54 各種ゼオライト触媒を用いたバイオディーゼル燃料の合成に関する研究(重質油・バイオマス・コプロセッシング(1))

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The relation of reactivity and characterization of Na ion exchanged various zeolites prepared as solid base catalyst for Biodiesel fuel (BDF) synthesis was investigated. Ten kinds of zeolite were used as the catalyst. The zeolites were ion exchanged in NaOH solution. BDF synthesis was carried out at 333K in a batch reactor using rapeseed oil and methanol (1:15) with Na ion exchanged zeolite catalysts. The methanol adsorbed quantity, the base site quantity, and the base strength on the prepared zeolite catalysts were measured. BDF yield was only accelerated when Na ion exchanged Mordenite (MOR), Ferrierite (FER) and Molecular sieve 5A type zeolites were used as catalyst. However, Molecular sieve 4A and 3A had less activity for BDF synthesis, although they have similar crystal structure of Molecular sieve 5A. It was appeared that the reactivity of Na ion exchanged zeolite catalysts for BDF synthesis was sensitive to the micro pore diameter and the channel structure of micro pores besides the change of base site quantity and base strength in zeolites.
2008-10-09