| 固体酸SO42-/MoO3-TiO2-SiO2催化合成硬脂酸月桂酯 |
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| 引用本文： | 施宇,邓宝祥,王华锋.固体酸SO42-/MoO3-TiO2-SiO2催化合成硬脂酸月桂酯[J].天津工业大学学报,2011,30(1):66-69. |
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| 作者姓名： | 施宇 邓宝祥 王华锋 |
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| 作者单位： | 天津工业大学,环境与化学工程学院,天津,300160 |
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| 摘 要： | 以固体酸SO42-/MoO3-TiO2-SiO2为催化剂,以硬脂酸和月桂醇为原料催化合成硬脂酸月桂酯,得出最佳酯化反应条件为:醇酸物质的量比1.2∶1.0,催化剂的质量分数2%,反应时间3h,甲苯用量5mL,反应温度140℃.该反应的酯化率可达97.9%,且催化剂可重复使用.最后用FT-IR对催化剂SO42-/MoO3-TiO2-SiO2进行分析表征,表明SO42-在催化剂表面为螯合双配位吸附.
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| 关 键 词： | 固体酸SO42-/MoO3-TiO2-SiO2 硬脂酸月桂酯 酯化 |
Synthesis of dodecyl stearate catalyzed by solid acid SO42-/MoO3-TiO2-SiO2 |
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| SHI Yu,DENG Bao-xiang,WANG Hua-feng.Synthesis of dodecyl stearate catalyzed by solid acid SO42-/MoO3-TiO2-SiO2[J].Journal of Tianjin Polytechnic University,2011,30(1):66-69. |
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| Authors: | SHI Yu DENG Bao-xiang WANG Hua-feng |
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| Affiliation: | (School of Environment and Chemical Engineering,Tianjin Polytechnic University,Tianjin 300160,China) |
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| Abstract: | Dodecyl stearate was synthesized from stearic acid and dodecanol using solid acid SO42-/MoO3-TiO2-SiO2 as catalyst.The better process conditions of synthesis of dodecyl stearate were obtained with a alcohol to acid ratio of 1.2∶1.0,catalyst amount of 2%,methylbenzene amount of 5 mL,reaction time 3 h,reaction temperature 140 ℃ with the ratio of esterification 97.9%,and the catalyst could be used repeatedly.At last,the characteristic of solid acid SO42-/MoO3-TiO2-SiO2 is analyzed by using infrared absorption spectrum.The results show that the acid sites on SMT surface exhibited a chelating ligand structure. |
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| Keywords: | solid acid SO42-/MoO3-TiO2-SiO2 dodecyl stearate esterification |
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