Dynamic Hydrothermal Synthesis of a b-Oriented MFI Zeolite Film

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• 作者：Xianming LI^a ; Zhengbao WANG^a ; ^{zbwang@zju.edu.cn} ; Jie ZHENG^a ; Shiqun SHAO^a ; Yinchao WANG^a ; Yushan YAN^a ; ^b
• 关键词：dynamic hydrothermal method ; b-oriented ; MFI zeolite ; zeolite film ; static hydrothermal method
• 刊名：Chinese Journal of Catalysis
• 出版年：2011
• 出版时间：January-February 2011
• 年：2011
• 卷：32
• 期：1
• 页码：217-223
• 全文大小：951 K

文摘

Continuous b-oriented MFI zeolite films were prepared on stainless steel substrates by dynamic hydrothermal synthesis using a rotating convection oven. The influences of rotation speed, crystallization temperature and crystallization time were studied. X-ray diffraction was used to identify the orientation of the zeolite films. Compared with the static method, a shorter synthesis time, a more uniform particle size distribution and better film orientation were observed for the dynamic method, and this is attributed to the low concentration and thermal gradients that exist in the bulk solution and to the washing action of the bulk solution toward the substrate surface.