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DOI: 10.1039/A706369E (Paper) Reference Section for: J. Chem. Soc., Faraday Trans., 1998, 94, 467-471

Characterization of isomorphously substituted ZSM-23 and catalytic properties in n-buteneisomerization

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Paul Me′riaudeau, Vu Anh Tuan, Le Ngoc Hung, Vu Tuan Nghiem and and Claude Naccache

Abstract

Pure and well crystallized Al- and Fe-ZSM-23 were synthesized by a hydrothermal method. The products were characterized by XRD, SEM, n-hexane adsorption, chemical analysis, TPD of NH3 and IR thermodesorption of pyridine. The characterization results reveal that the substitution of Al with Fe leads to a considerable decrease in the strength of the Brönsted acid sites. n-Butene isomerization over Al- and Fe-ZSM-23 has been tested. It is shown that the lower Brönsted acidity of Fe-ZSM-23 compared with Al-ZSM-23 is reflected in a lower activity and higher selectivity in n-butene isomerization.

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