Pore size and surface chemistry effects on the transport of hydrophobic and hydrophilic solvents through mesoporous γ-alumina and silica MCM-48

被引:66
作者
Chowdhury, SR [1 ]
Schmuhl, R [1 ]
Keizer, K [1 ]
ten Elshof, JE [1 ]
Blank, DHA [1 ]
机构
[1] Univ Twente, MESA Res Inst, Dept Sci & Technol, Inorgan Mat Sci Grp, NL-7500 AE Enschede, Netherlands
关键词
membrane; gamma alumina; silica; MCM-48; permeability;
D O I
10.1016/j.memsci.2003.07.018
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The structural and solvent transport properties of supported mesoporous gamma-alumina and MCM-type silica membranes are reported. Templated mesoporous silica layers and powders were characterized by XRD, permporometry, XPS and BET measurements. The results indicate that the gamma-alumina membrane is similar to1 mum thick, while the silica membrane is similar to30 nm thick, has a pore size of 2.8-3.4 nm and possesses the MCM-48 structure. Pressure-driven solvent flow experiments on alpha-alumina supported gamma-alumina and MCM-48 membranes indicate that the permeabilities of the mesoporous layers depend on the chemical nature of the solvents. The permeability of hexane and toluene through gamma-alumina with 4.5-7.5 nm pores is lower than that of hydrophilic alcohols and water. The permeability of water and alcohols through MCM-48 appears to be affected by solvent-pore interactions on molecular scale. The MCM-48 layer has a higher permeability than gamma-alumina, which can be attributed to its much smaller thickness. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码:177 / 186
页数:10
相关论文
共 34 条
[1]   Simplified description of MCM-48 [J].
Anderson, MW .
ZEOLITES, 1997, 19 (04) :220-227
[2]   A NEW FAMILY OF MESOPOROUS MOLECULAR-SIEVES PREPARED WITH LIQUID-CRYSTAL TEMPLATES [J].
BECK, JS ;
VARTULI, JC ;
ROTH, WJ ;
LEONOWICZ, ME ;
KRESGE, CT ;
SCHMITT, KD ;
CHU, CTW ;
OLSON, DH ;
SHEPPARD, EW ;
MCCULLEN, SB ;
HIGGINS, JB ;
SCHLENKER, JL .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1992, 114 (27) :10834-10843
[3]   Performance of solvent-resistant membranes for non-aqueous systems: solvent permeation results and modeling [J].
Bhanushali, D ;
Kloos, S ;
Kurth, C ;
Bhattacharyya, D .
JOURNAL OF MEMBRANE SCIENCE, 2001, 189 (01) :1-21
[4]   PERMPOROMETRY STUDY ON THE SIZE DISTRIBUTION OF ACTIVE PORES IN POROUS CERAMIC MEMBRANES [J].
CAO, GZ ;
MEIJERINK, J ;
BRINKMAN, HW ;
BURGGRAAF, AJ .
JOURNAL OF MEMBRANE SCIENCE, 1993, 83 (02) :221-235
[5]   Development and comparative study of different nanofiltration membranes for recovery of highly charged large ions [J].
Chowdhury, SR ;
ten Elshof, JE ;
Benes, NE ;
Keizer, K .
DESALINATION, 2002, 144 (1-3) :41-46
[6]  
DELINT WBS, 2003, THESIS U TWENTE THE
[7]  
Edler KJ, 2001, INT REV PHYS CHEM, V20, P387
[8]   LIQUID TO SOLID-LIKE TRANSITIONS OF MOLECULARLY THIN-FILMS UNDER SHEAR [J].
GEE, ML ;
MCGUIGGAN, PM ;
ISRAELACHVILI, JN ;
HOMOLA, AM .
JOURNAL OF CHEMICAL PHYSICS, 1990, 93 (03) :1895-1906
[9]  
Honma I, 2000, ADV MATER, V12, P1529, DOI 10.1002/1521-4095(200010)12:20<1529::AID-ADMA1529>3.0.CO
[10]  
2-U