Zeolite-Filled PDMS Membranes. 2. Pervaporation of Halogenated Hydrocarbons
In order to study in more detail the influence of the filler on pervaporation performance, silicalite, ZSM-5, and zeolite Y were incorporated in poly(dimethylsiloxane) (PDMS) and tested in pervaporation experiments with binary mixtures of chlorinated hydrocarbons (Cl-HC's) in water. The results...
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Veröffentlicht in: | Journal of Physical Chemistry B: Materials, Surfaces, Interfaces, amp Biophysical Surfaces, Interfaces, amp Biophysical, 1997-03, Vol.101 (12), p.2160-2163 |
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container_title | Journal of Physical Chemistry B: Materials, Surfaces, Interfaces, amp Biophysical |
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creator | Dotremont, C Vankelecom, I. F. J Morobé, M Uytterhoeven, J.-B Vandecasteele, C |
description | In order to study in more detail the influence of the filler on pervaporation performance, silicalite, ZSM-5, and zeolite Y were incorporated in poly(dimethylsiloxane) (PDMS) and tested in pervaporation experiments with binary mixtures of chlorinated hydrocarbons (Cl-HC's) in water. The results were compared with unfilled PDMS as a reference. The highest selectivities were obtained with the silicalite-filled membranes. However, these membranes showed a decrease in permeability for voluminous components due to molecular sieving effects. In this respect, the results with zeolite Y were rather disappointing, as its larger pore size was counteracted by its high polarity, whereas ZSM-5-filled membranes showed intermediate selectivities. Therefore, mesoporous silicas were synthesized, silylated to assure their apolarity, and incorporated in PDMS. The resulting membranes showed both improved organic fluxes and selectivities in comparison with all other membranes, even for voluminous organics, proving the absence of molecular sieving effects. |
doi_str_mv | 10.1021/jp961809u |
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Pervaporation of Halogenated Hydrocarbons</title><source>ACS Publications</source><creator>Dotremont, C ; Vankelecom, I. F. J ; Morobé, M ; Uytterhoeven, J.-B ; Vandecasteele, C</creator><creatorcontrib>Dotremont, C ; Vankelecom, I. F. J ; Morobé, M ; Uytterhoeven, J.-B ; Vandecasteele, C</creatorcontrib><description>In order to study in more detail the influence of the filler on pervaporation performance, silicalite, ZSM-5, and zeolite Y were incorporated in poly(dimethylsiloxane) (PDMS) and tested in pervaporation experiments with binary mixtures of chlorinated hydrocarbons (Cl-HC's) in water. The results were compared with unfilled PDMS as a reference. The highest selectivities were obtained with the silicalite-filled membranes. However, these membranes showed a decrease in permeability for voluminous components due to molecular sieving effects. In this respect, the results with zeolite Y were rather disappointing, as its larger pore size was counteracted by its high polarity, whereas ZSM-5-filled membranes showed intermediate selectivities. Therefore, mesoporous silicas were synthesized, silylated to assure their apolarity, and incorporated in PDMS. 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In this respect, the results with zeolite Y were rather disappointing, as its larger pore size was counteracted by its high polarity, whereas ZSM-5-filled membranes showed intermediate selectivities. Therefore, mesoporous silicas were synthesized, silylated to assure their apolarity, and incorporated in PDMS. The resulting membranes showed both improved organic fluxes and selectivities in comparison with all other membranes, even for voluminous organics, proving the absence of molecular sieving effects.</description><subject>40 CHEMISTRY</subject><subject>FILLERS</subject><subject>HYDROCARBONS</subject><subject>MATERIALS SCIENCE</subject><subject>MEMBRANE TRANSPORT</subject><subject>MEMBRANES</subject><subject>ORGANIC CHLORINE COMPOUNDS</subject><subject>PERMEABILITY</subject><subject>POLYMERS</subject><subject>SILANES</subject><subject>ZEOLITES</subject><issn>1520-6106</issn><issn>1520-5207</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1997</creationdate><recordtype>article</recordtype><recordid>eNpt0E1PwkAQBuCN0URED_6DevDgobgf7G57NChiBCWBqOGymW6nWqxdsluM_HtrIJw8TGYOTyYzLyHnjPYY5ex6uUoVS2i6PiAdJjmN29KHu1kxqo7JSQhLSrnkieqQxwW6qmwwHpZVhXk0vZ3Mogl-ZR5qDL2I96Ip-m9YOQ9N6erIFdEIKveONTStH21y7yz4zNXhlBwVUAU82_UumQ_v5oNRPH6-fxjcjGMQUjdxX2kKiZCZwDRJ-iggE1IorgTwArUGSVNBk1RpralUlmNui1yxQmAfEyq65GK71oWmNMG219sP6-oabWMkZSlPW3O1Nda7EDwWZuXLL_Abw6j5C8rsg2ptvLVlaPBnD8F_GqWFlmY-nZmnxezlTQ9ejWr95daDDWbp1r5un_1n7y_IDnTf</recordid><startdate>19970320</startdate><enddate>19970320</enddate><creator>Dotremont, C</creator><creator>Vankelecom, I. 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J</creatorcontrib><creatorcontrib>Morobé, M</creatorcontrib><creatorcontrib>Uytterhoeven, J.-B</creatorcontrib><creatorcontrib>Vandecasteele, C</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Journal of Physical Chemistry B: Materials, Surfaces, Interfaces, amp Biophysical</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Dotremont, C</au><au>Vankelecom, I. F. J</au><au>Morobé, M</au><au>Uytterhoeven, J.-B</au><au>Vandecasteele, C</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Zeolite-Filled PDMS Membranes. 2. Pervaporation of Halogenated Hydrocarbons</atitle><jtitle>Journal of Physical Chemistry B: Materials, Surfaces, Interfaces, amp Biophysical</jtitle><addtitle>J. Phys. Chem. B</addtitle><date>1997-03-20</date><risdate>1997</risdate><volume>101</volume><issue>12</issue><spage>2160</spage><epage>2163</epage><pages>2160-2163</pages><issn>1520-6106</issn><eissn>1520-5207</eissn><abstract>In order to study in more detail the influence of the filler on pervaporation performance, silicalite, ZSM-5, and zeolite Y were incorporated in poly(dimethylsiloxane) (PDMS) and tested in pervaporation experiments with binary mixtures of chlorinated hydrocarbons (Cl-HC's) in water. The results were compared with unfilled PDMS as a reference. The highest selectivities were obtained with the silicalite-filled membranes. However, these membranes showed a decrease in permeability for voluminous components due to molecular sieving effects. In this respect, the results with zeolite Y were rather disappointing, as its larger pore size was counteracted by its high polarity, whereas ZSM-5-filled membranes showed intermediate selectivities. Therefore, mesoporous silicas were synthesized, silylated to assure their apolarity, and incorporated in PDMS. The resulting membranes showed both improved organic fluxes and selectivities in comparison with all other membranes, even for voluminous organics, proving the absence of molecular sieving effects.</abstract><cop>United States</cop><pub>American Chemical Society</pub><doi>10.1021/jp961809u</doi><tpages>4</tpages></addata></record> |
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subjects | 40 CHEMISTRY FILLERS HYDROCARBONS MATERIALS SCIENCE MEMBRANE TRANSPORT MEMBRANES ORGANIC CHLORINE COMPOUNDS PERMEABILITY POLYMERS SILANES ZEOLITES |
title | Zeolite-Filled PDMS Membranes. 2. Pervaporation of Halogenated Hydrocarbons |
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