CRCU

Chemical Research in Chinese Universities ›› 2002, Vol. 18 ›› Issue (3): 242-245.

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Studies on the Surface Properties of MCM-41

HE Jing, DUAN Xue, EVANS D. G., LI Cheng-yue   

  1. The Key Laboratory of Science and Technology of Controllable Chemical Reactions, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, P. R. China
  • Received:2001-06-07 Online:2002-08-24 Published:2011-08-04
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.20173003) and State Key Basic Research Project of China(No.2000048009)

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Abstract: MCM-41 materials with a well-ordered long-range structure, a large pore size and a high surface area have been synthesized. Their surface properties including the number and the nature of the surface hydroxyl groups and surface hydrophobicity/hydrophilicity have been investigated by means of 29Si MAS NMR and FT-IR spectra and TPD of probe molecules. The results clearly show that the surface of MCM-41 has an abundance of acidic silanol groups, and that the hydrophobicity/hydrophilicity can be modified by the introduction of Al and transition metals Ti, Cr, Ni and Fe into it.

Key words: Hydroxyl group, Hydrophobicity/Hydrophilicity, MCM-41