Biogas steam reformer for hydrogen production: Evaluation of the reformer prototype and catalysts. (25th January 2018)

• Record Type: Journal Article
• Authors: Tuna, Celso Eduardo; Silveira, José Luz; da Silva, Márcio Evaristo; Boloy, Ronney Mancebo; Braga, Lúcia Bolini; Pérez, Nestor Proenza
• Is Part Of: International journal of hydrogen energy. Volume 43:Number 4(2018)
• Page Start: 2108
• Page End: 2120
• Publication Date: 2018-01-25
• Subjects: Hydrogen production -- Biogas steam reforming -- Steam reformer -- Catalysts; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2017.12.008
• Languages: English
• ISSNs: 0360-3199

Abstract

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/NiAl2 O4 /γ-Al2 O3 with aluminate layer and 3.1% Ru/γ-Al2 O3 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. Highlights: Steam reforming of biogas is experimentally investigated. Physical characteristics of the prototype and drawings are presented. Preparation and characterization of the catalysts are described in detail. 7.4% Ni/γ-Al2 O3 catalyst was efficient in temperatures equal or higher than 850 °C. 7.4% Ni and 3.1% Ru catalysts exhibit similar performance regardless of Treduction .