Influence of the Si/Al ratio on the separation properties of SSZ-13 zeolite membranes

被引：110
作者：
Kosinov, Nikolay [1 ]
Auffret, Clement [1 ]
Borghuis, Gerard J. [1 ]
Sripathi, Venkata G. P. [1 ]
Hensen, Emiel J. M. [1 ]
机构：
[1] Eindhoven Univ Technol, Lab Inorgan Mat Chem, Schuit Inst Catalysis, NL-5600 MB Eindhoven, Netherlands
来源：
JOURNAL OF MEMBRANE SCIENCE | 2015年 / 484卷
关键词：
SSZ-13; membranes; Zeolite membranes; Si/Al ratio; CO2; separation; Pervaporation; MFI MEMBRANES; PERMEATION PROPERTIES; PERFORMANCE; PERVAPORATION; DEHYDRATION; ADSORPTION; CHABAZITE; WATER; LTA;
D O I：
10.1016/j.memsci.2015.02.044
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
SSZ-13 (CHA) zeolite membranes supported by u-alumina hollow fibers were prepared by a hydrothermal secondary growth method. The gel Si/Al ratio was varied between 5 and 100. The water adsorption depended strongly on the Si/Al ratio. Comparatively, ethanol adsorption varied less with membrane hydrophobicity. Consistent with these trends, low-silica membranes showed good performance in the pervaporative dehydration of ethanol/water mixtures. On contrary, high-silica membranes were found to be more effective for CO2/CH4 equimolar gas mixture separation. Together with increasing framework polarity, the concentration of non-zeolitic pathways (intercrystalline defects) increased with the Al content. The net effect of the influence of membrane polarity and defect density makes low-silica SSZ-13 water-selective membranes for alcohol/water pervaporation and high-silica SSZ-13 promising CO2-selective membranes in gas separation (CO2/CH4). (C) 2015 Elsevier B.V. All rights reserved
引用
收藏
页码：140 / 145
页数：6
相关论文
共 43 条
[1]   Fluorescence confocal optical microscopy imaging of the grain boundary structure of zeolite MFI membranes made by secondary (seeded) growth [J].
Bonilla, G ;
Tsapatsis, M ;
Vlachos, DG ;
Xomeritakis, G .
JOURNAL OF MEMBRANE SCIENCE, 2001, 182 (1-2) :103-109
[2]   Fundamentals and applications of pervaporation through zeolite membranes [J].
Bowen, TC ;
Noble, RD ;
Falconer, JL .
JOURNAL OF MEMBRANE SCIENCE, 2004, 245 (1-2) :1-33
[3]   Why is it so extremely difficult to prepare shape-selective Al-rich zeolite membranes like LTA and FAU for gas separation? [J].
Caro, J. ;
Albrecht, D. ;
Noack, M. .
SEPARATION AND PURIFICATION TECHNOLOGY, 2009, 66 (01) :143-147
[4]   Zeolite membranes - Recent developments and progress [J].
Caro, Juergen ;
Noack, Manfred .
MICROPOROUS AND MESOPOROUS MATERIALS, 2008, 115 (03) :215-233
[5]   The hydrothermal synthesis of zeolites: Precursors, intermediates and reaction mechanism [J].
Cundy, CS ;
Cox, PA .
MICROPOROUS AND MESOPOROUS MATERIALS, 2005, 82 (1-2) :1-78
[6]   Length exclusion in the adsorption of chain molecules on chabazite type zeolites [J].
Daems, Inge ;
Singh, Ranjeet ;
Baron, Gino ;
Denayer, Joeri .
CHEMICAL COMMUNICATIONS, 2007, (13) :1316-1318
[7]   Cage and Window Effects in the Adsorption of n-Alkanes on Chabazite and SAPO-34 [J].
Denayer, Joeri F. A. ;
Devriese, Lisa I. ;
Couck, Sarah ;
Martens, Johan ;
Singh, Ranjeet ;
Webley, Paul A. ;
Baron, G. V. .
JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (42) :16593-16599
[8]   Single parameter synthesis of high silica CHA zeolites from fluoride media [J].
Eilertsen, Einar A. ;
Arstad, Bjornar ;
Svelle, Stian ;
Lillerud, Karl P. .
MICROPOROUS AND MESOPOROUS MATERIALS, 2012, 153 :94-99
[9]   Separating molecules by size in SAPO-34 membranes [J].
Funke, Hans H. ;
Chen, Michael Z. ;
Prakash, Aniruddh N. ;
Falconer, John L. ;
Noble, Richard D. .
JOURNAL OF MEMBRANE SCIENCE, 2014, 456 :185-191
[10]   Practical Approach to Zeolitic Membranes and Coatings: State of the Art, Opportunities, Barriers, and Future Perspectives [J].
Gascon, Jorge ;
Kapteijn, Freek ;
Zornoza, Beatriz ;
Sebastian, Victor ;
Casado, Clara ;
Coronas, Joaquin .
CHEMISTRY OF MATERIALS, 2012, 24 (15) :2829-2844
12345