Probing the acid sites in confined spaces of microporous materials by vibrational spectroscopy

被引:115
作者
Zecchina, A
Spoto, G
Bordiga, S
机构
[1] Univ Turin, Dipartimento Chim, IFM, I-10125 Turin, Italy
[2] NIS Ctr Excellence, Dipartimento Chim, IFM, I-10125 Turin, Italy
关键词
D O I
10.1039/b418763f
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
The use of IR spectroscopy for the evaluation of the Lewis and Bronsted acidity of microporous systems is illustrated having recourse to examples concerning zeolites, heteropolyacids and sulfonated membranes (NAFION). Methods based on the perturbation of the OH modes by interaction with basic probe molecules are illustrated as well as on the perturbation of the internal modes of the probe itself. The use of H-2 as probe is also debated by discussing new data specifically obtained for this review. The illustrated case examples are mainly obtained from the experience gained by the Turin group in 20 years.
引用
收藏
页码:1627 / 1642
页数:16
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