Chinese Journal of Catalysis

Chinese Journal of Catalysis ›› 2007, Vol. 28 ›› Issue (9): 758-760.

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Preparation and Catalytic Performance of Zeolite Layer in Microchannels of a Microreactor by an on-Site Flow Synthesis Method

CAI Hongli1, ZHANG Xiongfu1*, LIU Haiou1, YEUNG King Lun2   

  1. 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
  • Received:2007-09-25 Online:2007-09-25 Published:2011-09-28

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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.

Key words: microreactor, NaX zeolite, zeolite membrane, coating, Knoevenagel condensation