On the Unusual Mechanism of Lewis Acidity Manifestation in HZSM-5 Zeolites Full article
Journal |
Zeolites
ISSN: 0144-2449 |
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Output data | Year: 1990, Volume: 10, Number: 7, Pages: 668-673 Pages count : 6 DOI: 10.1016/0144-2449(90)90077-5 | ||||
Tags | HZSM-5, i.r. spectroscopy, Lewis acidic sites | ||||
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Abstract:
The adsorption of CD3CN and NH3 on HZSM-5 zeolites containing prechemisorbed olefins were studied using diffuse reflectance i.r. spectroscopy. It is shown that in the presence of strong bases the unusual manifestation of Lewis acidity in these zeolites takes place as a result of fission of the Al←O bond in bridged alkoxyl groups by adsorbed base molecules. Nonempirical quantum-chemical calculations confirm this experimental finding and define the requirements of such Lewis acidity generation.
Cite:
Medin A.S.
, Borovkov V.Y.
, Kazansky V.B.
, Pelmentschikov A.G.
, Zhidomirov G.M.
On the Unusual Mechanism of Lewis Acidity Manifestation in HZSM-5 Zeolites
Zeolites. 1990. V.10. N7. P.668-673. DOI: 10.1016/0144-2449(90)90077-5 WOS Scopus РИНЦ
On the Unusual Mechanism of Lewis Acidity Manifestation in HZSM-5 Zeolites
Zeolites. 1990. V.10. N7. P.668-673. DOI: 10.1016/0144-2449(90)90077-5 WOS Scopus РИНЦ
Dates:
Submitted: | Aug 14, 1989 |
Accepted: | Jan 22, 1990 |
Published print: | Sep 1, 1990 |
Published online: | Sep 7, 2004 |
Identifiers:
Web of science | WOS:A1990DY84700007 |
Scopus | 2-s2.0-0025485152 |
Elibrary | 31076129 |
Chemical Abstracts | 1990:578912 |
Chemical Abstracts (print) | 113:178912 |
OpenAlex | W1968224425 |