Structures and dehydrogenation activities of vanadium oxide overlayers on supports View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1993-03

AUTHORS

Toshio Okuhara, Kei Inumaru, Makoto Misono, Nobuyuki Matsubayashi, Hiromichi Shimada, Akio Nishijima

ABSTRACT

EXAFS study clarified the structure of vanadium oxide overlayers on MgO, Al2O3 and SiO2. On MgO, vanadium oxides were present as mixed oxides such as Mg3V2O8. Vanadium oxides were in the form of thin films on Al2O3 regardless of the preparation method. On the other hand, three different structures were present on SiO2; isolated species and crystallites by an impregnation method and thin films by chemical vapor deposition (CVD). The thin films on SiO2 were stable even at 773 K in air. Temperature programmed decomposition of ethanol adsorbed revealed that the dehydrogenation activities were strongly affected by the structure of the overlayers; thin films > crystallites ≫ isolated species. More... »

PAGES

73-79

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf00772598

DOI

http://dx.doi.org/10.1007/bf00772598

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1042801881


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