Adsorption of pyridine on dealuminated zeolite HY

H. C. Wang; H. Paul Wang; Kuen Song Lin

doi:10.1080/10934529909376933

Adsorption of pyridine on dealuminated zeolite HY

H. C. Wang, H. Paul Wang, Kuen Song Lin

Department of Environmental Engineering

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Infrared spectra showed that over 80% of aluminum atoms on the surface of zeolite HY were extracted by a exposure of SiCl₄ vapor at elevated temperatures. The dealumination of the HY surface resulted in an appreciable change in its acidic properties. Infrared spectra of adsorbed pyridine indicated the formation of various kinds of Lewis acid sites on the delauminated HY surfaces. Although the total number of the surface Bronsted acid site decreased in the SiCl₄-induced dealumination process, the nature of these remaining Bronsted acid sites was unchanged spectroscopically.

Original language	English
Pages (from-to)	1849-1858
Number of pages	10
Journal	Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
Volume	34
Issue number	9
DOIs	https://doi.org/10.1080/10934529909376933
Publication status	Published - 1999

All Science Journal Classification (ASJC) codes

Environmental Engineering

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10.1080/10934529909376933

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title = "Adsorption of pyridine on dealuminated zeolite HY",

abstract = "Infrared spectra showed that over 80% of aluminum atoms on the surface of zeolite HY were extracted by a exposure of SiCl4 vapor at elevated temperatures. The dealumination of the HY surface resulted in an appreciable change in its acidic properties. Infrared spectra of adsorbed pyridine indicated the formation of various kinds of Lewis acid sites on the delauminated HY surfaces. Although the total number of the surface Bronsted acid site decreased in the SiCl4-induced dealumination process, the nature of these remaining Bronsted acid sites was unchanged spectroscopically.",

author = "Wang, {H. C.} and Wang, {H. Paul} and Lin, {Kuen Song}",

note = "Funding Information: ACKNOWLEDGEMENTS The financial support of the National Science Council of Taiwan (NSC 84-2211-E-006-022 and NSC 86-262l-P-006-003) are gratefully acknowledged.",

year = "1999",

doi = "10.1080/10934529909376933",

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T1 - Adsorption of pyridine on dealuminated zeolite HY

AU - Wang, H. C.

AU - Wang, H. Paul

AU - Lin, Kuen Song

N1 - Funding Information: ACKNOWLEDGEMENTS The financial support of the National Science Council of Taiwan (NSC 84-2211-E-006-022 and NSC 86-262l-P-006-003) are gratefully acknowledged.

PY - 1999

Y1 - 1999

N2 - Infrared spectra showed that over 80% of aluminum atoms on the surface of zeolite HY were extracted by a exposure of SiCl4 vapor at elevated temperatures. The dealumination of the HY surface resulted in an appreciable change in its acidic properties. Infrared spectra of adsorbed pyridine indicated the formation of various kinds of Lewis acid sites on the delauminated HY surfaces. Although the total number of the surface Bronsted acid site decreased in the SiCl4-induced dealumination process, the nature of these remaining Bronsted acid sites was unchanged spectroscopically.

AB - Infrared spectra showed that over 80% of aluminum atoms on the surface of zeolite HY were extracted by a exposure of SiCl4 vapor at elevated temperatures. The dealumination of the HY surface resulted in an appreciable change in its acidic properties. Infrared spectra of adsorbed pyridine indicated the formation of various kinds of Lewis acid sites on the delauminated HY surfaces. Although the total number of the surface Bronsted acid site decreased in the SiCl4-induced dealumination process, the nature of these remaining Bronsted acid sites was unchanged spectroscopically.

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JF - Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering

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Adsorption of pyridine on dealuminated zeolite HY

Abstract

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