کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6763782 1431572 2019 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Immobilized lipase-catalyzed esterification for synthesis of trimethylolpropane triester as a biolubricant
ترجمه فارسی عنوان
استرینگ سازی کاتالیز شده لیپاز ایمونوئید شده برای سنتز تریستیل تریتی متیل پروپان به عنوان یک زیست تخمیر کننده
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
Synthetic oleochemical esters of polyols and fatty acids are biodegradable and possess desirable technical and ecological properties. Trimethylolpropane (TMP) triester has been widely applied as a hydraulic fluid. TMP triester was effectively synthesized by lipase-catalyzed esterification from TMP and high oleic fatty acid from palm oil using an immobilized lipase. The immobilized lipase was prepared with liquid Lipozyme TL 100 L from Thermomyces lanuginosus with Duolite A568 as a carrier. The effects of temperature, enzyme loading, vacuum level, and water activity of the enzyme on the synthesis of TMP triester were investigated. The optimum temperature, enzyme loading, and vacuum level were 60 °C, 15% (based on total substrate), and 6.7 kPa, respectively. The optimum water activity range of the enzyme was 0.5-0.9. Under the optimum conditions, the maximum conversion reached up to 95% after 9 h. No significant differences in physical properties were observed between TMP triester from this study and a commercial TMP triester prepared by chemical catalyst.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Renewable Energy - Volume 130, January 2019, Pages 489-494
نویسندگان
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