Hydrogen production from a model bio-oil/bio-glycerol mixture through steam reforming using Zeolite L supported catalysts |
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| Affiliation: | 1. Faculty of Engineering, University of the Basque Country (UPV/EHU), C/Alda. Urquijo S/n, 48013 Bilbao, Spain;2. Dept. of Physical Chemistry, University of the Basque Country (UPV/EHU), Aptdo. 644, 48080 Bilbao, Spain;1. Faculty of Engineering, University of the Basque Country (UPV/EHU), C/Alda. Urquijo S/n, 48013 Bilbao, Spain;2. Dept. of Physical Chemistry, University of the Basque Country (UPV/EHU), Aptdo. 644, 48080 Bilbao, Spain;1. Institute of Nuclear Physics, Polish Academy of Sciences, ul. Radzikowskiego 152, 31-342, Kraków, Poland;3. AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology, Al. A. Mickiewicza 30, 30-059, Kraków, Poland;1. CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei, Anhui 230026, PR China;2. State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui 230026, PR China;3. Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration, Nanjing Engineering Institute of Aircraft System, Nanjing, Jiangsu, 211106, PR China |
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| Abstract: | Zeolite L featuring different size and shape (nanocrystals and discs), with and without alkaline metal exchange (Cs or Na), was used as catalyst support in bio-oil/bio-glycerol mixture Steam Reforming (SR). Zeolites were modified with CeO2 to improve support properties before the impregnation of nickel. Then, prepared catalysts were tested in SR of a multi-component synthetic bio-oil/bio-glycerol mixture at 1073 and 973 K, under atmospheric pressure and using a Steam to Carbon (S/C) ratio of 5.0. Activity tests showed that catalysts deactivated during the experiments at 973 K. In addition, the sodium exchange produced the sintering of the Zeolite L crystals. Thus, Na containing catalysts produced low conversions and hydrogen yields lower than 30%. On the other hand, Cs containing catalysts resulted in slightly lower hydrogen yields than the supports without this metallic cation. Regarding the morphology of the zeolites, the ones with disc shape were the most active for bio-oil SR purposes producing hydrogen yields close to 80% in the first reaction stage at 1073 K and hydrogen yields close to the 50% at the last reaction stage at 1073 K. |
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| Keywords: | Hydrogen Bio-oil Bio-glycerol Catalyst Steam reforming Zeolite L |
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