Catalytic steam reforming of biomass-derived acetic acid over modified Ni/γ-Al2O3 for sustainable hydrogen production |
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| Affiliation: | 1. Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, Daejeon 305-343, South Korea;2. Department of Chemical and Biological Engineering, Korea University, Seoul 136-701, South Korea;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. Department of Chemical Engineering, Gazi University, Ankara, Turkey;2. Department of Chemical Engineering, Middle East Technical University, Ankara, Turkey;1. State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China;2. College of Metrological Technology and Engineering, China Jiliang University, Hangzhou 310018, China;1. Process Systems Engineering Centre (PROSPECT), Research Institute on Sustainable Environment (RISE), Universiti Teknologi Malaysia, 81310 UTM, Johor Bahru, Malaysia;2. Chemical Reaction Engineering Group (CREG), N01-Faculty of Chemical Engineering, Universiti Teknologi Malaysia, 81310 UTM, Johor Bahru, Malaysia |
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| Abstract: | In order to obtain sustainable H2, the catalytic steam reforming of acetic acid derived from biomass was performed by using the catalysts modified with basic promoters (Mg, La, Cu, and K). La and K increased the total basicity of Ni/γ-Al2O3 by 30.6% and 93.4%, respectively, which could induce ketonization, producing acetone. In contrast, Mg reduced the number of middle and strong basic sites by 17.2% and improved the number of weak basic sites by 5% for Ni/γ-Al2O3, which promoted the steam reforming of acetic acid (ca. 100% of H2 and carbon selectivity at even 450 °C) without ketonization. Moreover, the amount of carbon deposited on Ni/Mg/γ-Al2O3 was 55.1% less than that deposited on Ni/γ-Al2O3. When Cu was employed, the conversion was ca. 60% with less than 70% of H2 selectivity, at all temperatures considered herein. |
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| Keywords: | Steam reforming Acetic acid Basicity Coke formation Regeneration |
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