Effect of V2O5 Loading on Propane Combustion over Pt/V2O5–Al2O3 Catalysts

Autor:	Komandur V. R. Chary, Maria Sol Avila, Teresita Francisca Garetto, Carlos Rodolfo Apesteguia, V. Venkat Rao, Charito Ivana Vignatti
Rok vydání:	2009
Předmět:	Chemistry Inorganic chemistry Vanadium chemistry.chemical_element General Chemistry Combustion Heterogeneous catalysis Catalysis Vanadium oxide chemistry.chemical_compound Transition metal Propane Chemisorption
Zdroj:	Catalysis Letters. 134:118-123
ISSN:	1572-879X 1011-372X
DOI:	10.1007/s10562-009-0204-8
Popis:	Propane combustion was studied on Pt(0.4%)/V2O5–Al2O3 catalysts containing up to 20% V2O5. The density, strength and nature of surface acid sites were determined by TPD of NH3 and FTIR spectra of adsorbed pyridine. The sample acidity increased with the vanadium content, essentially because the addition of vanadium oxide generated Bronsted acid sites. The Pt dispersion as determined by H2 chemisorption increased with increasing V2O5 loading. The sample activity for propane combustion was evaluated through both conversion versus temperature (light-off curves) and kinetically-controlled conversion versus time catalytic tests. The propane combustion turnover rate on Pt/V2O5–Al2O3 increased with the amount of vanadium, probably because the intrinsic Pt oxidation activity increases with the sample acidity.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::476d57a8103efd2a6739f622fb253854 https://doi.org/10.1007/s10562-009-0204-8 Zobrazit plný text záznamu Full text from SpringerLink