Biogas steam reformer for hydrogen production: Evaluation of the reformer prototype and catalysts |
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| Authors: | Celso Eduardo Tuna José Luz Silveira Márcio Evaristo da Silva Ronney Mancebo Boloy Lúcia Bolini Braga Nestor Proenza Pérez |
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| Affiliation: | 1. São Paulo State University, Faculty of Engineering at Guaratinguetá, Department of Energy, Laboratory of Optimization of Energy Systems (LOSE), Brazil;2. Federal Center of Technological Education Celso Suckow da Fonseca (CEFET/RJ), Angra dos Reis Campus, Brazil |
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| Abstract: | This work aims to investigate a biogas steam reforming prototype performance for hydrogen production by mass spectrometry and gas chromatography analyses of catalysts and products of the reform. It was found that 7.4% Ni/NiAl2O4/γ-Al2O3 with aluminate layer and 3.1% Ru/γ-Al2O3 were effective as catalysts, given that they showed high CH4 conversion, CO and H2 selectivity, resistance to carbon deposition, and low activity loss. The effect of CH4:CO2 ratio revealed that both catalysts have the same behavior. An increase in CO2 concentration resulted in a decrease in H2/CO ratio from 2.9 to 2.4 for the Ni catalyst at 850 °C, and from 3 to 2.4 for the Ru catalyst at 700 °C. In conclusion, optimal performance has been achieved in a CH4:CO2 ratio of 1.5:1. H2 yield was 60% for both catalysts at their respective operating temperature. Prototype dimensions and catalysts preparation and characterization are also presented. |
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| Keywords: | Hydrogen production Biogas steam reforming Steam reformer Catalysts |
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