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Optimization and reaction kinetics of the production of biodiesel from castor oil via sodium methoxide-catalyzed methanolysis.

【摘要】 This paper studies castor oil's potential as a biodiesel feedstock. Base-catalyzed transesterification batch reactions were conducted at various experimental conditions while measuring the concentration of the reaction components over time. A gas chromatograph with a flame-ionization detector analyzed these samples.;A factorial design of experiments was used to determine how conversion was affected by reaction temperature, sodium methoxide concentration, and ratio of methanol to oil. Conversion was maximized (0.9964) at 30°C, 0.5% catalyst, and 9:1 molar ratio.;The concentration data were used to study the reaction kinetics. Modeling the reaction as three equilibria yielded six rate constants. These values indicate that castor oil transesterifies faster than soybean oil.;The fuel properties were determined by ASTM D 6751. Viscosity was excessively high, but specifications were met for the remaining tests.;Despite the promising yield and kinetics of the reaction, the fuel viscosity limits castor oil's viability as a biodiesel feedstock.

【作者】 Crymble, Scott David.;

【作者单位】 Mississippi State University.;

【授予单位】Mississippi State University.;

【学科】Engineering, Chemical.

【学位】M.S.

【年(卷),期】2010(),

【年度】2010

【页码】132 p.

【总页数】132

【原文格式】PDF

【正文语种】eng

【中图分类】;

【原文服务方】国家工程技术数字图书馆

【关键词】;

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