| KHSO_4催化合成甘油类缩醛(酮)的研究 |
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| 引用本文： | 梁学正,高珊,于心玉,刘彩华,杨建国.KHSO_4催化合成甘油类缩醛(酮)的研究[J].应用化工,2006,35(3):180-182. |
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| 作者姓名： | 梁学正 高珊 于心玉 刘彩华 杨建国 |
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| 作者单位： | 华东师范大学,上海市绿色化学与化工过程绿色化重点实验室,上海,200062 |
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| 摘 要： | 研究了在KHSO4催化下,丙三醇与环己酮、丁酮、丙酮、丙醛、丁醛、异丁醛、戊醛、异戊醛、正辛醛、二苯甲酮、苯甲醛等十余种醛(酮)的缩合反应。系统考察了反应时间、醛(酮)与醇的配比、KHSO4的用量及催化剂重复使用等因素对反应的影响,优化了反应条件。结果表明,当醛(酮)与丙三醇摩尔比为1∶1.2,催化剂用量为2 g/1mol醛(酮),反应2 h,转化率可达90%以上,选择性可达95%以上。证明KHSO4对该缩合反应有较好的催化活性和选择性。
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| 关 键 词： | KHSO4 缩醛(酮) 丙三醇 合成 催化 |
| 文章编号： | 1671-3206(2006)03-0180-03 |
| 收稿时间： | 2005-12-30 |
| 修稿时间： | 2005年12月30 |
Study on catalytic synthesis of acetals(ketals) by KHSO4 |
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| LIANG Xue-zheng,GAO Shan,YU Xin-yu,LIU Cai-hua,YANG Jian-guo.Study on catalytic synthesis of acetals(ketals) by KHSO4[J].Applied chemical industry,2006,35(3):180-182. |
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| Authors: | LIANG Xue-zheng GAO Shan YU Xin-yu LIU Cai-hua YANG Jian-guo |
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| Affiliation: | Shanghai Key Laboratory of Green Chemistry and Chemical Process, East China Normal University, Shanghai 200062, China |
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| Abstract: | The acetalization and ketalization of various aldehydes and ketones with glycerol by using(KHSO_4) as catalyst were studied.Effect of reaction time,mole ratio of reactants and amount of catalyst on yield of acetals(ketals) were investigated.Results showed that KHSO_4 was an efficient catalyst for the acetalization and ketalization with high conversion and selectivity in mild conditions.The optimum reaction condition:mole ratio of aldehydes and ketones to glycerol was(1∶1.2),catalyst amount was 2 g/1mol aldehydes or ketones,reaction time was 2 h.Under the condition,the conversion was over 90% and selectivity was over 95%. |
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| Keywords: | KHSO4 |
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