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首页> 外文期刊>Journal of Polymers and the Environment >Application of Poly(styrene-co-divinylbenzene) Macroporous Microparticles as a Catalyst Support in the Enzymatic Synthesis of Biodiesel
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Application of Poly(styrene-co-divinylbenzene) Macroporous Microparticles as a Catalyst Support in the Enzymatic Synthesis of Biodiesel

机译：聚（苯乙烯-二乙烯基苯）大孔微粒作为催化剂载体在生物柴油酶法合成中的应用

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摘要

Macroporous poly(styrene-co-divinylbenzene) microparticles, with three different structural characteristics, have been synthesized and used as supports in the immobilization of lipase from Burkholderia cepacia. The best immobilization yield was found upon using microparticles with 35 % of divinylbenzene and the immobilized lipase on this type of particles was used as a catalyst to obtain biodiesel from soybean oil and ethanol. From the experimental results of the transesterification reaction, an empirical model quantitatively relating the temperature, the concentration of the enzyme and the transesterification yield was obtained. Statistical analysis of this model indicated that within the range of values of the variables studied (35-47 A degrees C and 231-788 U/mg respectively) only the enzyme concentration exerted a significant influence on the reaction yield. Additionally, the good fit of a Michaelis-Menten-type model to the experimental results suggests that the limiting step of the reaction was the formation of the enzyme-substrate complex.
机译：具有三种不同结构特征的大孔聚（苯乙烯-共二乙烯基苯）微粒已经合成，并用作固定洋葱伯克霍尔德氏菌脂肪酶的载体。当使用含35％二乙烯基苯的微粒时，固定化率最高，将固定化的脂肪酶用作此类催化剂，可从大豆油和乙醇中获得生物柴油。从酯交换反应的实验结果，获得了温度，酶的浓度和酯交换收率定量相关的经验模型。该模型的统计分析表明，在所研究变量的值范围内（分别为35-47 A摄氏度和231-788 U / mg），仅酶浓度对反应产率产生显着影响。此外，Michaelis-Menten型模型与实验结果的良好吻合表明反应的限制步骤是酶-底物复合物的形成。

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