首页> 外文期刊>Journal of Oleo Science >Ultrasound Assisted Green Synthesis of 2-Ethylhexyl Stearate: A Cosmetic Bio-lubricant
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Ultrasound Assisted Green Synthesis of 2-Ethylhexyl Stearate: A Cosmetic Bio-lubricant

机译:超声辅助2-乙基己基硬脂酸盐的绿色合成:化妆品生物润滑剂

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摘要

The 2-ethylhexyl stearate is used as a bio-lubricant in various cosmetic products. The present study is focused on the biocatalyzed esterification of 2-ethylhexanol and stearic acid to form 2-ethylhexyl stearate catalyzed by Fermase CALB 10000 in the presence of ultrasound treatment. The maximum conversion (95.87%) was obtained at molar ratio of 2-ethylhexanol to stearic acid 2:1, enzyme amount of 2 % (w/w), power 80 W, duty cycle 50 % and temperature 50°C in comparatively short reaction time (3 h) in the presence of Fermase as a catalyst. At optimum conditions, it is observed that in the presence of ultrasound; the reaction time minimizes up to 4 h as compared to mechanical stirring method (7 h). The physiochemical properties for the 2-ethylhexyl palmitate were also evaluated.
机译:硬脂酸盐在各种化妆品中用作生物润滑剂的2-乙基己酯。本研究专注于2-乙基己醇和硬脂酸的生物催化酯化,以在超声处理存在下形成由FERMAS CALB 10000催化的2-乙基己烯基。以2-乙基己醇与硬脂酸2:1,2%(w / w),功率80w,占空比50%和温度50℃的酶量,获得最大转化率(95.87%)。相对短的在Fermase作为催化剂存在下反应时间(3小时)。在最佳条件下,观察到在超声波存在下;与机械搅拌方法(7小时)相比,反应时间最小化至4小时。还评估了2-乙基己基棕榈酸酯的物理化学性质。

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