Journal
CHEMICAL ENGINEERING JOURNAL
Volume 172, Issue 1, Pages 581-590Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2011.06.031
Keywords
Gas permeability; Halloysite nanotube; Large pore size; Mixed matrix membrane; Morphology
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This study investigated the expected morphologies for MMMs comprising large pore size fillers. Halloysite nanotube (HNT) was employed as a representative of large pore size fillers to interpret the morphologies. It was expected that five main morphologies could be observed. The corresponding selectivity-permeability morphological diagram was proposed and compared to the morphological diagram proposed by Moore and Koros [3] for small pore size fillers MMMs. The proposed morphological diagrams were compared to a variety of experimental results from the open literature and the outcomes were in good agreements. This study addressed and confirmed that the type of filler (large or small pore size), type of membrane structure either dense symmetric or asymmetric and fillers particle size are among the most influential factors in determining the final MMMs separation performance. (C) 2011 Elsevier B.V. All rights reserved.
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