Study of the sorption and acidic properties of MTW-type zeolite |
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| Authors: | B H Chiche R Dutartre F Di Renzo F Fajula A Katovic A Regina G Giordano |
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| Affiliation: | (1) Laboratoire de Matériaux Catalytiques et Catalyse en Chimie Organique, URA 418 CNRS, ENSCM, 8 rue de l'Ecole Normale, 34053 Montpellier Cedex, France;(2) Dipartimento di Ingegneria Chimica e dei Materiali, Università della Calabria, I-87100 Rende, Italy |
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| Abstract: | The acidity of H-MTW-type zeolite has been investigated using infrared spectroscopy of adsorbed pyridine. Pore volume has been measured by nitrogen andn-hexane adsorption. The zeolite exhibits infrared signals at 3612 and 3580 cm–1 tentatively attributed to bridging hydroxyl groups vibrating in the main channel and in the six-membered rings of the structure, respectively. Both hydroxyl groups possess high acid strength and are readily accessible to pyridine. H-MTW shows an-hexane cracking activity at 350°C comparable to that obtained with MFI and BEA-type materials with a product selectivity between medium and large pore structural types. |
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| Keywords: | zeolite MTW ZSM-12 acidity pyridine adsorption FTIR n-hexane cracking |
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