| 5%ZnO-3%MgO/SiO2催化2-乙基己醇直接合成2-乙基己酸 |
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| 引用本文： | 严宏贵,章毅.5%ZnO-3%MgO/SiO2催化2-乙基己醇直接合成2-乙基己酸[J].广州化工,2012,40(15):122-123,138. |
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| 作者姓名： | 严宏贵 章毅 |
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| 作者单位： | 1. 贵州省黔西县水西中学,贵州黔西,551500
2. 西北大学化工学院,陕西西安,710069 |
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| 摘 要： | 采用等体积浸渍法制备了5%ZnO-3%MgO/SiO2催化剂,以纯氧为氧化剂,在常压下催化氧化2-乙基己醇直接合成2-乙基己酸,对该合成的催化剂用量、氧气流量、反应温度、反应时间等工艺条件进行了优化,确定了最佳工艺条件。结果表明,该合成的最佳工艺条件为:2-乙基己醇50 mL,催化剂用量2.5 g,氧气流量30 mL/min,反应温度125℃,反应时间9 h,在此最佳工艺条件下,2-乙基己醇转化率达63.6%,2-乙基己酸选择性可达75.4%。
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| 关 键 词： | 2-乙基己醇 2-乙基己酸 5%ZnO-3%MgO/SiO2 纯氧 |
Direct Synthesis of 2-ethylhexanoic Acid from 2-ethylhexanol Catalyzed by 5%ZnO-3%MgO/SiO_2 |
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| YAN Hong-gui,ZHANG Yi.Direct Synthesis of 2-ethylhexanoic Acid from 2-ethylhexanol Catalyzed by 5%ZnO-3%MgO/SiO_2[J].GuangZhou Chemical Industry and Technology,2012,40(15):122-123,138. |
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| Authors: | YAN Hong-gui ZHANG Yi |
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| Affiliation: | 1 Shuixi Middle School,Guizhou Qianxi 551500; 2 School of Chemical Engineering Northwest University,Shaanxi Xi＇an 710069,China) |
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| Abstract: | The catalyst of 5%ZnO-3%MgO/SiO2 was prepared by impregnation method.The pure oxygen as the oxidation,2-ethylhexanoic acid was synthesized directly from 2-ethylhexanol at atmospheric pressure.Catalyst dosage,oxygen flow,reaction temperature and time were optimized,and the best process condition was determined.The result indicated that the conversion of 2-ethylhexanol and the selectivity of 2-ethylhexanoic acid up to 63.6% and 75.4%,respectively were achieved under the following conditions that the 2-ethylhexanol dosage was 50 mL,the catalyst dosage was 2.5 g,the oxygen flow was 30 mL/min,reaction temperature was 125 ℃,and reaction time was 9 h. |
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| Keywords: | 2-ethylhexanol 2-ethylhexanoic acid 5％ZnO-3％MgO/SiO2 pure oxygen |
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