Methane Activation on In-Modified ZSM-5: The State of Indium in the Zeolite and Pathways of Methane Transformation to Surface Species | Sciact - CRIS-system of Boreskov Institute of Catalysis

Methane Activation on In-Modified ZSM-5: The State of Indium in the Zeolite and Pathways of Methane Transformation to Surface Species Full article

Journal

The Journal of Physical Chemistry C
ISSN: 1932-7447 , E-ISSN: 1932-7455

Output data

Year: 2014, Volume: 118, Number: 15, Pages: 8034-8043 Pages count : 10 DOI: 10.1021/jp501314j

Tags

Activation analysis; Aromatization; Ethylene; Indium; Nuclear magnetic resonance spectroscopy; Photoelectrons; Surface reactions; X ray photoelectron spectroscopy

Authors

Gabrienko Anton A. ¹ , Arzumanov Sergei S. ^1,2 , Moroz Ilya B. ¹ , Prosvirin Igor P. ¹ , Toktarev Alexander V. ¹ , Wang Wei ³ , Stepanov Alexander G. ^1,2

Affiliations

1	Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Prospekt Akademika Lavrentieva 5, Novosibirsk 630090, Russia
2	Faculty of Natural Sciences, Department of Physical Chemistry, Novosibirsk State University, Pirogova Street 2, Novosibirsk 630090, Russia
3	State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, 222 Tianshui South Road, Lanzhou, Gansu 730000, People’s Republic of China

Funding (3)

1	Russian Foundation for Basic Research	12-03-91162
2	Russian Foundation for Basic Research	14-03-00040
3	The Ministry of Education and Science of the Russian Federation

Methane activation pathways as well as methane involvement in the reaction of ethylene aromatization on In-modified H-ZSM-5 zeolite (In/H-ZSM-5) have been studied with solid-state NMR spectroscopy. The state of indium in In/H-ZSM-5 in dependence of the zeolite activation procedure, reductive or oxidative, has been analyzed with X-ray photoelectron spectroscopy (XPS). On the basis of 1H MAS NMR analysis of the evolution of the quantity of Brønsted acid sites (BAS) and XPS analysis of the state of indium in dependence of zeolite activation procedure, it has been inferred that indium exists in the form of either In+ or InO+ isolated cationic species in the zeolite. Methane interaction with different indium cationic species has been analyzed with 13C MAS NMR spectroscopy. In+ species has been concluded to be inactive, whereas InO+ species provides dissociative adsorption of methane to afford primarily the oxyindium–methyl species. The secondary products of oxyindium–methyl species transformation are oxyindium–methoxy, ethane, formate, and acetaldehyde species. Methane can be involved in the reaction of ethylene aromatization on In-modified zeolite H-ZSM-5. This involvement is provided by the reaction of the surface oxyindium–methoxy species with simple aromatic molecules formed from ethylene. Preliminarily, oxyindium–methoxy species are generated by the interaction of oxyindium–methyl species with InO+ cations.

Gabrienko A.A. , Arzumanov S.S. , Moroz I.B. , Prosvirin I.P. , Toktarev A.V. , Wang W. , Stepanov A.G.
Methane Activation on In-Modified ZSM-5: The State of Indium in the Zeolite and Pathways of Methane Transformation to Surface Species
The Journal of Physical Chemistry C. 2014. V.118. N15. P.8034-8043. DOI: 10.1021/jp501314j WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	Feb 6, 2014
Accepted:	Mar 25, 2014
Published online:	Apr 4, 2014
Published print:	Apr 17, 2014

Web of science:	WOS:000334730300032
Scopus:	2-s2.0-84899018623
Elibrary:	21873370
Chemical Abstracts:	2014:498695
Chemical Abstracts (print):	160:534769
OpenAlex:	W2322493778

DB	Citing
Web of science	51
Scopus	54
Elibrary	49
OpenAlex	59