Details
| Original language | English |
|---|---|
| Pages (from-to) | 2262-2269 |
| Number of pages | 8 |
| Journal | Chemistry of Materials |
| Volume | 23 |
| Issue number | 8 |
| Early online date | 22 Mar 2011 |
| Publication status | Published - 26 Apr 2011 |
Abstract
A highly oriented zeolitic imidazolate framework 8 (ZIF-8) composite membrane was prepared by seeding and secondary growth. By dip-coating, preformed ZIF-8 nanocrystals were attached to the surface of a porous α-alumina support using polyethyleneimine as the coupling agent. After solvothermal treatment, a continuous and well-intergrown ZIF-8 layer was obtained. X-ray diffraction analysis of the membrane showed preferred orientation of the {100} plane parallel to the support. Further time-dependent investigations by scanning and transmission electron microscopy as well as X-ray diffraction indicated that the preferred orientation develops during an evolutionary growth process. In gas mixture permeation experiments, the membrane showed good performance in H2/hydrocarbon separation. A sharp molecular sieve separation is observed for an equimolar H2/C3H8 mixture with a separation factor above 300.
Keywords
- membrane, Metal-organic frameworks, oriented growth, zeolitic imidazolate frameworks
ASJC Scopus subject areas
- Chemistry(all)
- General Chemistry
- Chemical Engineering(all)
- General Chemical Engineering
- Materials Science(all)
- Materials Chemistry
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In: Chemistry of Materials, Vol. 23, No. 8, 26.04.2011, p. 2262-2269.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Oriented zeolitic imidazolate framework-8 membrane with sharp H 2/C3H8 molecular sieve separation
AU - Bux, Helge
AU - Feldhoff, Armin
AU - Cravillon, Janosch
AU - Wiebcke, Michael
AU - Li, Yan Shuo
AU - Caro, Juergen
PY - 2011/4/26
Y1 - 2011/4/26
N2 - A highly oriented zeolitic imidazolate framework 8 (ZIF-8) composite membrane was prepared by seeding and secondary growth. By dip-coating, preformed ZIF-8 nanocrystals were attached to the surface of a porous α-alumina support using polyethyleneimine as the coupling agent. After solvothermal treatment, a continuous and well-intergrown ZIF-8 layer was obtained. X-ray diffraction analysis of the membrane showed preferred orientation of the {100} plane parallel to the support. Further time-dependent investigations by scanning and transmission electron microscopy as well as X-ray diffraction indicated that the preferred orientation develops during an evolutionary growth process. In gas mixture permeation experiments, the membrane showed good performance in H2/hydrocarbon separation. A sharp molecular sieve separation is observed for an equimolar H2/C3H8 mixture with a separation factor above 300.
AB - A highly oriented zeolitic imidazolate framework 8 (ZIF-8) composite membrane was prepared by seeding and secondary growth. By dip-coating, preformed ZIF-8 nanocrystals were attached to the surface of a porous α-alumina support using polyethyleneimine as the coupling agent. After solvothermal treatment, a continuous and well-intergrown ZIF-8 layer was obtained. X-ray diffraction analysis of the membrane showed preferred orientation of the {100} plane parallel to the support. Further time-dependent investigations by scanning and transmission electron microscopy as well as X-ray diffraction indicated that the preferred orientation develops during an evolutionary growth process. In gas mixture permeation experiments, the membrane showed good performance in H2/hydrocarbon separation. A sharp molecular sieve separation is observed for an equimolar H2/C3H8 mixture with a separation factor above 300.
KW - membrane
KW - Metal-organic frameworks
KW - oriented growth
KW - zeolitic imidazolate frameworks
UR - http://www.scopus.com/inward/record.url?scp=79955052507&partnerID=8YFLogxK
U2 - 10.1021/cm200555s
DO - 10.1021/cm200555s
M3 - Article
AN - SCOPUS:79955052507
VL - 23
SP - 2262
EP - 2269
JO - Chemistry of Materials
JF - Chemistry of Materials
SN - 0897-4756
IS - 8
ER -