TY - JOUR
T1 - Propane reactions over faujasite structure zeolites type-X and USY
T2 - Effect of zeolite silica over alumina ratio, strength of acidity and kind of exchanged metal ion
AU - Katranas, Theodoros K.
AU - Triantafyllidis, Konstantinos S.
AU - Vlessidis, Athanasios G.
AU - Evmiridis, Nicholaos P.
PY - 2007/10
Y1 - 2007/10
N2 - In this work we prepared various zeolite-X and USY samples partially exchanged with copper, iron and platinum. These samples were characterized by XRD, Chemical Analysis, SEM-EDS, N2-adsorption-desorption, ammonia-TPD, and tested as catalysts in high temperature (400 and 550 °C) propane transformation. The obtained results revealed the strong effect of Si/Al ratio in faujasite zeolite structure, the number and strength of acid sites and of the presence of different metal ions in countered ion sites, on the catalytic activity and selectivity of zeolite-X and USY. The highest propane dehydrogenation activity was achieved with the platinum-exchanged X zeolite (∼11.2% propylene yield, ∼31% selectivity). On the contrary USY zeolites showed high cracking capability and relatively low dehydrogenation activity excepting the platinum-exchanged sample which yielded notably high aromatization products.
AB - In this work we prepared various zeolite-X and USY samples partially exchanged with copper, iron and platinum. These samples were characterized by XRD, Chemical Analysis, SEM-EDS, N2-adsorption-desorption, ammonia-TPD, and tested as catalysts in high temperature (400 and 550 °C) propane transformation. The obtained results revealed the strong effect of Si/Al ratio in faujasite zeolite structure, the number and strength of acid sites and of the presence of different metal ions in countered ion sites, on the catalytic activity and selectivity of zeolite-X and USY. The highest propane dehydrogenation activity was achieved with the platinum-exchanged X zeolite (∼11.2% propylene yield, ∼31% selectivity). On the contrary USY zeolites showed high cracking capability and relatively low dehydrogenation activity excepting the platinum-exchanged sample which yielded notably high aromatization products.
KW - Catalysis
KW - Cracking
KW - Dehydrogenation
KW - Propane
KW - Zeolites type-X and USY
UR - https://www.scopus.com/pages/publications/34648832041
U2 - 10.1007/s10562-007-9152-3
DO - 10.1007/s10562-007-9152-3
M3 - Article
AN - SCOPUS:34648832041
SN - 1011-372X
VL - 118
SP - 79
EP - 85
JO - Catalysis Letters
JF - Catalysis Letters
IS - 1-2
ER -