| 固体碱K_2CO_3/Al_2O_3催化酯交换法合成乙二醇甲醚乙酸酯 |
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| 引用本文： | 龚国珍,梁学正,王箭,权南南,张敬,鲍少华,杨建国.固体碱K_2CO_3/Al_2O_3催化酯交换法合成乙二醇甲醚乙酸酯[J].精细化工,2008,25(10). |
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| 作者姓名： | 龚国珍 梁学正 王箭 权南南 张敬 鲍少华 杨建国 |
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| 作者单位： | 华东师范大学,上海市绿色化学与化工过程绿色化重点实验室,上海,200062 |
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| 基金项目： | 国家支撑计划项目，上海市重点学科建设项目，上海市科委资助的国际科技合作项目 |
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| 摘 要： | 以固体碱K2CO3/Al2O3为催化剂,催化乙酸乙酯和乙二醇甲醚酯交换合成了乙二醇甲醚乙酸酯。考察了反应物摩尔比,催化剂用量,反应时间,催化剂重复使用等因素对反应的影响,结果表明:当n(乙酸乙酯)∶n(乙二醇甲醚)=4∶1,K2CO3/Al2O3用量为总反应物质量的1.0%,反应4.5h时,乙二醇甲醚的转化率为98.8%,选择性为100%;催化剂重复使用5次后,乙二醇甲醚的转化率仅下降3.7%。
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| 关 键 词： | K2CO3/Al2O3 酯交换反应 乙二醇甲醚乙酸酯 |
Synthesis of 2-Methoxyethyl Acetate by Transesterification on the Solid Base K2CO3/Al2O3 |
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| GONG Guo-zhen,LIANG Xue-zheng,WANG Jian,QUAN Nan-nan,ZHANG Jing,BAO Shao-hua,YANG Jian-guo.Synthesis of 2-Methoxyethyl Acetate by Transesterification on the Solid Base K2CO3/Al2O3[J].Fine Chemicals,2008,25(10). |
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| Authors: | GONG Guo-zhen LIANG Xue-zheng WANG Jian QUAN Nan-nan ZHANG Jing BAO Shao-hua YANG Jian-guo |
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| Abstract: | 2-Methoxyethyl acetate was synthesized using ethyl acetate and ethylene glycol monomethyl ether as reactants and the solid base K2CO3/Al2O3 as catalyst.Effects of molar ratio of reactants,catalyst dosage,reaction time and catalyst reuse were discussed.With 1% K2CO3/Al2O3 and n(ethyl acetate)/n(ethylene glycol monomethyl ether)=4,reacting at 80～110 ℃ for 4.5 h,conversion of ethylene glycol monomethyl ether was 98.8%.In addition,K2CO3/Al2O3 could be recovered after 5 times reuse without significant loss of its catalytic activity. |
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| Keywords: | K2CO3/Al2O3 |
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