| 固体超强酸S_2O_8~(2-)/TiO_2-Al_2O_3催化合成乙酸戊酯的动力学研究 |
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| 引用本文： | 杨呈祥,毛建华,乔志道. 固体超强酸S_2O_8~(2-)/TiO_2-Al_2O_3催化合成乙酸戊酯的动力学研究[J]. 应用化工, 2006, 35(9): 673-676 |
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| 作者姓名： | 杨呈祥 毛建华 乔志道 |
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| 作者单位： | 盐城师范学院,化学系,江苏,盐城,224002 |
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| 摘 要： | 研究了以固体超强酸S2O82-/TiO2-A l2O3为催化剂合成乙酸戊酯的反应,在反应温度分别为100,108,116℃下,测出合成乙酸戊酯的动力学方程参数,建立了动力学方程式,并与无催化剂酯化反应的活化能及动力学方程式进行了比较。结果表明,最佳合成条件为:醇酸摩尔比1.3∶1,催化剂用量1 g,带水剂用量10 mL。固体超强酸S2O82-/TiO2-A l2O3使反应活化能明显降低,是合成乙酸戊酯的有效催化剂。
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| 关 键 词： | 固体超强酸 乙酸戊酯 催化合成 动力学 活化能 |
| 文章编号： | 1671-3206(2006)09-0673-04 |
| 收稿时间： | 2006-06-03 |
| 修稿时间： | 2006-06-03 |
Research on the kinetics of the synthesis of amyl acetate with the catalyst of S2O82-/TiO2 -Al2O3 |
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| YANG Cheng-xiang,MAO Jian-hua,QIAO Zhi-dao. Research on the kinetics of the synthesis of amyl acetate with the catalyst of S2O82-/TiO2 -Al2O3[J]. Applied chemical industry, 2006, 35(9): 673-676 |
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| Authors: | YANG Cheng-xiang MAO Jian-hua QIAO Zhi-dao |
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| Affiliation: | Department of Chemistry, Yancheng Teachers College ,Yancheng 224002, China |
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| Abstract: | Synthesis of amyl acetate with the solid super acidic catalyst S_2O~(2-)_8/TiO_2-Al_2O_3 was investigated.The kinetic parameters of reaction were measured at 100℃,108℃ and 116℃ respectively and the kinetic equation was thus built,which were compared with those of the reaction without catalyst.The results showed that the optimum reaction conditions are n(amyl alcohol)∶n(acetic acid)=1.3∶1,the(amounts) of the catalyst and the water-taking reagent 1.0 g and 10 mL respectively.The activation energy of the reaction with solid super acidic catalyst is obviously lower than that of the reaction without catalyst,suggesting that S_2O~(2-)_8/TiO_2-Al_2O_3 is the effective catalyst of the synthesis of amyl acetate. |
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| Keywords: | solid superacid amyl acetate catalytic synthesis kinetic activation energy |
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