NDLI: VO$_{x}$ species supported on Al$_{2}$O$_{3}$–SBA-15 prepared by the grafting of alumina onto SBA-15: structure and activity in the oxidative dehydrogenation of ethane

Content Provider	Springer Nature Link
Author	Botková, Š. Čapek, L. Setnička, M. Bulánek, R. Čičmanec, P. Kalužová, A. Pastva, J. Zukal, A.
Copyright Year	2016
Abstract	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 VO$_{x}$ species was studied in V–Al$_{2}$O$_{3}$–SBA-15 catalysts and its activity/selectivity in oxidative dehydrogenation of ethane. The activity of V–Al$_{2}$O$_{3}$–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 (NH$_{3}$-TPD). While V–SBA-15 mainly contains monomeric tetrahedrally coordinated VO$_{x}$ species, grafting of alumina on SBA-15 catalysts result in decreasing population of isolated monomeric VO$_{x}$ units in V–Al$_{2}$O$_{3}$–SBA-15 catalysts, increasing population of T$_{ d }$ oligomeric VO$_{x}$ species and the formation of a low amount of octahedrally coordinated VO$_{x}$ species. V–Al$_{2}$O$_{3}$–SBA-15 catalysts are more selective to ethane (at the same conversion of ethane) compared to V–SBA-15 and V-alumina catalysts.
Starting Page	319
Ending Page	333
Page Count	15
File Format	PDF
ISSN	18785190
Journal	Reaction Kinetics and Catalysis Letters
Volume Number	119
Issue Number	1
e-ISSN	18785204
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-05-27
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	ODH Ethane UV–Vis H$_{2}$-TPR VO$_{x}$ species Al$_{2}$O$_{3}$–SBA-15 Catalysis Physical Chemistry Industrial Chemistry/Chemical Engineering
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Catalysis

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