Acid And Base Strength Of Alumina-Magnesia Mixed Oxides

J. A. Lercher; Ch Colombier; H. Vinek; H. Noller

doi:10.1016/S0167-2991(09)60153-1

Acid And Base Strength Of Alumina-Magnesia Mixed Oxides

J. A. Lercher, Ch Colombier, H. Vinek, H. Noller

Technical University of Vienna

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

19 Scopus citations

Abstract

Acid and base strength of alumina magnesia mixed oxides was investigated by adsorption of various molecules. The change of the i.r. spectra of acetone, pyridine and carbon dioxide after adsorption was used to estimate the strength of Lewis acid and base sites which interacted with the adsorbed molecules. Gutmann's electron pair donor acceptor model served to explain the shifts of the i.r. bands. The strength of the acid sites decreased that of the basic sites increased with increasing magnesia content. While three different kinds of Lewis acid sites were observed (OH groups, Mg²⁺ and Al³⁺ cations) only one kind of Lewis base sites (oxygen) was detected.

Original language	English
Pages (from-to)	25-31
Number of pages	7
Journal	Studies in Surface Science and Catalysis
Volume	20
Issue number	C
DOIs	https://doi.org/10.1016/S0167-2991(09)60153-1
State	Published - 1 Jan 1985
Externally published	Yes

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title = "Acid And Base Strength Of Alumina-Magnesia Mixed Oxides",

abstract = "Acid and base strength of alumina magnesia mixed oxides was investigated by adsorption of various molecules. The change of the i.r. spectra of acetone, pyridine and carbon dioxide after adsorption was used to estimate the strength of Lewis acid and base sites which interacted with the adsorbed molecules. Gutmann's electron pair donor acceptor model served to explain the shifts of the i.r. bands. The strength of the acid sites decreased that of the basic sites increased with increasing magnesia content. While three different kinds of Lewis acid sites were observed (OH groups, Mg2+ and Al3+ cations) only one kind of Lewis base sites (oxygen) was detected.",

author = "Lercher, {J. A.} and Ch Colombier and H. Vinek and H. Noller",

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AU - Lercher, J. A.

AU - Colombier, Ch

AU - Vinek, H.

AU - Noller, H.

PY - 1985/1/1

Y1 - 1985/1/1

N2 - Acid and base strength of alumina magnesia mixed oxides was investigated by adsorption of various molecules. The change of the i.r. spectra of acetone, pyridine and carbon dioxide after adsorption was used to estimate the strength of Lewis acid and base sites which interacted with the adsorbed molecules. Gutmann's electron pair donor acceptor model served to explain the shifts of the i.r. bands. The strength of the acid sites decreased that of the basic sites increased with increasing magnesia content. While three different kinds of Lewis acid sites were observed (OH groups, Mg2+ and Al3+ cations) only one kind of Lewis base sites (oxygen) was detected.

AB - Acid and base strength of alumina magnesia mixed oxides was investigated by adsorption of various molecules. The change of the i.r. spectra of acetone, pyridine and carbon dioxide after adsorption was used to estimate the strength of Lewis acid and base sites which interacted with the adsorbed molecules. Gutmann's electron pair donor acceptor model served to explain the shifts of the i.r. bands. The strength of the acid sites decreased that of the basic sites increased with increasing magnesia content. While three different kinds of Lewis acid sites were observed (OH groups, Mg2+ and Al3+ cations) only one kind of Lewis base sites (oxygen) was detected.

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JO - Studies in Surface Science and Catalysis

JF - Studies in Surface Science and Catalysis

IS - C

ER -

Acid And Base Strength Of Alumina-Magnesia Mixed Oxides

Abstract

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