3-4-2 ゼオライト触媒を用いたバイオマス急速熱分解生成物のin-situ接触改質特性および反応機構(3-04 熱分解2,Session 3 バイオマス等)

概要

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Analytical pyrolysis experiments were performed to study reaction kinetics of in-situ catalytic reforming of products derived from fast pyrolysis of biomass. A ligno-cellulosic biomass as well as synthetic cellulose, xylan, and lignin were converted at 550℃ over zeolite catalysts with different acidities and pore sizes. HZSM-5 exhibited a highest performance in converting the ligno-cellulosic biomass into aromatic hydrocarbons. HZSM-5 had no significant effects in increasing the yield of aromatic hydrocarbons when xylan and lignin were used as feedstock whereas it converted 30% of carbon in cellulose to aromatic hydrocarbons. A detailed chemical kinetic model for cellulose vapor phase cracking suggested that the alkyne and diene such as acetylene, propyne, and cyclopentadiene are important intermediates which lead to benzene, toluene, and naphthalene, and the formation of which were also experimentally confirmed in early stage of the in-situ reforming.
一般社団法人日本エネルギー学会の論文
2013-07-29