| SO_4~(2-)/La_2O_3-TiO_2-HZSM-5催化合成乙酸丁酯 |
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| 引用本文： | 陈淑芬,甘黎明,史文权.SO_4~(2-)/La_2O_3-TiO_2-HZSM-5催化合成乙酸丁酯[J].应用化工,2005,34(4):212-214. |
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| 作者姓名： | 陈淑芬 甘黎明 史文权 |
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| 作者单位： | 兰州石化职业技术学院,石油化学工程系,甘肃,兰州,730060 |
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| 基金项目： | 甘肃省科学技术厅基金攻关项目(2GS035A5200804) |
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| 摘 要： | 将SO42/TiO2-HZSM-5负载镧制备了新型催化剂SO42/La2O3-TiO2-HZSM-5,以乙酸和正丁醇的酯化反应为探针,考察了不同制备条件对催化剂性能的影响。结果表明:La3+浸渍浓度为0.07mol/L,经110℃烘干后于500℃焙烧3h所得催化剂活性最好。采用正交实验法对影响酯化反应的因素进行考察,最佳实验条件为n(醇)∶n(酸)=1.5∶1,反应时间2h,催化剂用量2%(总物料),酯化率可达97.8%。且该催化剂具有良好的重复使用和再生能力。
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| 关 键 词： | SO2/LaO-TiO-HZSM5 乙酸丁酯 催化活性 酯化率 |
| 文章编号： | 1671-3206(2005)04-0212-03 |
| 修稿时间： | 2005年3月1日 |
Synthesis of butyl acetate by SO42-/La2O3-TiO2-HZSM-5 |
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| CHEN Shu-fen,GAN Li-ming,SHI Wen-quan.Synthesis of butyl acetate by SO42-/La2O3-TiO2-HZSM-5[J].Applied chemical industry,2005,34(4):212-214. |
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| Authors: | CHEN Shu-fen GAN Li-ming SHI Wen-quan |
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| Abstract: | A new type catalyst with the composition of SO_4~(2-)/ TiO_2-HZSM-5 and added lanthanum was prepared,and the influences of preparation conditions on its catalytic properties were studied based on the esterification of acetic acid and n-butanol, it has the highest catalytic activity under the conditions of impregnation 0.07 mol/L La_2(SO_4)_3,dryed at 110℃,calcinations at 500℃ for (3 h) . The influence factors on esterification were investigated by orthogonal experiment.The best conditions are that the mole ratio of n(alcohol) to n(acid) is 1.5∶1 , reaction time is 2 h,catalyst amount is 2%(the total mass of reactants)and esterification yield of n-butyl acetate is about 97.8%. And the catalyst is reused and regenerated. |
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| Keywords: | SO_4~(2-)/La_2O_3-TiO_2-HZSM-5 butyl acetate catalytic activity esterification |
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