Acta Chimica Sinica ›› 2007, Vol. 65 ›› Issue (21): 2494-2498. Previous Articles     Next Articles



  1. (1上海大学化学系 上海 200444)
    (2复旦大学化学系 上海市分子催化与创新材料重点实验室 上海 200433)
  • 投稿日期:2007-03-21 修回日期:2007-06-08 发布日期:2007-11-14
  • 通讯作者: 龙英才

Control of Orientation in MEL Zeolite Film

DONG Jun-Ping1,2; XU Yin-Juan1; LONG Ying-Cai*,2   

  1. (1 Department of Chemistry, Shanghai University, Shanghai 200444)
    (2 Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200433)
  • Received:2007-03-21 Revised:2007-06-08 Published:2007-11-14
  • Contact: LONG Ying-Cai

MEL zeolite films with various orientations were prepared on the surface of single crystal silicon by a seeding method, and the influences of the synthesis conditions upon the orientation for the zeolite crystallites in the films were investigated. It suggests that the crystal orientation strongly depends on the water content in the reactants and the crystallization periods. The concentrated reactant in a shorter crystallization time forms favorably the zeolite film with (101) orientation, whereas the dilute reactant crystallizes the preferred zeolite film with (101) and (200) planes parallel to the support surface. The seed layer has no direct influence on the orientation of the zeolite film. The continuing growth of the seed layer forms a mono-layer zeolite film.

Key words: MEL, zeolite film, preferred growth, seed layer