物理化学学报 >> 2002, Vol. 18 >> Issue (03): 279-283.doi: 10.3866/PKU.WHXB20020319

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高表面积MCM-41的合成与性能

宋春敏;阎子峰;Max Lu   

  1. 石油大学重质油加工国家重点实验室，东营　257061;NanoMac Ceter, Department of Chemical Engineering, The University of Queensland, Brisbane　4072, Australia
  • 收稿日期:2001-07-30 修回日期:2001-11-05 发布日期:2002-03-15
  • 通讯作者: 阎子峰 E-mail:zfyancat@hdpu.edu.cn

Synthesis and Characterization of Supersurface MCM-41 Zeolites

Song Chun-Min;Yan Zi-Feng;Max Lu   

  1. State Key Laboratory for Heavy Oil Processing, University of Petroleum,Dongying　257061;NanoMac Ceter, Department of Chemical Engineering, The University of Queensland, Brisbane　4072 Australia
  • Received:2001-07-30 Revised:2001-11-05 Published:2002-03-15
  • Contact: Yan Zi-Feng E-mail:zfyancat@hdpu.edu.cn

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摘要： 通过易于控制的手段，合成出了超高表面积的MCM41分子筛，并采用XRD、N2吸附脱附、热重差热分析、SEM等测试手段对合成样品进行分析表征，主要考察了晶化时间对分子筛表面积的影响.其XRD结果表明,合成的固体产物具有六方排列的孔道结构，结晶度高.氮吸附脱附实验表明，产物具有单一的孔径分布，其BET表面积可达1300 m2•g－1左右，合成样品的平均孔径约3.2 nm，适宜的晶化时间是50～100 h.热重分析表明，样品热稳定性好，吡啶升温脱附曲线表明合成的样品具有弱酸性.

关键词: MCM-41, 介孔分子筛, 合成, 结构表征

Abstract: The mesoporous MCM41 molecular sieves with superhigh surface areas were hydrothermally synthesized by means of a novel surfactant. XRD, nitrogen adsorption,SEM and pyridine TGDTA were used to characterize the crystallinity,surface area and mesoporosity and acidity of the synthesized samples. The XRD results showed that MCM41 with high crystallinity. N2 adsorption indicated that BET surface area is 1300 m2•g－1. Pyridine TPD spectra of the samples showed that the acidity of MCM41 is a weak acid. The samples have high thermal stability. The optimum crystallization time is 50～100 h.

Key words: MCM-41, Mesopore zeolite, Synthesis, Characterization