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Reports on General Science from Oak Ridge National Laboratory Provide New Insights

May 30, 2014

By a News Reporter-Staff News Editor at Science Letter -- Researchers detail new data in Science. According to news reporting out of Oak Ridge, Tennessee, by NewsRx editors, research stated, "High-performance polymeric membranes for gas separation are attractive for molecular-level separations in industrial-scale chemical, energyand environmental processes. Molecular sieving materials are widely regarded as the next-generation membranes to simultaneously achieve high permeability and selectivity."

Our news journalists obtained a quote from the research from Oak Ridge National Laboratory, "However, most polymeric molecular sieve membranes are based on a few solution-processable polymers such as polymers of intrinsic microporosity. Here we report an in situ cross-linking strategy for the preparation of polymeric molecular sieve membranes with hierarchical and tailorable porosity. These membranes demonstrate exceptional performance as molecular sieves with high gas permeabilities and selectivities for smaller gas molecules, such as carbon dioxide and oxygen, over larger molecules such as nitrogen. Hence, these membranes have potential for large-scale gas separations of commercial and environmental relevance."

According to the news editors, the research concluded: "Moreover, this strategy could provide a possible alternative to 'classical' methods for the preparation of porous membranes and, in some cases, the only viable synthetic route towards certain membranes."

For more information on this research see: Polymeric molecular sieve membranes via in situ cross-linking of non-porous polymer membrane templates. Nature Communications, 2014;5():20-27. Nature Communications can be contacted at: Nature Publishing Group, Macmillan Building, 4 Crinan St, London N1 9XW, England. (Nature Publishing Group -; Nature Communications -

Our news journalists report that additional information may be obtained by contacting Z.A. Qiao, Oak Ridge Natl Lab, Center Nanophase Mat Sci, Oak Ridge, TN 37831, United States. Additional authors for this research include S.H. Chai, K. Nelson, Z.G. Bi, J.H. Chen, S.M. Mahurin, X. Zhu and S. Dai (see also Science).

Keywords for this news article include: Science, Oak Ridge, Tennessee, United States, North and Central America

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Source: Science Letter

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