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题名: ultrasound accelerated esterification of palmitic acid with vitamin c
作者: Wen Bin; Eli Wumanjiang; Xue Qunji; Dong Xin; Liu Weimin
关键词: acceleration of reaction ; L-ascorbyl 6-palmitate ; esterification ; synthetic technology ; ultrasound
刊名: Ultrasonics Sonochemistry
发表日期: 2007
DOI: 10.1016/j.ultsonch.2006.02.003
卷: 14, 期:2, 页:213-218
收录类别: SCI
摘要: The esterification of palmitic acid with vitamin C in the presence of concentrated sulfuric acid as the solvent and catalyst by means of 25 kHz ultrasonic irradiation to obtain l-ascorbyl 6-palmitate is studied. By using ultrasound the dissolution rate of the reactants can be accelerated greatly, the reaction time of esterification can be reduced from 36 to 2 h, and better yield (90-93%) of ester can be given by using 95% concentrated sulfuric acid as the solvent and catalyst, contrast to the yield of 75-85% by using 99% concentrated sulfuric acid without ultrasound. The influence of reaction conditions and ultrasonic parameters to the yield of ascorbyl palmitate are reported. © 2006 Elsevier B.V. All rights reserved.
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内容类型: 期刊论文
URI标识: http://ir.xjipc.cas.cn/handle/365002/2077
Appears in Collections:新疆维吾尔自治区精细化工工程技术研究中心_期刊论文

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作者单位: Chinese Acad Sci, XinJiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China;Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China

Recommended Citation:
Wen Bin,Eli Wumanjiang,Xue Qunji,et al. ultrasound accelerated esterification of palmitic acid with vitamin c[J]. Ultrasonics Sonochemistry,2007,14(2):213-218.
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