Acid-base and catalytic properties of alkali metal exchanged ZSM5

M. Derewinski; J. Haber; J. Ptaszynski; J. A. Lercher; G. Rumplmayr

doi:10.1016/S0167-2991(09)60970-8

Acid-base and catalytic properties of alkali metal exchanged ZSM5

M. Derewinski
, J. Haber
, J. Ptaszynski
, J. A. Lercher
, G. Rumplmayr

Polish Academy of Sciences
Technical University of Vienna

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

25 Scopus citations

Abstract

The acid-base properties of a series of alkali metal exchanged ZSM5 zeolites were investigated by Lr. spectroscopy, temperature programmed desorption and reaction and with catalytic measurements. The samples have moderately strong Lewis acid sites (Li>Na>K>Rb>Cs) and weak base sites. A comparison of the desorption behaviour of ammonia and pyridine with that of benzene revealed that the former compounds adsorb exclusively via their nitrogen atom, while benzene interacts with itsπ electron system. With all probe molecules LiZSM5 was found to be the most acidic and CsZSM5 to be the least acidic sample prepared. Temperature programmed and catalytic reactions of propan-2-01 reveal a similar order of acidity, the base properties seem, however, not to change significantly.

Original language	English
Pages (from-to)	957-964
Number of pages	8
Journal	Studies in Surface Science and Catalysis
Volume	28
Issue number	C
DOIs	https://doi.org/10.1016/S0167-2991(09)60970-8
State	Published - 1986
Externally published	Yes

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title = "Acid-base and catalytic properties of alkali metal exchanged ZSM5",

abstract = "The acid-base properties of a series of alkali metal exchanged ZSM5 zeolites were investigated by Lr. spectroscopy, temperature programmed desorption and reaction and with catalytic measurements. The samples have moderately strong Lewis acid sites (Li>Na>K>Rb>Cs) and weak base sites. A comparison of the desorption behaviour of ammonia and pyridine with that of benzene revealed that the former compounds adsorb exclusively via their nitrogen atom, while benzene interacts with itsπ electron system. With all probe molecules LiZSM5 was found to be the most acidic and CsZSM5 to be the least acidic sample prepared. Temperature programmed and catalytic reactions of propan-2-01 reveal a similar order of acidity, the base properties seem, however, not to change significantly.",

author = "M. Derewinski and J. Haber and J. Ptaszynski and Lercher, \{J. A.\} and G. Rumplmayr",

year = "1986",

doi = "10.1016/S0167-2991(09)60970-8",

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T1 - Acid-base and catalytic properties of alkali metal exchanged ZSM5

AU - Derewinski, M.

AU - Haber, J.

AU - Ptaszynski, J.

AU - Lercher, J. A.

AU - Rumplmayr, G.

PY - 1986

Y1 - 1986

N2 - The acid-base properties of a series of alkali metal exchanged ZSM5 zeolites were investigated by Lr. spectroscopy, temperature programmed desorption and reaction and with catalytic measurements. The samples have moderately strong Lewis acid sites (Li>Na>K>Rb>Cs) and weak base sites. A comparison of the desorption behaviour of ammonia and pyridine with that of benzene revealed that the former compounds adsorb exclusively via their nitrogen atom, while benzene interacts with itsπ electron system. With all probe molecules LiZSM5 was found to be the most acidic and CsZSM5 to be the least acidic sample prepared. Temperature programmed and catalytic reactions of propan-2-01 reveal a similar order of acidity, the base properties seem, however, not to change significantly.

AB - The acid-base properties of a series of alkali metal exchanged ZSM5 zeolites were investigated by Lr. spectroscopy, temperature programmed desorption and reaction and with catalytic measurements. The samples have moderately strong Lewis acid sites (Li>Na>K>Rb>Cs) and weak base sites. A comparison of the desorption behaviour of ammonia and pyridine with that of benzene revealed that the former compounds adsorb exclusively via their nitrogen atom, while benzene interacts with itsπ electron system. With all probe molecules LiZSM5 was found to be the most acidic and CsZSM5 to be the least acidic sample prepared. Temperature programmed and catalytic reactions of propan-2-01 reveal a similar order of acidity, the base properties seem, however, not to change significantly.

UR - https://www.scopus.com/pages/publications/79957539731

U2 - 10.1016/S0167-2991(09)60970-8

DO - 10.1016/S0167-2991(09)60970-8

M3 - Article

AN - SCOPUS:79957539731

SN - 0167-2991

VL - 28

SP - 957

EP - 964

JO - Studies in Surface Science and Catalysis

JF - Studies in Surface Science and Catalysis

IS - C

ER -

Acid-base and catalytic properties of alkali metal exchanged ZSM5

Abstract

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