High molecular sieve loading mixed matrix membranes for gas separations
Traditional gas separation technologies are thermally-driven and can have adverse environmental and economic impacts. Gas separation membrane processes are not thermally-driven and have low capital and operational costs which make them attractive alternatives to traditional technologies. Polymers...
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ndltd-GATECH-oai-smartech.gatech.edu-1853-394702013-01-07T20:37:25ZHigh molecular sieve loading mixed matrix membranes for gas separationsAdams, Ryan ThomasMembraneHigh loadingNatural gasMetal organic frameworkMixed matrix membraneGas separationGas separation membranesMolecular sievesTraditional gas separation technologies are thermally-driven and can have adverse environmental and economic impacts. Gas separation membrane processes are not thermally-driven and have low capital and operational costs which make them attractive alternatives to traditional technologies. Polymers are easily processed into large, defect-free membrane modules which have made polymeric membranes the industrial standard; however, polymers show separation efficiency-productivity trade-offs and are often not thermally or chemically robust. Molecular sieves, such as zeolites, have gas separation properties that exceed polymeric materials and are more thermally and chemically robust. Unfortunately, formation of large, defect-free molecular sieve membranes is not economically feasible. Mixed matrix membranes (MMMs) combine the ease of processing polymeric materials with the superior transport properties of molecular sieves by dispersing molecular sieve particles in polymer matrices to enhance the performance of the polymers. MMMs with high molecular sieve loadings were made using polyvinyl acetate (PVAc) and various molecular sieves. Successful formation of these MMMs required substantial modifications to low loading MMM formation techniques. The gas separation properties of these MMMs show significant improvements over PVAc properties, especially for high pressure mixed carbon dioxide-methane feeds that are of great industrial relevance.Georgia Institute of Technology2011-07-06T16:25:10Z2011-07-06T16:25:10Z2010-01-13Dissertationhttp://hdl.handle.net/1853/39470 |
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Membrane High loading Natural gas Metal organic framework Mixed matrix membrane Gas separation Gas separation membranes Molecular sieves |
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Membrane High loading Natural gas Metal organic framework Mixed matrix membrane Gas separation Gas separation membranes Molecular sieves Adams, Ryan Thomas High molecular sieve loading mixed matrix membranes for gas separations |
description |
Traditional gas separation technologies are thermally-driven and can have adverse environmental and economic impacts. Gas separation membrane processes are not thermally-driven and have low capital and operational costs which make them attractive alternatives to traditional technologies. Polymers are easily processed into large, defect-free membrane modules which have made polymeric membranes the industrial standard; however, polymers show separation efficiency-productivity trade-offs and are often not thermally or chemically robust. Molecular sieves, such as zeolites, have gas separation properties that exceed polymeric materials and are more thermally and chemically robust. Unfortunately, formation of large, defect-free molecular sieve membranes is not economically feasible. Mixed matrix membranes (MMMs) combine the ease of processing polymeric materials with the superior transport properties of molecular sieves by dispersing molecular sieve particles in polymer matrices to enhance the performance of the polymers.
MMMs with high molecular sieve loadings were made using polyvinyl acetate (PVAc) and various molecular sieves. Successful formation of these MMMs required substantial modifications to low loading MMM formation techniques. The gas separation properties of these MMMs show significant improvements over PVAc properties, especially for high pressure mixed carbon dioxide-methane feeds that are of great industrial relevance. |
author |
Adams, Ryan Thomas |
author_facet |
Adams, Ryan Thomas |
author_sort |
Adams, Ryan Thomas |
title |
High molecular sieve loading mixed matrix membranes for gas separations |
title_short |
High molecular sieve loading mixed matrix membranes for gas separations |
title_full |
High molecular sieve loading mixed matrix membranes for gas separations |
title_fullStr |
High molecular sieve loading mixed matrix membranes for gas separations |
title_full_unstemmed |
High molecular sieve loading mixed matrix membranes for gas separations |
title_sort |
high molecular sieve loading mixed matrix membranes for gas separations |
publisher |
Georgia Institute of Technology |
publishDate |
2011 |
url |
http://hdl.handle.net/1853/39470 |
work_keys_str_mv |
AT adamsryanthomas highmolecularsieveloadingmixedmatrixmembranesforgasseparations |
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1716475475051675648 |