A Controllable Nanometer-Sized Valve

The effect of a MFI membrane nanostructure change on n‐hexane/ 2,2‐dimethylbutane (DMB) permeation is described. The figure shows a) DMB transporting through the defects in an empty membrane, b) DMB permeation is blocked due to the initial defects closing by crystal expansion by n‐hexane, c) both n‐...

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Published inAdvanced materials (Weinheim) Vol. 19; no. 19; pp. 3032 - 3036
Main Authors Yu, M., Falconer, J. L., Amundsen, T. J., Hong, M., Noble, R. D.
Format Journal Article
LanguageEnglish
Published Weinheim WILEY-VCH Verlag 05.10.2007
WILEY‐VCH Verlag
Subjects
chemical
Membranes
Sensors
Sensors, chemical
Zeolites
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Summary:The effect of a MFI membrane nanostructure change on n‐hexane/ 2,2‐dimethylbutane (DMB) permeation is described. The figure shows a) DMB transporting through the defects in an empty membrane, b) DMB permeation is blocked due to the initial defects closing by crystal expansion by n‐hexane, c) both n‐hexane and DMB permeation are blocked when the membrane is exposed to DMB first. The pores shrink and trap DMB so that almost all transport is blocked.
Bibliography:National Science Foundation - No. CTS 0340563
ark:/67375/WNG-QBTHBW5M-6
We gratefully acknowledge support by the National Science Foundation Grant CTS 0340563. TJA also acknowledges support by the National Science Foundation REU Site Program in Functional Materials EEC 0243896. We also thank Drs. Ronald R. Chance, Harry W. Deckman, Tracy Q. Gardner, and Ben McCool for valuable discussions.
National Science Foundation REU Site Program in Functional Materials - No. EEC 0243896
ArticleID:ADMA200602774
istex:D443BF90C0D0E8EDB7BB74B56C4110A04E19F624
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.200602774