Temperature-Programmed Desorption and Infrared Spectroscopic Studies of Benzene Adsorption in Zeolite ZSM-5

Sivasankar, N and Vasudevan, S (2004) Temperature-Programmed Desorption and Infrared Spectroscopic Studies of Benzene Adsorption in Zeolite ZSM-5. In: Journal of Physical Chemistry B, 108 (31). pp. 11585-11590.

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Abstract

The adsorption and desorption of benzene over the zeolite H-ZSM-5 has been investigated using simultaneous Fourier transform infrared (FTIR)-temperature-programmed desorption (TPD) measurements. The adsorption was studied as a function of benzene loading and the Si/Al ratio of the zeolite. FTIR and TPD confirm the existence of two types of sites for the adsorption of benzene in H-ZSM-5: Br nsted and non-Br nsted sites, with the latter located at the center of the intersection voids. The Br nsted sites are the favored sites for adsorption, and adsorption on the non-Br nsted sites occurs only after these sites are filled. There is no evidence for clustering or interaction between benzene molecules adsorbed on either the Br nsted or non-Br nsted sites.

Item Type:	Journal Article
Publication:	Journal of Physical Chemistry B
Publisher:	American Chemical Society
Additional Information:	Copyright for this article belongs to American Chemical Society.
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	03 Dec 2004
Last Modified:	17 Jan 2012 09:03
URI:	http://eprints.iisc.ac.in/id/eprint/2225

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