of the step A → B and enhance the frequency of the step B → C. Although the apparent activities of the two catalysts were found to be similar, estimates of the intrinsic activities indicate that the molten tellurium surface is more effective. It is suggested that the number of catalytic sites on the molten tellurium surface is larger than in the tellurium vapour.
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