Digitální knihovnaUPCE
 

Characterization of vanadium sites on vanadium-containing mesoporous silica catalysts and their catalytic behaviour in propane ODH

Článekpeer-reviewedpublished
Náhled

Datum publikování

2014

Vedoucí práce

Oponent

Název časopisu

Název svazku

Vydavatel

University of Pardubice

Abstrakt

Parameters that affect the catalytic behaviour of vanadium-containing mesoporous silicas in oxidative dehydrogenation reaction of propane are mainly aggregation state of surface VOx species and reducibility of vanadium species. Type and conditions of synthesis have big impact on the nature of vanadium species and, therefore, influence significantly catalytic properties. Two vanadiumcontaining mesoporous silica catalysts were synthesized by different techniques (including direct synthesis from hydrogel containing vanadium precursor and wet impregnation of SBA-15 mesoporous silica by vanadyl acetylacetonate) and their physico-chemical and catalytic properties were studied and compared. Direct synthesis of vanadosilicate led to catalysts with non-uniform mesoporosity, but exhibiting better spreading of vanadium on the surface resulting in species with lower degree of polymerization compared to impregnated catalyst. It is reflected in higher iso-conversional selectivity of directly synthesized catalyst towards propene.

Rozsah stran

p. 273–290

ISSN

1211-5541

Trvalý odkaz na tento záznam

Projekt

Zdrojový dokument

Scientific papers of the University of Pardubice. Series A, Faculty of Chemical Technology. 20/2014

Vydavatelská verze

Přístup k e-verzi

open access

Název akce

ISBN

978-80-7395-814-5

Studijní obor

Studijní program

Signatura tištěné verze

Umístění tištěné verze

Přístup k tištěné verzi

Klíčová slova

Endorsement

Review

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