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首页> 外文期刊>American Journal of Chemical Engineering >Modified Sulfonated Glucose-Catalyzed Esterification of Palm Fatty Acid Distillate: Kinetics and Fuel Properties
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Modified Sulfonated Glucose-Catalyzed Esterification of Palm Fatty Acid Distillate: Kinetics and Fuel Properties

机译：棕榈脂肪酸馏分的改性磺化葡萄糖催化酯化：动力学和燃料性能

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The employment of sugar acid catalysts for biodiesel synthesis from non-edible palm fatty acid distillate (PFAD) has received huge research interest in recent times by reason of their stability and high catalytic performance. Notwithstanding, the need to extend research on the kinetic characteristics of these heterogeneous catalysts is important in order to understand their reaction mechanisms. The present investigation deals with the kinetics for the esterification of PFAD by means of modified sulfonated carbonized glucose catalyst to biodiesel in a three necked conventional reflux batch reactor. The efficient catalyst was synthesized by sulfonation of incomplete carbonized glucose. The pseudo-homogeneous first and second order (equimolar) mechanism was utilized to interpret the data at optimum operating conditions of 10:1 molar fraction of methanol to PFAD, 4 h time of reaction and 4 wt.% quantity of catalyst at varying reaction temperature of 50-65°C. Furthermore, some important properties of the PFAD biodiesel produced were assessed utilizing ASTM methods. The experimental data best fitted the bimolecular model (equimolar) second order model. The activation energy was calculated to be 55.08 kJmol~(-1) which indicates that the catalyst was very active in the esterification of the PFAD to biodiesel. Most of the measured fuel properties of the PFAD biodiesel were comparable with the ASTM standards.
机译：通过稳定性和高催化性能，近一次使用非食用棕榈脂肪酸馏分（PFAD）的生物柴油合成的糖酸催化剂的就业。尽管如此，需要延长对这些非均相催化剂的动力学特性的研究是重要的，以便理解其反应机制。本发明的调查涉及通过修饰的磺化碳化葡萄糖催化剂在三颈常规回流批量反应器中通过改性的磺化碳化葡萄糖催化剂对PFAD酯化的动力学。通过不完全碳化葡萄糖的磺化合成有效催化剂。利用伪均匀的第一和二阶（等摩尔）机理来解释在最佳操作条件下以10：1摩尔分数的最佳操作条件下的数据，反应4小时，4小时反应和4重量％的催化剂在不同反应温度下50-65°C。此外，利用ASTM方法评估所产生的PFAD生物柴油的一些重要特性。实验数据最能拟合双分子模型（等摩尔）二阶模型。将活化能量计算为55.08 kJmol〜（-1），表明催化剂在PFAD的酯化中非常活跃至生物柴油。 PFAD生物柴油的大多数测量的燃料特性与ASTM标准相当。

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