Synthesis of Micro/meso-porous Composite Molecular Sieve L/MCM-41with lon Exchange
[1]WEI Dongyan,WANG Chunfang,CHEN Yiliang,et al.Synthesis of Micro/meso-porous Composite Molecular Sieve L/MCM-41with lon Exchange[J].Journal of Zhengzhou University (Engineering Science),2012,33(01):51-54.[doi:10.3969/j.issn.1671-6833.2012.01.013]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
33
Number of periods:
2012 01
Page number:
51-54
Column:
Public date:
2012-01-10
- Title:
- Synthesis of Micro/meso-porous Composite Molecular Sieve L/MCM-41with lon Exchange
- CLC:
- TQ17TQ424. 25
- Abstract:
- Micro/meso-porous composite molecular sieve l/MCM4l was synthesized with embedding methodand ion exchange using cetyl trimethyl ammonium bromide ( CTAB) as template and it was confirmed by heingcharacterized by X-ray diflraction( XRD), seanning electron microscopy( SEM), transmission electronic mi.croscopy(TEM) and N, absorption/ desorption. The results indicated that the pore diameter of L/MCM-41composite molecular sieve was 3. 04 nm which was bigger than that of microporous molecular sieves. Comparedwith MCM -41 molecular sieve synthesized by ordinary hydrothermal method: 1 )the pore wall thickness in-creased from 0. $5 nm to 1.81 nm ; 2 ) The hydrothermal stability improved signifcantly, the structure couldkeep unchanged for &h, rising by 6 h, at 100 ℃, Compared with zeolite L,the content of K* decreased from18.42% 0.98%.
- References:
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Last Update:
1900-01-01