TY - JOUR
T1 - Hydrogen production via the glycerol steam reforming reaction over nickel supported on alumina and lanthana-alumina catalysts
AU - Charisiou, N. D.
AU - Siakavelas, G.
AU - Papageridis, K. N.
AU - Baklavaridis, A.
AU - Tzounis, L.
AU - Polychronopoulou, K.
AU - Goula, M. A.
N1 - Funding Information:
Financial support by the program THALIS implemented within the framework of Education and Lifelong Learning Operational Programme, co-financed by the Hellenic Ministry of Education, Lifelong Learning and Religious Affairs and the European Social Fund, Project Title: ‘Production of Energy Carriers from Biomass by Products. Glycerol Reforming for the Production of Hydrogen, Hydrocarbons and Superior Alcohols' (Grant number: 379333) is gratefully acknowledged by LAFEC's members. Moreover, LAFEC also wishes to express its gratitude to the Committee of the Special Account for Research Funds of the Western Macedonia University of Applied Sciences (ELKE/TEIWM, Grant number: 80126) for its financial support. Lazaros Tzounis is thankful to the Bodossaki Foundation for financial support. Kyriaki Polychronopoulou acknowledges the Abu Dhabi Educational Council through the Award for Research Excellence (A2RE). Finally, the authors are indebted to Dr Kalliopi Kousi for the TPO measurements.
Publisher Copyright:
© 2017 Hydrogen Energy Publications LLC
PY - 2017/5/4
Y1 - 2017/5/4
N2 - In the present work, a comparative study of Ni catalysts supported on commercially available alumina and lanthana-alumina carriers was undertaken for the glycerol steam reforming reaction (GSR). The supports and/or catalysts were characterized by PZC, BET, ICP, XRD, NH3-TPD, CO2-TPD, TPR and SEM. Carbon deposited on the catalytic surface was characterized by SEM, TPO and Raman. Concerning the Ni/LaAl sample it can be concluded that the presence of lanthana by: (a) facilitating the active species dispersion, (b) strengthening the interactions between nickel species and support, (c) increasing of the basic sites' population and redistributing the acid ones in terms of strength and density, provides a catalyst with improved performance for the GSR reaction, in terms of activity, H2 production and long term stability. TPO and Raman indicate that the carbon on the Ni/LaAl catalyst was mostly amorphous and was deposited mainly on the support surface. For the Ni/Al catalyst, graphitic carbon was prevalent and likely covered its active sites.
AB - In the present work, a comparative study of Ni catalysts supported on commercially available alumina and lanthana-alumina carriers was undertaken for the glycerol steam reforming reaction (GSR). The supports and/or catalysts were characterized by PZC, BET, ICP, XRD, NH3-TPD, CO2-TPD, TPR and SEM. Carbon deposited on the catalytic surface was characterized by SEM, TPO and Raman. Concerning the Ni/LaAl sample it can be concluded that the presence of lanthana by: (a) facilitating the active species dispersion, (b) strengthening the interactions between nickel species and support, (c) increasing of the basic sites' population and redistributing the acid ones in terms of strength and density, provides a catalyst with improved performance for the GSR reaction, in terms of activity, H2 production and long term stability. TPO and Raman indicate that the carbon on the Ni/LaAl catalyst was mostly amorphous and was deposited mainly on the support surface. For the Ni/Al catalyst, graphitic carbon was prevalent and likely covered its active sites.
KW - Alumina
KW - Glycerol
KW - Hydrogen
KW - Lanthana
KW - Nickel supported catalysts
KW - Steam reforming
UR - https://www.scopus.com/pages/publications/85018695277
U2 - 10.1016/j.ijhydene.2017.04.048
DO - 10.1016/j.ijhydene.2017.04.048
M3 - Article
AN - SCOPUS:85018695277
SN - 0360-3199
VL - 42
SP - 13039
EP - 13060
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 18
ER -
