Abstract
The dehydrogenation of propane (C3H8) utilizing solid catalysts is expected to be a promising method for producing propene (C3H6) selectively and economically. Propene is useful as a raw material to produce other valuable materials. To push forward the dehydrogenation reaction of C3H8, it is essential to find catalysts that work effectively in the activation of the C–H bonds in C3H8. To this end, we investigated the interaction of C3H8 with the copper-ion-exchanged MFI-type zeolite (CuMFI) at room temperature. The C3H8 adsorption properties of CuMFI were remarkable, compared with those of the sodium-form MFI-type zeolite (NaMFI); CuMFI exhibited irreversible adsorption, even at room temperature, whereas NaMFI exhibited reversible adsorption. Correspondingly, the CuMFI had an adsorption energy of 110 kJ mol–1 in the initial adsorption region, whereas the NaMFI had an adsorption energy of 50 kJ mol–1. Furthermore, a peculiar feature was observed in the appearance of the characteristic infrared (IR) absorpti...
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