| Hβ沸石催化合成缩醛(酮) |
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| 引用本文： | 梁学正,于心玉,彭惠琦,高珊,杨建国,何鸣元.Hβ沸石催化合成缩醛(酮)[J].石油化工,2005,34(11):1083-1085. |
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| 作者姓名： | 梁学正 于心玉 彭惠琦 高珊 杨建国 何鸣元 |
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| 作者单位： | 华东师范大学,化学系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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| 基金项目： | 国家自然科学基金项目(G2000048)，上海科学技术发展基金项目(03DJ14005) |
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| 摘 要： | 以Hβ沸石为催化剂,研究了环己酮、丁酮、丙酮、丙醛、丁醛、异丁醛、戊醛、异戊醛、正辛醛、苯甲醛十种醛(酮)与乙二醇的缩合反应。系统考察了反应时间、醛(酮)与醇的配比、Hβ沸石的用量及催化剂重复使用等因素对缩合反应的影响,优化了反应条件。实验结果表明,在醛(酮)与乙二醇摩尔比为1∶1.2、催化剂用量(0.1m ol醛(酮))为0.2g、反应时间2h的条件下,大多数醛(酮)转化率可达90%以上,缩醛(酮)选择性可达98%以上。证明Hβ沸石对该缩合反应有较高的催化活性和选择性。
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| 关 键 词： | β沸石 醛 酮 乙二醇 合成 催化剂 缩醛 缩酮 |
| 文章编号： | 1000-8144(2005)11-1083-04 |
| 修稿时间： | 2005年5月1日 |
Synthesis of Acetals or Ketals over Zeolite Hβ Catalyst |
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| Liang Xuezheng,Yu Xinyu,Peng Huiqi,Gao Shan,Yang Jianguo,He Mingyuan.Synthesis of Acetals or Ketals over Zeolite Hβ Catalyst[J].Petrochemical Technology,2005,34(11):1083-1085. |
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| Authors: | Liang Xuezheng Yu Xinyu Peng Huiqi Gao Shan Yang Jianguo He Mingyuan |
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| Abstract: | The acetalization and ketalization of various aldehydes or ketones,namely cyclohexanone,butanone,acetone,propionaldehyde,butyraldehyde,isobutyraldehyde,valeraldehyde,isopentyl aldehyde,octyl aldehyde,and benzaldehyde,with glycol on zeolite Hβ catalyst were studied.Effects of reaction conditions,namely reaction time,mole ratio of aldehydes or ketones to glycol,and catalyst doasge,on reation were investigated.Zeolite Hβ was an efficient catalyst for acetalization and ketalization with high conversion and selectivity under mild reaction conditions.Optimal reaction conditions were:mole ratio of aldehydes or ketones to glycol 1 ∶1.2,catalyst dosage(1mol aldehydes or ketones)2g,and reaction time 2h.Under optimal reaction conditions,conversion of aldehydes or ketones and selectivity of acetals or ketals were more than 90% and 98%,respectively. |
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| Keywords: | zeolite β aldehyde ketone glycol synthesis catalyst acetal ketal |
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