Significant Influence of Zn on Activation of the C-H Bonds of Small Alkanes by Brønsted Acid Sites of Zeolite | Sciact - CRIS-system of Boreskov Institute of Catalysis

Significant Influence of Zn on Activation of the C-H Bonds of Small Alkanes by Brønsted Acid Sites of Zeolite Full article

Journal

ChemPhysChem
ISSN: 1439-4235 , E-ISSN: 1439-7641

Output data

Year: 2008, Volume: 9, Number: 17, Pages: 2559-2563 Pages count : 5 DOI: 10.1002/cphc.200800569

Tags

Alkanes, H/D exchange, Heterogeneous catalysis, Solid-state NMR, Zeolites

Authors

Stepanov Alexander G. ¹ , Arzumanov Sergei S. ¹ , Gabrienko Anton A. ¹ , Parmon Valentin N. ¹ , Ivanova Irina I. ² , Freude Dieter ³

Affiliations

1	Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Prospekt Akademika Lavrentieva 5, Novosibirsk 630090 (Russia)
2	Department of Chemistry, Moscow State University, Lenin Hills 1, Bld. 3, Moscow 119992 (Russia)
3	Abteilung Grenzflchenphysik, Universitt Leipzig, Linnstraße 5, 04103 Leipzig (Germany)

Funding (3)

1	Russian Foundation for Basic Research	07-03-00136
2	German Research Foundation	FR 902/15
3	International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union	03-51-5286

Herein, we analyze earlier obtained and new data about peculiarities of the H/D hydrogen exchange of small C1–n-C4 alkanes on Zn-modified high-silica zeolites ZSM-5 and BEA in comparison with the exchange for corresponding purely acidic forms of these zeolites. This allows us to identify an evident promoting effect of Zn on the activation of CH bonds of alkanes by zeolite Brønsted sites. The effect of Zn is demonstrated by observing the regioselectivity of the H/D exchange for propane and n-butane as well as by the increase in the rate and a decrease in the apparent activation energy of the exchange for all C1–n-C4 alkanes upon modification of zeolites with Zn. The influence of Zn on alkane activation has been rationalized by dissociative adsorption of alkanes on Zn oxide species inside zeolite pores, which precedes the interaction of alkane with Brønsted acid sites.

Stepanov A.G. , Arzumanov S.S. , Gabrienko A.A. , Parmon V.N. , Ivanova I.I. , Freude D.
Significant Influence of Zn on Activation of the C-H Bonds of Small Alkanes by Brønsted Acid Sites of Zeolite
ChemPhysChem. 2008. V.9. N17. P.2559-2563. DOI: 10.1002/cphc.200800569 WOS Scopus РИНЦ ANCAN PMID OpenAlex

Submitted:	Aug 28, 2008
Published online:	Oct 29, 2008
Published print:	Dec 1, 2008

Web of science:	WOS:000261721700018
Scopus:	2-s2.0-57349108644
Elibrary:	13588167
Chemical Abstracts:	2008:1527272
Chemical Abstracts (print):	150:472143
PMID:	18972491
OpenAlex:	W2139675388

DB	Citing
Web of science	64
Scopus	70
Elibrary	69
OpenAlex	70