TY - JOUR
T1 - Support effects in the aqueous phase reforming of glycerol over supported platinum catalysts
AU - Ciftci, Aysegul
AU - Peng, Baoxiang
AU - Jentys, Andreas
AU - Lercher, Johannes A.
AU - Hensen, Emiel J.M.
N1 - Funding Information:
The authors thank financial support from the Graduate School on Sustainable Energy Technologies of the Danish Technical University , Technische Universität München and Eindhoven University of Technology . By Michel Ligthart, Leilei Wu and Brahim Mezari are acknowledged for help with H2 chemisorption, TEM and NMR measurements, respectively.
PY - 2012/7/26
Y1 - 2012/7/26
N2 - Aqueous phase glycerol reforming was studied for a set of Pt catalysts supported on γ-Al 2O 3, SiO 2 and amorphous silica-alumina (ASA) with varying alumina concentrations. The main products at 225 °C under 29 bar N 2 pressure for a feed of 20 wt.% glycerol are H 2, CO 2 and C 1-C 3 alkanes, 1,2-propanediol, hydroxyacetone and C 1-C 3 monoalcohols are the products in the liquid phase. Boehmite formation is observed for the γ-Al 2O 3 and ASA supported catalysts. The higher the Al concentration of ASA, the higher the amount of boehmite. Especially at low Al concentrations, the presence of boehmite is limited and silica leaches from the ASA support under reaction conditions. The increased surface acidity as a result of the presence of boehmite leads to increased hydroxyacetone formation (glycerol dehydration) and 1,2-propanediol (hydroxyacetone hydrogenation) formation. The activity of boehmite supported Pt for hydrodeoxygenation and reforming reactions is higher than that of γ-Al 2O 3 and SiO 2 supported Pt.
AB - Aqueous phase glycerol reforming was studied for a set of Pt catalysts supported on γ-Al 2O 3, SiO 2 and amorphous silica-alumina (ASA) with varying alumina concentrations. The main products at 225 °C under 29 bar N 2 pressure for a feed of 20 wt.% glycerol are H 2, CO 2 and C 1-C 3 alkanes, 1,2-propanediol, hydroxyacetone and C 1-C 3 monoalcohols are the products in the liquid phase. Boehmite formation is observed for the γ-Al 2O 3 and ASA supported catalysts. The higher the Al concentration of ASA, the higher the amount of boehmite. Especially at low Al concentrations, the presence of boehmite is limited and silica leaches from the ASA support under reaction conditions. The increased surface acidity as a result of the presence of boehmite leads to increased hydroxyacetone formation (glycerol dehydration) and 1,2-propanediol (hydroxyacetone hydrogenation) formation. The activity of boehmite supported Pt for hydrodeoxygenation and reforming reactions is higher than that of γ-Al 2O 3 and SiO 2 supported Pt.
KW - Amorphous silica alumina
KW - Aqueous phase reforming
KW - Glycerol
KW - Platinum
UR - http://www.scopus.com/inward/record.url?scp=84861882774&partnerID=8YFLogxK
U2 - 10.1016/j.apcata.2012.04.026
DO - 10.1016/j.apcata.2012.04.026
M3 - Article
AN - SCOPUS:84861882774
SN - 0926-860X
VL - 431-432
SP - 113
EP - 119
JO - Applied Catalysis A: General
JF - Applied Catalysis A: General
ER -