High-Performance Randomly Oriented Zeolite Membranes Using Brittle Seeds and Rapid Thermal Processing

MFI zeolite membranes with high flux and high separation factors for xylene isomer separation were fabricated by combining several unique processing steps. These include 1) use of brittle seeds prepared by confined synthesis, 2) rubbing and leveling methods to obtain randomly oriented seed layers, 3...

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Published inAngewandte Chemie International Edition Vol. 49; no. 46; pp. 8699 - 8703
Main Authors Yoo, Won Cheol, Stoeger, Jared A., Lee, Pyung-Soo, Tsapatsis, Michael, Stein, Andreas
Format Journal Article
LanguageEnglish
Published Weinheim WILEY-VCH Verlag 08.11.2010
WILEY‐VCH Verlag
Subjects
hydrothermal synthesis
separation
thin films
zeolite membranes
zeolites
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Summary:MFI zeolite membranes with high flux and high separation factors for xylene isomer separation were fabricated by combining several unique processing steps. These include 1) use of brittle seeds prepared by confined synthesis, 2) rubbing and leveling methods to obtain randomly oriented seed layers, 3) secondary hydrothermal growth to produce thin zeolite films, and 4) rapid thermal processing to remove structure‐directing agents while minimizing crack formation (see picture; scale bar 500 nm).
Bibliography:Funding was provided by the NSF (mainly by CMMI-0707610 and in parts by DMR-0704312, DMR-0212302 and CBET-0522518). Parts of this work were carried out in the Institute of Technology Characterization Facility, University of Minnesota, which receives partial support from the NSF through the NNIN program and has received capital equipment funding from the NSF through the MRSEC, ERC, and MRI programs. The authors thank Prof. K. B. Yoon (Sogang University, Seoul, Korea) for valuable input regarding the implementation of the rubbing method.
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ArticleID:ANIE201004029
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NSF - No. CMMI-0707610; No. DMR-0704312; No. DMR-0212302; No. CBET-0522518
Funding was provided by the NSF (mainly by CMMI‐0707610 and in parts by DMR‐0704312, DMR‐0212302 and CBET‐0522518). Parts of this work were carried out in the Institute of Technology Characterization Facility, University of Minnesota, which receives partial support from the NSF through the NNIN program and has received capital equipment funding from the NSF through the MRSEC, ERC, and MRI programs. The authors thank Prof. K. B. Yoon (Sogang University, Seoul, Korea) for valuable input regarding the implementation of the rubbing method.
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ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201004029