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[1]程清蓉,李 琪,糜 昊,等.硅钨酸-锰配合物的合成及其催化活性[J].武汉工程大学学报,2015,37(06):15-20.[doi:10. 3969/j. issn. 1674-2869. 2015. 06. 004]
 ,,et al.Schif base manganese complex anchored to silicotungstic acid in synthesis of dodecyl chlorocetate[J].Journal of Wuhan Institute of Technology,2015,37(06):15-20.[doi:10. 3969/j. issn. 1674-2869. 2015. 06. 004]
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硅钨酸-锰配合物的合成及其催化活性(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
37
期数:
2015年06期
页码:
15-20
栏目:
化学与化学工程
出版日期:
2015-06-30

文章信息/Info

Title:
Schif base manganese complex anchored to silicotungstic acid in synthesis of dodecyl chlorocetate
文章编号:
1674-2869(2015) 06-0015-05
作者:
程清蓉李 琪糜 昊 周 红潘志权
武汉工程大学化学与环境工程学院,湖北 武汉 430074
Author(s):
CHENG Qing-rong LI Qi MI Hao ZHOU Hong PAN Zhi-quan
School of Chemistry and Environmental Engineering, Wuhan Institute of Technology,Wuhan 430074, China
关键词:
席夫碱锰配合物硅钨酸催化酯化反应
Keywords:
schiff base manganese complexes silicotungstic acid catalystesterification
分类号:
O69
DOI:
10. 3969/j. issn. 1674-2869. 2015. 06. 004
文献标志码:
A
摘要:
为了减少生产过程中的废液排放并降低生产成本,合成了硅钨酸-锰席夫碱配合物作为酯化反应的催化剂,通过红外光谱检测了催化剂的组成,并将其用于氯乙酸与十二醇酯化合成氯乙酸十二酯. 用单因素实验法研究了催化剂用量、醇酸摩尔比、反应时间以及催化剂重复使用次数对酯化反应产率的影响,并对合成的产品进行气相色谱分析后得到了优化工艺参数. 结果表明,催化剂在反应时间为3 h,n(十二醇)∶n(氯乙酸)为1∶1.15,催化剂用量为3.0%(相对于十二醇的质量分数)时,酯化产率可高达97%,且催化剂可循环使用4次. 该催化剂在酯化反应中催化效果好,可方便地回收,且具有优异的稳定性,能重复使用多次,是高效绿色催化剂.
Abstract:
To reduce the effluent discharge and the cost in the process of production, silicotungstic acid-Mn Schiff base complex was synthesized as solid catalyst in esterification. The composition of the catalyst was characterized by infrared spectroscopy, and the catalyst was used as solid catalyst in the lauryl alcohol chloroacetates esterification through phosphoric acid and lauryl alcohol. The four factors affecting the esterification reaction,such as the amount of catalyst,the molar ratio of acid and alcohol,the reaction time and the used times of catalyst were studied by single factor experiment method,and the products were analyzed by gas chrom atography to get the optimized process parameters.The optimum reaction conditions are obtained when laury1 alcohol of 0.09 mol is added as benchmark,n(alcoho1)/n(acid) is 1∶1.15, ω(catalyst) is 3.0%(based on dodecanol), the reaction time is 3 h and the catalyst is reused 4 times.The results show that the yield reaches 97% under the optimized condition. This catalyst is proved to be green catalyst with high efficiency, easy recoverability and excellent stability.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2015-03-19基金项目:武汉工程大学科学研究基金(K201471);武汉工程大学教学研究基金(X2014033)作者简介:程清蓉(1973-),女,湖北仙桃人,副教授,博士.研究方向:功能配合物.
更新日期/Last Update: 2015-09-11