Abstract
Abstract Skeletal isomerization of cyclohexane and butane over WO3/ZrO2 catalyst was studied to elucidate the reaction mechanisms by carrying out co-isomerization of non-deuterated and per-deuterated reactant, and isomerization in the presence of D2. Based on the isotopic distribution of the product and reactant, it was revealed that the carbenium ion formation accompanying H transfer and the H- shift within carbenium ions are fast as compared to the skeletal rearrangement of carbenium ions and desorption of the products. The hydride transfer to the carbenium ions occurs both from the reactant and product, and from the hydride originating from hydrogen if present in gas phase.
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