کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
208403 461248 2008 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Transesterification of Jatropha curcas oil glycerides: Theoretical and experimental studies of biodiesel reaction
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Transesterification of Jatropha curcas oil glycerides: Theoretical and experimental studies of biodiesel reaction
چکیده انگلیسی

Vegetal oil, also known as triglycerides, is a mixture of fatty acid triesters of glycerol. In the triglycerides alkyl chains of Jatropha curcas oil, predominate the palmitic, oleic and linoleic fatty acids. The process usually used to convert these triglycerides to biodiesel is called transesterification. The overall process is a sequence of three equivalent, consecutive and reversible reactions, in which di- and monoglycerides are formed as intermediates. Semi-empirical AM1 molecular orbital calculations were used to investigate the reaction pathways of base-catalyzed transesterification of glycerides of palmitic, oleic and linoleic acid. The most probable pathway and the rate determining-step of the reactions were estimated from the molecular orbital calculations. Our results suggest the formation of only one tetrahedral intermediate, which in a subsequent step rearranges to form the products. The rate determining-step is the break of this tetrahedral intermediate.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 87, Issues 10–11, August 2008, Pages 2286–2295
نویسندگان
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