The pyrolysis mechanism of isobutane was researched using molecular simulation method.The reaction path was built.In order to determine the possibility and difficulty level of each reaction
thermodynamics and kinetics calculations were made for each elementary reaction.The results showed that the rate-controlling step was the breaking of C—C bond in the molecule of isobutane
and the products were CH3 free radical and em-C3H7 free radical.Formation of propylene was the main reaction path
which was supported by kinetics.The yield ratio of propylene and isobutylene was 1.40:1