Autocatalytic gas-phase ethane dehydrogenation in a wall-less reactor |
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Authors: | V N Snytnikov T I Mishchenko Vl N Snytnikov O P Stoyanovskaya V N Parmon |
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Institution: | (1) State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, 15 Beisanhuan Dong Road, P.O. Box 35, Beijing, 100029, China; |
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Abstract: | The thermal gas-phase pyrolysis of ethane was studied under conditions of the bulk heating of the reaction mixture with IR-laser
radiation. The concentrations of ethane pyrolysis products as functions of reaction time were calculated in accordance with
standard kinetic schemes; they showed that a classical radical chain mechanism corresponded to only highly dilute mixtures
of ethane with an inert gas. As found by calculations, the experimental data on the kinetics of consumption of the initial
substance and on the kinetics of buildup of pyrolysis products in undiluted mixtures of ethane and its conversion products
were adequately described by an autocatalytic (with respect to ethylene) mechanism of ethane dehydrogenation. This mechanism
involved the step of ethane interaction with ethylene to form methyl and propyl radicals. |
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Keywords: | |
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