Pb-205 バイオマスタールの水蒸気改質用酸化物触媒の反応挙動の解明(ポスターセッション2:2.技術,研究発表,(ポスター発表))

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Iron or nickel was supported on the calcined scallop (Patinopecten yessoensis) shell(CS), and used for the reforming of tar. Iron- or nickel-based catalyst in its oxide state was also investigated for the reforming of tar. No catalytic activity was found at the beginning, but good activity appeared after approximately 30 min of reaction when the metal oxide was reduced to its metallic form by the initially-generated syngas (CO and H_2) from the pyrolysis of biomass without the aid of catalyst. Iron and nickel in their metallic forms rather than their oxide ones were considered as active sites for the reforming of tar. Furthermore, the alkaline elements in the biomass, which could enhance the activity of the catalysts, were identified to be accumulated on the surface of the catalysts with the biomass-derived tar. As a result, a larger amount of syngas was produced when the regenerated catalysts were applied. Based on these experimental results, a possible catalytic process aspect was proposed.
2012-01-18