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.

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

ZECCHINA, Adriano;SPOTO, Giuseppe;BORDIGA, Silvia
2005-01-01

Abstract

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.
2005
7
1627
1642
http://www.rsc.org/publishing/journals/CP/article.asp?doi=b418763f
hydrogen-bonded complexes; FTIR spectroscopic; acid sites; zeolites; NAFION; microporous materials
A. ZECCHINA; G. SPOTO; S. BORDIGA
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/40566
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