| 负载型金属氧化物催化酯交换合成碳酸二甲酯 |
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| 引用本文： | 张依铭,刘定华,孙林兵,刘晓勤.负载型金属氧化物催化酯交换合成碳酸二甲酯[J].南京工业大学学报(自然科学版),2012,34(1):100-104. |
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| 作者姓名： | 张依铭 刘定华 孙林兵 刘晓勤 |
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| 作者单位： | 南京工业大学化学化工学院,材料化学工程国家重点实验室,江苏南京210009 |
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| 摘 要： | 制备了多种以γ - Al2O3为载体的负载金属氧化物催化剂,考察其在由碳酸乙烯酯(EC)与甲醇(ME)酯交换法合成碳酸二甲酯(DMC)中的催化活性,其中以K2 O/γ - Al2 O3催化活性较好.同时考察了负载量、催化剂用量、甲醇与碳酸乙烯酯摩尔比、反应温度、反应时间等因素对反应的影响,最终确定最佳反应条件:催化剂为K2O/γ - Al2O3,甲醇与碳酸乙烯酯摩尔比为5,m(催化剂)∶m(甲醇)为1∶200,反应温度为65℃,反应时间为3h,在此条件下,碳酸二甲酯收率最佳为52.0％.
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| 关 键 词： | 碳酸乙烯酯 碳酸二甲酯 酯交换 γ-Al2O3 金属氧化物 |
Synthesis of dimethyl carbonate by catalystic transesterification with loaded metal oxide |
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| ZHANG Yiming
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LIU Dinghua
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SUN Linbing
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LIU Xiaoqin.Synthesis of dimethyl carbonate by catalystic transesterification with loaded metal oxide[J].Journal of Nanjing University of Technology,2012,34(1):100-104. |
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| Authors: | ZHANG Yiming LIU Dinghua SUN Linbing LIU Xiaoqin |
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| Institution: | (State Key Laboratory of Materials-Oriented Chemical Engineering,College of Chemical and Chemistry Engineering, Nanjing University of Technology,Nanjing 210009,China) |
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| Abstract: | Various metal oxides loaded onγ-Al2O3 supports were prepared and used for the synthesis of dimethyl carbonate（DMC） from ethylene carbonate（EC ） and methanol（ME ）.The result showed that K2O/γ-Al2O3 was the best for the reaction.The load capacity,catalyst dosage,molar ratio of ME to EC were studied.Effects of reaction temperature,reaction time and other factors were investigated.The highest yield of DMC was 52.0%under the optimum conditions:the catalyst was K2O/γ-Al2O3,the molar ratio of ME to EC was 5,the reaction temperature was 65℃,and the reaction time was 3 h. |
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| Keywords: | ethylene carbonate dimethyl carbonate transesterification γ-Al2O3 metal oxide |
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