Hydrogen production via the glycerol steam reforming reaction over nickel supported on alumina and lanthana-alumina catalysts
| Autor: | Maria A. Goula, Lazaros Tzounis, Kyriakos N. Papageridis, Kyriaki Polychronopoulou, G. Siakavelas, Nikolaos D. Charisiou, Apostolos Baklavaridis |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
inorganic chemicals
education.field_of_study Materials science Renewable Energy Sustainability and the Environment Catalyst support Population Inorganic chemistry Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Catalysis Steam reforming Nickel Fuel Technology chemistry Point of zero charge 0210 nano-technology education Carbon Hydrogen production |
| Zdroj: | International Journal of Hydrogen Energy. 42:13039-13060 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2017.04.048 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect