物理化学学报 >> 2003, Vol. 19 >> Issue (02): 167-170.doi: 10.3866/PKU.WHXB20030216

研究简报 上一篇    下一篇

合成高产率分子筛MCM-48

翟尚儒;蒲敏;张晔;吴东;孙予罕   

  1. 中国科学院山西煤炭化学研究所煤转化国家重点实验室,太原 030001
  • 收稿日期:2002-05-07 修回日期:2002-08-05 发布日期:2003-02-15
  • 通讯作者: 吴东 E-mail:wudong@public.ty.sx.cn

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

摘要: 以十六烷基三甲基溴化铵(CTAB)和Triton X-100(TX-100)混合表面活性剂为模板剂,正硅酸乙酯(TEOS)为硅源,采用水热法合成了MCM-48分子筛.实验中发现,晶化3 d后用醋酸调节溶液pH值的方法可有效提高MCM-48分子筛的产率;同时采用混合表面活性剂使模板剂的利用效率达到了6.0 TEOS/1.0 Surf (摩尔比),并通过XRD、N2-吸附/脱附和TG-DSC等测试手段对产物的结构性能进行了表征.

关键词: MCM-48分子筛, 产率, 混合表面活性剂

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