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| 浓硫酸改性煤基活性炭催化合成丙二酸二丁酯 | |
| 引用本文： | 田菊梅,李冰,丁淑娟,戴遥龙,刘万毅. 浓硫酸改性煤基活性炭催化合成丙二酸二丁酯[J]. 精细石油化工, 2007, 24(6): 48-50 |
| 作者姓名： | 田菊梅 李冰 丁淑娟 戴遥龙 刘万毅 |
| 作者单位： | 宁夏大学化学化工学院能源化工重点实验室,宁夏,银川,750021;宁夏产品质量监督检验站,宁夏,银川,750008;宁夏大学化学化工学院能源化工重点实验室,宁夏,银川,750021 |
| 基金项目： | 国家973前期预研项目(2006CB708606)，宁夏自然科学基金项目(2004-ZD01) |
| 摘 要： | 以浓硫酸改性煤基活性炭为催化剂,丙二酸和正丁醇为原料合成了丙二酸二丁酯,考察了醇酸物质的量比、催化剂用量、反应时间等因素对酯化率的影响。最佳工艺条件为:丙二酸50 mmol,n(酸):n(醇)=1:2.5,催化剂用量0.8g,反应时间1.5h,酯化率达99.0%。催化剂可回收使用,具有较高的催化活性 |
| 关 键 词： | 固体酸 浓硫酸改性煤基活性炭 丙二酸二丁酯 催化酯化 |
| 收稿时间： | 2007-07-20 |
| 修稿时间： | 2007-11-10 |
SYNTHESIS OF DIBUTYLMALONATE CATALYZED BY CONCENTRIC SULPHURIC ACID MODIFIED ACTIVATED CARBON SOLID ACID |
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| Tian Jumei,Li Bing,Ding Shujuan,Dai Yaolong,Liu Wanyi. SYNTHESIS OF DIBUTYLMALONATE CATALYZED BY CONCENTRIC SULPHURIC ACID MODIFIED ACTIVATED CARBON SOLID ACID[J]. Speciality Petrochemicals, 2007, 24(6): 48-50 | |
| Authors: | Tian Jumei Li Bing Ding Shujuan Dai Yaolong Liu Wanyi |
| Abstract: | Dibutylmalonate was synthesized with the modified coal based activated charcoal as the cata- lyst,malonic acid and the normal butyl alcohol as the raw materials.The influencing factors such as hydroxy-acid molar ratios,catalyst amount,reaction time,etc,were investigated.Under the follow- ing optimum conditions:the hydroxy-acid molar ratio=2.5:1;0.8 g catalyst;reaction time 90 rain,the esterification extent reached above 99.0%.The results showed that the catalyst had high ac- tivity,can be easily obtained and is environmently friendly. |
| Keywords: | solid acid concentric sulphuric acid modified activated carbon dibutylmalonate catalyze esterification |
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