Details
| Original language | English |
|---|---|
| Pages (from-to) | 57-64 |
| Number of pages | 8 |
| Journal | Journal of membrane science |
| Volume | 437 |
| Early online date | 6 Mar 2013 |
| Publication status | Published - 15 Jun 2013 |
Abstract
A seeding-free synthesis strategy was developed for the preparation of dense and phase-pure zeolite LTA membranes on 3-chloropropyltrimethoxysilane (CPTMS) functionalized supports. Through the functionalization of supports by using CPTMS, the nucleation and growth of a thin, well intergrown zeolite LTA membrane could be promoted on various porous supports such as Al2O3 disks and tubes, and TiO2 disks, as well as on dense supports such as stainless steel, PTFE, and glass disks. The SEM and XRD characterizations indicate that a relative thin but dense and phase-pure zeolite LTA membrane with a thickness of about 3.0μm can be formed on the porous Al2O3 and TiO2 disks by crystallization at 60°C for 24h, and no cracks, pinholes or other defects were observed in the membrane layer. The zeolite LTA membranes prepared on CPTMS-functionalized Al2O3 disks were evaluated in single gas permeation and mixed gas separation. It is found that the zeolite LTA membranes prepared on CPTMS-modified Al2O3 disks show molecular sieving in gas separation. For binary mixtures at 20°C and 1bar, the mixed gas separation factors of H2/CO2, H2/N2, H2/CH4, H2/C3H8 and H2/C3H6, are found to be 7.4, 6.8, 5.2, 15.3 and 36.8, which are higher than the corresponding Knudsen coefficients.
Keywords
- 3-Chloropropyltrimethoxysilane, Covalent linker, Gas separation, Molecular sieve membrane, Zeolite LTA membrane
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Biochemistry
- Materials Science(all)
- Chemistry(all)
- Physical and Theoretical Chemistry
- Chemical Engineering(all)
- Filtration and Separation
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In: Journal of membrane science, Vol. 437, 15.06.2013, p. 57-64.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Covalent synthesis of dense zeolite LTA membranes on various 3-chloropropyltrimethoxysilane functionalized supports
AU - Huang, Aisheng
AU - Liu, Qian
AU - Wang, Nanyi
AU - Tong, Xin
AU - Huang, Bingxin
AU - Wang, Meng
AU - Caro, Jürgen
PY - 2013/6/15
Y1 - 2013/6/15
N2 - A seeding-free synthesis strategy was developed for the preparation of dense and phase-pure zeolite LTA membranes on 3-chloropropyltrimethoxysilane (CPTMS) functionalized supports. Through the functionalization of supports by using CPTMS, the nucleation and growth of a thin, well intergrown zeolite LTA membrane could be promoted on various porous supports such as Al2O3 disks and tubes, and TiO2 disks, as well as on dense supports such as stainless steel, PTFE, and glass disks. The SEM and XRD characterizations indicate that a relative thin but dense and phase-pure zeolite LTA membrane with a thickness of about 3.0μm can be formed on the porous Al2O3 and TiO2 disks by crystallization at 60°C for 24h, and no cracks, pinholes or other defects were observed in the membrane layer. The zeolite LTA membranes prepared on CPTMS-functionalized Al2O3 disks were evaluated in single gas permeation and mixed gas separation. It is found that the zeolite LTA membranes prepared on CPTMS-modified Al2O3 disks show molecular sieving in gas separation. For binary mixtures at 20°C and 1bar, the mixed gas separation factors of H2/CO2, H2/N2, H2/CH4, H2/C3H8 and H2/C3H6, are found to be 7.4, 6.8, 5.2, 15.3 and 36.8, which are higher than the corresponding Knudsen coefficients.
AB - A seeding-free synthesis strategy was developed for the preparation of dense and phase-pure zeolite LTA membranes on 3-chloropropyltrimethoxysilane (CPTMS) functionalized supports. Through the functionalization of supports by using CPTMS, the nucleation and growth of a thin, well intergrown zeolite LTA membrane could be promoted on various porous supports such as Al2O3 disks and tubes, and TiO2 disks, as well as on dense supports such as stainless steel, PTFE, and glass disks. The SEM and XRD characterizations indicate that a relative thin but dense and phase-pure zeolite LTA membrane with a thickness of about 3.0μm can be formed on the porous Al2O3 and TiO2 disks by crystallization at 60°C for 24h, and no cracks, pinholes or other defects were observed in the membrane layer. The zeolite LTA membranes prepared on CPTMS-functionalized Al2O3 disks were evaluated in single gas permeation and mixed gas separation. It is found that the zeolite LTA membranes prepared on CPTMS-modified Al2O3 disks show molecular sieving in gas separation. For binary mixtures at 20°C and 1bar, the mixed gas separation factors of H2/CO2, H2/N2, H2/CH4, H2/C3H8 and H2/C3H6, are found to be 7.4, 6.8, 5.2, 15.3 and 36.8, which are higher than the corresponding Knudsen coefficients.
KW - 3-Chloropropyltrimethoxysilane
KW - Covalent linker
KW - Gas separation
KW - Molecular sieve membrane
KW - Zeolite LTA membrane
UR - http://www.scopus.com/inward/record.url?scp=84875793072&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2013.02.058
DO - 10.1016/j.memsci.2013.02.058
M3 - Article
AN - SCOPUS:84875793072
VL - 437
SP - 57
EP - 64
JO - Journal of membrane science
JF - Journal of membrane science
SN - 0376-7388
ER -