TY - JOUR
T1 - Propane oxidative dehydrogenation over VOx/SBA-15 catalysts
AU - Mitran, Gheorghita
AU - Ahmed, Rawaz
AU - Iro, Emmanuel
AU - Hajimirzaee, Saeed
AU - Hodgson, Simon
AU - Urdă, Adriana
AU - Olea, Maria
AU - Marcu, Ioan-Cezar
PY - 2018/5/15
Y1 - 2018/5/15
N2 - VOx/SBA-15 catalysts with five different vanadium loadings were prepared by a modified wet impregnation method, characterized using N2adsorption, XRD, EDX, SEM, Raman and UV–vis spectroscopies and H2-TPR techniques, and tested in the oxidative dehydrogenation of propane in the temperature range 450–600 °C. For all the catalysts the propane conversion increases with both reaction temperature and vanadium loading, while the selectivity for propene decreases mainly to the benefit of carbon oxides. Several types of VOxspecies coexist on the catalyst surface, with monomeric and low-polymerized ones leading mainly to propene, while V2O5crystallites at high vanadium loadings producing more carbon oxides. Propene was determined to be the only primary product irrespective of the vanadium content.
AB - VOx/SBA-15 catalysts with five different vanadium loadings were prepared by a modified wet impregnation method, characterized using N2adsorption, XRD, EDX, SEM, Raman and UV–vis spectroscopies and H2-TPR techniques, and tested in the oxidative dehydrogenation of propane in the temperature range 450–600 °C. For all the catalysts the propane conversion increases with both reaction temperature and vanadium loading, while the selectivity for propene decreases mainly to the benefit of carbon oxides. Several types of VOxspecies coexist on the catalyst surface, with monomeric and low-polymerized ones leading mainly to propene, while V2O5crystallites at high vanadium loadings producing more carbon oxides. Propene was determined to be the only primary product irrespective of the vanadium content.
UR - http://www.scopus.com/inward/record.url?scp=85008192344&partnerID=8YFLogxK
U2 - 10.1016/j.cattod.2016.12.014
DO - 10.1016/j.cattod.2016.12.014
M3 - Article
SN - 0920-5861
VL - 306
SP - 260
EP - 267
JO - Catalysis Today
JF - Catalysis Today
ER -