高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (3): 356.

• 研究简报 • 上一篇    下一篇

新型MCM-41-β-沸石中孔-微孔复合分子筛

郭万平, 黄立民, 陈海鹰, 李全芝   

  1. 复旦大学化学系, 上海 200433
  • 收稿日期:1998-02-04 出版日期:1999-03-24 发布日期:1999-03-24
  • 通讯作者: 李全芝
  • 作者简介:郭万平,男,29岁,硕士
  • 基金资助:

    国家自然科学重点基金(批准号:29733070)

A Novel MCM-41-β-zeolite Composite Molecular Sieve with Mesoporous and Microporous Structure

GUO Wan-Ping, HUANG Li-Min, CHEN Hai-Ying, LI Quan-Zhi   

  1. Department of Chemistry, Fudan University, Shanghai, 200433
  • Received:1998-02-04 Online:1999-03-24 Published:1999-03-24

摘要: MCM-41是1992年由Mobil公司首次合成,具有可调的规整孔道结构,孔径大小为1.6~10nm的六方中孔分子筛[1,2],β-沸石是具有三维十二元环孔道,一条线性通道孔径为0.57nm×0.75nm,另一条由两种线性通道相交形成的弯曲通道.

关键词: MCM-41-&beta, -沸石, 复合分子筛, 合成, 表征

Abstract: MCM-41-β-zeolite, a new type of molecular sieve with meso-microporous composite structure was synthesized hydrothermally by using cetyltrimethylammonium bromide and tetraethylammonium hydroxide as the template. The structure and property of the molecular sieve were studied by means of XRD, SEM, DTG, FTIRand probe reaction teachniques. The results show that the composite molecular sieve contains stable hexagonal mesoporous structure and the microporous structure of β-zeolite. It appears in globular particles with loose surface and the results of DTG and FTIR exhibit that the meso-microporous composite molecular sieve is different from the mechanical mixture of MCM-41 and β-zeolites. Compared with the mechanical mixture of MCM-41 and β-zeolites, MCM-41-β-zeolite has a much higher hydrocracking activity for n-heptane.

Key words: MCM-41-β-zeolite, Composite molecular sieve, Synthesis, Characterization

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