| 纳米H_3PW_(12)O_(40)/SiO_2复合杂多酸催化合成乙酸正己酯 |
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| 引用本文： | 金烈,谭丽泉.纳米H_3PW_(12)O_(40)/SiO_2复合杂多酸催化合成乙酸正己酯[J].应用化工,2011(12):2179-2181,2192. |
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| 作者姓名： | 金烈 谭丽泉 |
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| 作者单位： | 广东石油化工学院化学与生命科学学院; |
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| 摘 要： | 以纳米二氧化硅为载体,采用溶胶-凝胶法负载磷钨酸,以冰乙酸、正己醇为原料,纳米H3PW12O40/SiO2复合杂多酸为催化剂,考察原料配比、催化剂用量、反应时间、反应温度等因素对酯化反应的影响,同时也考察了催化剂循环使用的情况。实验表明,纳米H3PW12O40/SiO2复合杂多酸催化剂是合成乙酸正己酯的良好催化剂,其最优合成条件为:纳米H3PW12O40/SiO2复合杂多酸催化剂用量约为反应酸醇配料总质量的2.5%,酸醇配比为1∶1.4,反应时间1 h,反应温度130℃,产率达89.72%。
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| 关 键 词： | 纳米磷钨酸 乙酸正己酯 合成 |
Catalytic synthesis of hexyl by nano H_3PW_(12)O_(40)/SiO_2 heteropoly acid |
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| JIN Lie,TAN Li-quan.Catalytic synthesis of hexyl by nano H_3PW_(12)O_(40)/SiO_2 heteropoly acid[J].Applied chemical industry,2011(12):2179-2181,2192. |
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| Authors: | JIN Lie TAN Li-quan |
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| Affiliation: | JIN Lie,TAN Li-quan(College of Chemistry and Life Sciences,Guangdong University of Petrochemical Technology,Maoming 525000,China) |
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| Abstract: | The effect of ratio of raw materials,amount of catalyst,reaction time,reaction temperature on esterification and the situation of catalyst reuse were investigated with nano-silica as carrier,acetic acid and n-hexanol as raw materials,by sol-gel method supported phosphotungstic acid,nano H3PW12O40/SiO2 heteropoly acid as catalyst.Experiment showed that the nano H3PW12O40/SiO2 was the good catalyst for synthesis of hexyl acetate.The optimal conditions were as follows:catalyst amount 2.5% of total amount of ac... |
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| Keywords: | nanophosphotungstic acid hexyl acetate synthesis |
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