Acta Phys. -Chim. Sin. ›› 2003, Vol. 19 ›› Issue (02): 167-170.doi: 10.3866/PKU.WHXB20030216

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High-Yield Synthesis of MCM-48 Using Mixed Surfactants and Adjusting pH Route

Zhai Shang-Ru;Pu Min;Zhang Ye;Wu Dong;Sun Yu-Han   

  1. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001
  • Received:2002-05-07 Revised:2002-08-05 Published:2003-02-15
  • Contact: Wu Dong E-mail:wudong@public.ty.sx.cn

Abstract: Using mixed surfactants cetyltrimethylammonium bromide (CTAB) and Triton X-100 (TX-100) as co-template and tetraethylorthosilicate (TEOS) as silica source,MCM-48 molecular sieves were hydrothermally prepared. The yields of MCM-48 molecular sieves could be considerably increased by adjusting pH of the solutions which had been statically crystallized for three days, at the same time the utilizing efficiency of the mixed surfactants was much higher than that of only CTAB as template.

Key words: MCM-48 molecular sieve, Yields, Mixed surfactan