| 微通道反应器内"就地"合成沸石膜催化层及其性能 |
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| 引用本文： | 蔡红丽,张雄福,刘海鸥,杨经伦.微通道反应器内"就地"合成沸石膜催化层及其性能[J].催化学报,2007,28(9):758-760. |
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| 作者姓名： | 蔡红丽 张雄福 刘海鸥 杨经伦 |
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| 作者单位： | 1. 大连理工大学化工学院精细化工国家重点实验室,辽宁大连,116012
2. 香港科技大学化学工程系,香港九龙 |
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| 基金项目： | 教育部留学回国人员科研启动基金(教外司留[2004]527). |
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| 摘 要： | 采用简单、新颖的沸石粒子引入方法,将NaX沸石晶种引入不锈钢微反应器的微通道内,并用流动法"就地"直接在微通道内通过沸石生长形成NaX沸石膜层,经铯离子交换处理成为CsNaX催化层,用苯甲醛和氰基乙酸乙酯的Knoevenagel缩合反应评价了该催化层的催化性能.结果表明,微通道内形成的沸石膜层连续,均匀,具有良好的催化功能.微反应器内缩合反应的结果明显优于传统反应器.
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| 关 键 词： | 微反应器 NaX沸石 沸石膜 涂层 Knoevenagel缩合反应 |
| 文章编号： | 0253-9837（2007）09-0758-03 |
| 修稿时间： | 2007-04-10 |
Preparation and Catalytic Performance of Zeolite Layer in Microchannels of a Microreactor by an on-Site Flow Synthesis Method |
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| CAI Hongli,ZHANG Xiongfu,LIU Haiou,YEUNG King Lun.Preparation and Catalytic Performance of Zeolite Layer in Microchannels of a Microreactor by an on-Site Flow Synthesis Method[J].Chinese Journal of Catalysis,2007,28(9):758-760. |
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| Authors: | CAI Hongli ZHANG Xiongfu LIU Haiou YEUNG King Lun |
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| Institution: | 1. School of Chemical Engineering, State Key Laboratory of Fine Chemicals, Dalian University of Technology Dalian 116012, Liaoning , China ; 2 Department of Chemical Engineering, Hong Kong University of Science and Technology, Kowloon , Hong Kong , China |
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| Abstract: | A zeolite-based microreactor was fabricated and tested for Knoevenagel condensation between benzaldehyde and ethylcyanoacetate with a continuous CsNaX zeolite layer as the catalyst,which was prepared within the microreactor channel using a novel flow method.The method involved two-step procedures in which NaX zeolite seeds for the growth of zeolite layer were introduced onto the internal surface of the microchannel by using a seeding technique and then grew into a zeolite layer by an on-site flow hydrothermal treatment followed by ion-exchange with 0.5 mol/L CsNO3 solution.The zeolite-based microreactor showed higher catalytic activity for the reaction compared with the conventional batch reactor. |
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| Keywords: | microreactor NaX zeolite zeolite membrane coating Knoevenagel condensation |
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