An experimental study of micropore defects in MFI membranes
In: Microporous and Mesoporous Materials, Jg. 186 (2014-03-01), S. 194-200
Online
unknown
Zugriff:
In the present work, two ultra-thin MFI membranes, prepared using hydroxide and fluoride ions as mineralizing agents, respectively, were carefully examined by permporometry. The amount of micropore defects, as determined by permporometry, differed significantly between the two different membranes. For the first time, it was demonstrated that the micropore defects determined by permporometry were most likely open grain boundaries. The results were verified by direct observation of the open grain boundaries by a state-of-the-art XHR-scanning electron microscopy instrument. In addition, the permporometry data were also consistent with permeation data using 1,3,5-trimethylbenzene (TMB) as a probe molecule, separation data using an equimolar mixture of n -hexane and TMB, and nitrogen adsorption data.
Titel: |
An experimental study of micropore defects in MFI membranes
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Autor/in / Beteiligte Person: | Zhou, Han ; Mouzon, Johanne ; Korelskiy, Danil ; Ye, Pengcheng ; Hedlund, Jonas |
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Zeitschrift: | Microporous and Mesoporous Materials, Jg. 186 (2014-03-01), S. 194-200 |
Veröffentlichung: | Elsevier BV, 2014 |
Medientyp: | unknown |
ISSN: | 1387-1811 (print) |
DOI: | 10.1016/j.micromeso.2013.12.002 |
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