Details
| Original language | English |
|---|---|
| Pages (from-to) | 174-181 |
| Number of pages | 8 |
| Journal | Journal of membrane science |
| Volume | 494 |
| Early online date | 29 Jul 2015 |
| Publication status | Published - 15 Nov 2015 |
Abstract
A seeding-free synthesis strategy was developed for the preparation of dense and phase-pure zeolite FAU membranes through mussel-inspired polydopamine (PDA) modification of porous Al2O3 tubes. Zeolite FAU nutrients can be attracted and bound to the support surface via the formation of strong non-covalent and covalent chemical bonds, thus promoting the nucleation and growth of uniform, well-intergrown and phase-pure zeolite FAU membranes. The SEM and XRD characterizations demonstrate that a relative thin but dense and pure-phase zeolite FAU membrane with a thickness of about 2.3μm can be obtained on the PDA-modified Al2O3 tube after crystallization at 75°C for 24h, and no visible cracks, pinholes or other defects are observed on the membrane layer. The zeolite FAU membrane prepared at 75°C for 24h was evaluated in single gas permeation and mixed gas separation. For binary mixtures at 50°C and 1bar, the mixture separation factors of H2/CH4 and H2/C3H8 are 9.9 and 127.7, respectively, which are much higher than the corresponding Knudsen coefficients. And relative high H2 permeance of about 1.9×10-7molm-2s-1Pa-1 can be obtained through the FAU membrane due to the thin layer and the relative wide pore size of 0.74nm, demonstrating a viable direction for promising application of FAU membranes in hydrogen purification and separation.
Keywords
- Gas separation, Molecular sieve membrane, Polydopamine modification, Zeolite FAU membrane
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Biochemistry
- Materials Science(all)
- General Materials Science
- Chemistry(all)
- Physical and Theoretical Chemistry
- Chemical Engineering(all)
- Filtration and Separation
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In: Journal of membrane science, Vol. 494, 15.11.2015, p. 174-181.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Facile synthesis of zeolite FAU molecular sieve membranes on bio-adhesive polydopamine modified Al2O3 tubes
AU - Zhou, Chen
AU - Yuan, Chenfang
AU - Zhu, Yaqiong
AU - Caro, Jürgen
AU - Huang, Aisheng
PY - 2015/11/15
Y1 - 2015/11/15
N2 - A seeding-free synthesis strategy was developed for the preparation of dense and phase-pure zeolite FAU membranes through mussel-inspired polydopamine (PDA) modification of porous Al2O3 tubes. Zeolite FAU nutrients can be attracted and bound to the support surface via the formation of strong non-covalent and covalent chemical bonds, thus promoting the nucleation and growth of uniform, well-intergrown and phase-pure zeolite FAU membranes. The SEM and XRD characterizations demonstrate that a relative thin but dense and pure-phase zeolite FAU membrane with a thickness of about 2.3μm can be obtained on the PDA-modified Al2O3 tube after crystallization at 75°C for 24h, and no visible cracks, pinholes or other defects are observed on the membrane layer. The zeolite FAU membrane prepared at 75°C for 24h was evaluated in single gas permeation and mixed gas separation. For binary mixtures at 50°C and 1bar, the mixture separation factors of H2/CH4 and H2/C3H8 are 9.9 and 127.7, respectively, which are much higher than the corresponding Knudsen coefficients. And relative high H2 permeance of about 1.9×10-7molm-2s-1Pa-1 can be obtained through the FAU membrane due to the thin layer and the relative wide pore size of 0.74nm, demonstrating a viable direction for promising application of FAU membranes in hydrogen purification and separation.
AB - A seeding-free synthesis strategy was developed for the preparation of dense and phase-pure zeolite FAU membranes through mussel-inspired polydopamine (PDA) modification of porous Al2O3 tubes. Zeolite FAU nutrients can be attracted and bound to the support surface via the formation of strong non-covalent and covalent chemical bonds, thus promoting the nucleation and growth of uniform, well-intergrown and phase-pure zeolite FAU membranes. The SEM and XRD characterizations demonstrate that a relative thin but dense and pure-phase zeolite FAU membrane with a thickness of about 2.3μm can be obtained on the PDA-modified Al2O3 tube after crystallization at 75°C for 24h, and no visible cracks, pinholes or other defects are observed on the membrane layer. The zeolite FAU membrane prepared at 75°C for 24h was evaluated in single gas permeation and mixed gas separation. For binary mixtures at 50°C and 1bar, the mixture separation factors of H2/CH4 and H2/C3H8 are 9.9 and 127.7, respectively, which are much higher than the corresponding Knudsen coefficients. And relative high H2 permeance of about 1.9×10-7molm-2s-1Pa-1 can be obtained through the FAU membrane due to the thin layer and the relative wide pore size of 0.74nm, demonstrating a viable direction for promising application of FAU membranes in hydrogen purification and separation.
KW - Gas separation
KW - Molecular sieve membrane
KW - Polydopamine modification
KW - Zeolite FAU membrane
UR - http://www.scopus.com/inward/record.url?scp=84938840754&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2015.07.045
DO - 10.1016/j.memsci.2015.07.045
M3 - Article
AN - SCOPUS:84938840754
VL - 494
SP - 174
EP - 181
JO - Journal of membrane science
JF - Journal of membrane science
SN - 0376-7388
ER -