INFRARED SPECTROSCOPIC STUDY OF THE BENDING MODES OF THE BRONSTED ACIDIC SITES IN DEUTERATED ZEOLITES

被引：16

作者：

JACOBS, WPJH

VANWOLPUT, JHMC

VANSANTEN, RA

机构：

[1] Schuit Institut of Catalysis, Laboratory of Inorganic Chemistry and Catalysis, Eindhoven University of Technology, MB Eindhoven

来源：

CHEMICAL PHYSICS LETTERS | 1993年 / 210卷 / 1-3期

关键词：

D O I：

10.1016/0009-2614(93)89095-Y

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Deuteration of Bronsted acidic sites in zeolites gives observable infrared in-plane O-D bending modes. For zeolite Y and ZK-5, a maximum near 870 cm-1 with a shoulder near 890 cm-1 is observed. These signals are related to, respectively, the high-frequency and the low-frequency stretching modes. Mordenite, zeolite beta and ZSM-5 possess a single mode near 890 cm-1. The zeolite structure type and composition influences the position of the modes strongly. A large anharmonicity parameter, x(deltadelta)OD (-80 cm-1), is found due to Fermi resonance with the zeolite lattice modes.

引用

页码：32 / 37

页数：6

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