催化学报

催化学报 ›› 2006, Vol. 27 ›› Issue (6): 506-510.

• 研究论文 • 上一篇    下一篇

用水热法在铁铬铝合金片上原位合成MCM-22沸石膜

邹新华,李英霞,曾建令,陈标华   

  1. 北京化工大学化工资源有效利用国家重点实验室, 北京 100029
  • 收稿日期:2006-06-25 出版日期:2006-06-25 发布日期:2010-08-28

In Situ Synthesis of MCM-22 Zeolite Membrane on an Alloy Foil by Hydrothermal Method

ZOU Xinhua, LI Yingxia*, ZENG Jianling, CHEN Biaohua   

  1. State Key Laboratory of Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
  • Received:2006-06-25 Online:2006-06-25 Published:2010-08-28

PDF

853

被引次数

8

摘要： 采用水热法在铁铬铝合金片载体上原位合成了MCM-22沸石膜,并采用X射线衍射和扫描电子显微镜对沸石膜进行了表征,探讨了成膜的影响因素. 结果表明,载体预处理条件对合成沸石膜的品质有较大的影响. 载体仅经碱处理后合成的沸石膜稀疏而不连续; 载体先经碱处理再经酸处理后可得到连续致密的沸石膜,且晶片取向均一; 载体预先涂覆Al2O3胶过渡层后制得的MCM-22沸石膜经超声波清洗后不会脱落,表明沸石膜与载体间的结合力增强. 此外,增大晶化母液量有利于沸石膜的生长.

关键词: 铁铬铝合金片, 水热法, MCM-22沸石膜, 合成

Abstract: The MCM-22 zeolite membrane was synthesized on an iron-chromium-aluminum alloy foil by the hydrothermal method and characterized by X-ray diffraction and scanning electron microscopy. The results showed that the surface properties of the support had an important effect on the formation of the MCM-22 zeolite membrane. The MCM-22 zeolite membrane grew much better on the alloy foil treated with acid. The precoating of Al2O3 colloid on the alloy foil could enhance the interaction between the MCM-22 zeolite membrane and the support. The amount of the mother liquid was also an important factor affecting the formation of the MCM-22 zeolite membrane, and a high quality MCM-22 zeolite membrane could be obatined with more mother liquid. If the mother liquid was not enough, there was no MCM-22 zeolite membrane formed.

Key words: iron-chromium-aluminum alloy foil, hydrothermal method, MCM-22 zeolite membrane, synthesis