3-2-4 イオン交換樹脂による遊離脂肪酸のメチルエステル化(3-2 バイオディーゼル1,Session3 バイオマス等,研究発表)

概要

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For the purpose of studying the pre-esterification of FFA contained in plant oil for biodiesel production, sulfonated cation-exchange resins of two types differing in textile structure of the matrix were tested for the solid acid catalysis. One of the employed resin catalysts was formed into the gelular matrix, and the other consisted of the macro-reticular matrix. Both of the resin catalysts were employed not only in the original bead shape but also in the powder form ground by an agate mortar. Oleic acid was esterified in its methanolic solution at 333 K as a result and the gelular resin was more active in catalyzing the esterification than the macro-reticular one. On the other hand, the macro-reticular resin was more effective in accelerating the internal mass transfer than the gelular resin. It seemed that retardation of the external mass transfer by liquid-liquid interfaces formed between oil and methanol phases was not so serious that the reaction kinetics changed from the pseudo-first order behavior to the zeroth one.
2011-08-09