Selective Oxidation of Methanol to Form Dimethoxymethane and Methyl Formate over a Monolayer V2O5/TiO2 Catalyst | Sciact - CRIS-system of Boreskov Institute of Catalysis

Selective Oxidation of Methanol to Form Dimethoxymethane and Methyl Formate over a Monolayer V2O5/TiO2 Catalyst Full article

Journal

Journal of Catalysis
ISSN: 0021-9517 , E-ISSN: 1090-2694

Output data

Year: 2014, Volume: 311, Pages: 59-70 Pages count : 12 DOI: 10.1016/j.jcat.2013.10.026

Tags

Methanol oxidation, Monolayer catalyst, Near ambient pressure X-ray photoelectron spectroscopy, Vanadium pentoxide

Authors

Kaichev V.V. ^1,2 , Popova G.Ya. ¹ , Chesalov Yu.A. ¹ , Saraev A.A. ¹ , Zemlyanov D.Y. ³ , Beloshapkin S.A. ⁴ , Knop-Gericke A. ⁵ , Schlögl R. ⁵ , Andrushkevich T.V. ¹ , Bukhtiyarov V.I. ^1,2

Affiliations

1	Boreskov Institute of Catalysis of SB RAS, Lavrentieva Ave. 5, 630090 Novosibirsk, Russia
2	Novosibirsk State University, Pirogova St. 2, 630090 Novosibirsk, Russia
3	Birck Nanotechnology Center, Purdue University, 1205 West State Street, West Lafayette, IN 47907-2100, USA
4	Materials and Surface Science Institute, University of Limerick, Limerick, Ireland
5	Fritz-Haber-Institute of MPG, Faradayweg 4-6, D-14195 Berlin, Germany

Funding (2)

1	Russian Foundation for Basic Research	13-03-00128
2	European Commission	CT-2004-506008

The oxidation of methanol over highly dispersed vanadia supported on TiO2 (anatase) has been investigated using in situ Fourier transform infrared spectroscopy (FTIR), near ambient pressure X-ray photoelectron spectroscopy (NAP XPS), X-ray absorption near-edge structure (XANES), and a temperature-programmed reaction technique. The data were complemented by kinetic measurements collected in a flow reactor. It was found that dimethoxymethane competes with methyl formate at low temperatures, while the production of formaldehyde is greatly inhibited. Under the reaction conditions, the FTIR spectra show the presence of non-dissociatively adsorbed molecules of methanol, in addition to adsorbed methoxy, dioxymethylene, and formate species. According to the NAP XPS and XANES data, the reaction involves a reversible reduction of V5+ cations, indicating that the vanadia lattice oxygen participates in the oxidation of methanol via the classical Mars–van Krevelen mechanism. A detailed mechanism for the oxidation of methanol on vanadia catalysts is discussed.

Kaichev V.V. , Popova G.Y. , Chesalov Y.A. , Saraev A.A. , Zemlyanov D.Y. , Beloshapkin S.A. , Knop-Gericke A. , Schlögl R. , Andrushkevich T.V. , Bukhtiyarov V.I.
Selective Oxidation of Methanol to Form Dimethoxymethane and Methyl Formate over a Monolayer V2O5/TiO2 Catalyst

Journal of Catalysis. 2014. V.311. P.59-70. DOI: 10.1016/j.jcat.2013.10.026 WOS Scopus РИНЦ ANCAN OpenAlex

Full text from publisher

Submitted:	Jul 16, 2013
Accepted:	Oct 31, 2013
Published online:	Dec 15, 2013
Published print:	Mar 1, 2014

Web of science:	WOS:000333489500008
Scopus:	2-s2.0-84890534431
Elibrary:	21861965
Chemical Abstracts:	2014:283689
Chemical Abstracts (print):	160:310361
OpenAlex:	W2057044003

DB	Citing
Web of science	125
Scopus	133
Elibrary	137
OpenAlex	131