VOx species supported on Al2O3-SBA-15 prepared by the grafting of alumina onto SBA-15: structure and activity in the oxidative dehydrogenation of ethane

Botková, Š.; Čapek, L.; Setnička, M.; Bulánek, R.; Čičmanec, P.; Kalužová, A.; Pastva, Jakub; Zukal, Arnošt

doi:https://dx.doi.org/10.1007/s11144-016-1036-3

Number of the records: 1

VOx species supported on Al2O3-SBA-15 prepared by the grafting of alumina onto SBA-15: structure and activity in the oxidative dehydrogenation of ethane

1.

SYSNO ASEP	0472527
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	VOx species supported on Al2O3-SBA-15 prepared by the grafting of alumina onto SBA-15: structure and activity in the oxidative dehydrogenation of ethane
Author(s)	Botková, Š. (CZ) Čapek, L. (CZ) Setnička, M. (CZ) Bulánek, R. (CZ) Čičmanec, P. (CZ) Kalužová, A. (CZ) Pastva, Jakub (UFCH-W)_{RID, ORCID} Zukal, Arnošt (UFCH-W)_RID
Source Title	Reaction Kinetics Mechanism and Catalysis. - : Springer - ISSN 1878-5190 Roč. 119, č. 1 (2016), s. 319-333
Number of pages	15 s.
Language	eng - English
Country	NL - Netherlands
Keywords	Ethane ; UV-Vis ; VOx species ; Al2O3-SBA-15
Subject RIV	CF - Physical ; Theoretical Chemistry
R&D Projects	GAP106/10/0196 GA ČR - Czech Science Foundation (CSF)
Institutional support	UFCH-W - RVO:61388955
UT WOS	000382942100024
EID SCOPUS	84987597381
DOI	10.1007/s11144-016-1036-3
Annotation	This paper focuses attention on the grafting of alumina onto SBA-15 material and the subsequent impregnation of vanadium oxide species (VO (x) ). The role of alumina loading on the distribution of VOx species was studied in V-Al2O3-SBA-15 catalysts and its activity/selectivity in oxidative dehydrogenation of ethane. The activity of V-Al2O3-SBA-15 materials are correlated with the textural properties (N-2-adsorption/desorption isotherms), the distribution of VO (x) species (H-2-TPR and DR UV-vis) and the acidic properties (NH3-TPD). While V-SBA-15 mainly contains monomeric tetrahedrally coordinated VOx species, grafting of alumina on SBA-15 catalysts result in decreasing population of isolated monomeric VOx units in V-Al2O3-SBA-15 catalysts, increasing population of T (d) oligomeric VOx species and the formation of a low amount of octahedrally coordinated VOx species. V-Al2O3-SBA-15 catalysts are more selective to ethane (at the same conversion of ethane) compared to V-SBA-15 and V-alumina catalysts.
Workplace	J. Heyrovsky Institute of Physical Chemistry
Contact	Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196
Year of Publishing	2017

Number of the records: 1