The Role of Zinc Cations in the Conversion of Isobutane into Aromatics over Mechanical Mixtures of ZnO and H-ZSM-5

Article abstract of DOI:10.1246/bcsj.66.755

Mechanical mixtures of ZnO and H-ZSM-5 show high activities and selectivities for the aromatization of isobutane.The temperature-programmed desorption spectra of ammonia and the infrared spectra of adsorbed pyridene revealed that a solid-solid-ion-exchange occurs between ZnO and H-ZSM-5.The presence of Zn cations in the zeolite channels not only enhances the dehydrogenation, but also the C-C bond cleavage of isobutane.A mechanism for the activation of isobutane is proposed.