Catalytic steam reforming of biomass tar over iron- or nickel-based catalyst supported on calcined scallop shell

摘要: Abstract Calcined scallop shell (CS) exhibits alkaline property with a porous structure, and could be applied for the adsorption decomposition of biomass-derived tar. In this study, steam reforming tar derived from pruned apple branch over CS was investigated in fixed bed at 650 °C. It found that had good activity to produce synthesis gas (syngas), able recycled. To promote production efficiency, iron or nickel supported on CS, used The effect heating rate investigated, it reduced iron- nickel-supported showed better activities under condition rapid heating. Iron- nickel-based catalyst its oxide state also No catalytic beginning, but appeared after approximately 30 min reaction when metal metallic form by initially generated syngas (CO H 2 ) pyrolysis biomass without aid catalyst. Iron their forms rather than ones were considered as active sites Furthermore, elements biomass, which enhance catalysts, identified accumulated surface catalysts As result, larger amount produced regenerated applied. Based these experimental results, possible process proposed.