Inelastic neutron scattering and infrared spectroscopic study of furan adsorption on alkali-metal cation-exchanged faujasites

被引：27
|
作者：
Beta, IA
Herve, J
Geidel, E
Böhlig, H
Hunger, B
机构：
[1] Univ Leipzig, Wilhelm Ostwald Inst Phys & Theoret Chem, D-04103 Leipzig, Germany
[2] Inst Rech Catalyse, CNRS, F-69626 Villeurbanne, France
[3] Univ Hamburg, Inst Phys Chem, D-20146 Hamburg, Germany
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2001年 / 57卷 / 07期
关键词：
adsorption on zeolites; frequency shifts; furan; inelastic neutron scattering; vibrational spectra;
D O I：
10.1016/S1386-1425(00)00481-9
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
Inelastic neutron scattering (INS) as well as infrared (IR) transmission and diffuse reflection infrared Fourier transform (DRIFT) spectra of furan adsorbed on Li-LSX, NaY. NaX, K-LSX, and CsNaX zeolites have been measured in the range 2000-200 and 4000-1300 cm (- 1), respectively. On the basis of an assignment of normal modes of furan taken from the literature and our own quantum chemical calculations of vibrational frequencies, the observed frequency shifts between bulk furan and furan adsorbed on the zeolites mentioned above have been interpreted in view of the interactions between furan and zeolite. For an explanation of frequency shifts of CH out-of-plane bendings, CH stretchings and some ring vibrations, it has to be assumed that in addition to the interaction between furan and the corresponding cation of the zeolite, a further interaction between the CH bonds and lattice oxygen atoms exists. (C) 2001 Elsevier Science B.V. All rights reserved.
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页码：1393 / 1403
页数：11
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