| 强酸性阳离子交换树脂催化合成食用香料乙酸辛酯 |
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| 引用本文： | 刘勇,卫敏,刘钟栋. 强酸性阳离子交换树脂催化合成食用香料乙酸辛酯[J]. 中国食品添加剂, 2011, 0(4) |
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| 作者姓名： | 刘勇 卫敏 刘钟栋 |
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| 作者单位： | 1. 河南大学化学化工学院,开封,475004
2. 河南工业大学粮油食品学院,郑州,450052 |
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| 基金项目： | 国家自然科学基金项目(11079019、31071606); 河南工业大学博士基金项目(2010BS019) |
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| 摘 要： | 乙酸辛酯具有橘子、茉莉和桃子的香气,可用作食用香料,其生产方法是以强酸性阳离子交换树脂( Amberlyst 15)为催化剂,以乙酸与正辛醇为原料直接酯化合成.本文考察了反应温度、酸醇摩尔配比、催化剂的用量、反应时间等因素对酯化反应的影响,确定了适宜的反应条件,为乙酸辛酯的工业化生产提供重要的基础依据.实验结果表明,强酸性阳离子交换树脂显示出良好的催化活性,较佳的反应条件:反应温度为90℃,酸醇摩尔配比为1:1,催化剂的用量为10％(占乙酸质量百分数),反应时间为3h,在此反应条件下酯化率可达58％以上.采用的催化剂循环使用5次后,酯化率仍可达55％以上,保持着较高的催化活性,并且催化剂具有分离简单、无腐蚀设备、无环境污染等优点.
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| 关 键 词： | 乙酸辛酯 乙酸 正辛醇 强酸性阳离子交换树脂 |
Synthesis of octyl acetate by strong acidic cation exchange resin |
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| LIU Yong,WEI Min,LIU Zhong-dong. Synthesis of octyl acetate by strong acidic cation exchange resin[J]. China Food Additives, 2011, 0(4) |
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| Authors: | LIU Yong WEI Min LIU Zhong-dong |
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| Affiliation: | LIU Yong 1,WEI Min2,LIU Zhong-dong2*(1.School of Chemistry and Chemical Engineering,Henan University,Kaifeng 475004,2.College of Food Science and Technology,Henan University of Technology,Zhengzhou 450052) |
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| Abstract: | Octyl acetate is used as a food flavoring.It posses orange,jasmine,and peach fragrances.Octyl acetate can be synthesized by direct esterification of acetic acid with n-octanol catalyzed by strongly acidic cation exchange resin(Amberlyst 15).The effect of different parameters such as temperature,molar ratio of acetic acid to n-octanol,catalyst amount,and reaction time on the conversion of acetic acid was investigated.The best synthesis conditions offer important information for octyl acetate industrializatio... |
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| Keywords: | octyl acetate acetic acid n-octanol cation exchange resin |
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