Počet záznamů: 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
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SYSNO ASEP 0472527 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název 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 Tvůrce(i) 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) RIDZdroj.dok. Reaction Kinetics Mechanism and Catalysis. - : Springer - ISSN 1878-5190
Roč. 119, č. 1 (2016), s. 319-333Poč.str. 15 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova Ethane ; UV-Vis ; VOx species ; Al2O3-SBA-15 Vědní obor RIV CF - Fyzikální chemie a teoretická chemie CEP GAP106/10/0196 GA ČR - Grantová agentura ČR Institucionální podpora UFCH-W - RVO:61388955 UT WOS 000382942100024 EID SCOPUS 84987597381 DOI 10.1007/s11144-016-1036-3 Anotace 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. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2017
Počet záznamů: 1