TY - JOUR
T1 - Carbon covered alumina prepared by the pyrolysis of sucrose: A promising support material for the supported Pt-Sn-bimetallic dehydrogenation catalysis
AU - Luo, S.
AU - He, Songbo
AU - Li, X.R.
AU - Seshan, Kulathuiyer
N1 - Special Issue of the 2nd International Congress on Catalysis for Biorefineries (CatBior 2013)
PY - 2014
Y1 - 2014
N2 - Sucrose was pyrolyzed on gamma alumina surface to prepare carbon covered alumina (CCA) material. Alumina and CCA supported Pt–Sn catalysts were prepared by the complex impregnation method under vacuum. Dehydrogenation of n-octadecane was performed to study the effect of carbon addition, Pt loading and Sn/Pt weight ratio on the catalytic dehydrogenation activity, selectivity and catalyst stability. BET, mercury porosimetry, XRD, CO-chemisorption, TPR and TG-DTA were used for the carrier and the corresponding catalyst characterization. The results showed that more carbon addition, Pt loading and higher Sn/Pt ratio are propitious to the mono-olefin selectivity and catalyst stability. Pt–Sn was easily formed on the Pt–Sn/CCA catalysts, especially when the Pt loading and Sn/Pt ratio were very high. To keep optimal dehydrogenation conversion, taking consideration to good selectivity and stability, the carbon content, Pt and Sn loading of Pt–Sn/CCA catalysts should be 8.37 wt.%, 0.5 wt.% and 3 wt.%, respectively.
AB - Sucrose was pyrolyzed on gamma alumina surface to prepare carbon covered alumina (CCA) material. Alumina and CCA supported Pt–Sn catalysts were prepared by the complex impregnation method under vacuum. Dehydrogenation of n-octadecane was performed to study the effect of carbon addition, Pt loading and Sn/Pt weight ratio on the catalytic dehydrogenation activity, selectivity and catalyst stability. BET, mercury porosimetry, XRD, CO-chemisorption, TPR and TG-DTA were used for the carrier and the corresponding catalyst characterization. The results showed that more carbon addition, Pt loading and higher Sn/Pt ratio are propitious to the mono-olefin selectivity and catalyst stability. Pt–Sn was easily formed on the Pt–Sn/CCA catalysts, especially when the Pt loading and Sn/Pt ratio were very high. To keep optimal dehydrogenation conversion, taking consideration to good selectivity and stability, the carbon content, Pt and Sn loading of Pt–Sn/CCA catalysts should be 8.37 wt.%, 0.5 wt.% and 3 wt.%, respectively.
KW - METIS-306337
KW - IR-92485
U2 - 10.1016/j.cattod.2014.02.010
DO - 10.1016/j.cattod.2014.02.010
M3 - Article
VL - 234
SP - 295
EP - 300
JO - Catalysis today
JF - Catalysis today
SN - 0920-5861
ER -