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carbon based membranes for separation processes

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[...]... reproducibility problems of nanoporous carbon (NPC) membranes has been introduced by Acharya and Foley [8] They have used spray A F Ismail et al., Carbon- based Membranes for Separation Processes, DOI 10.1007/978-0-387-78991-0_3, ©Â€Springer Science+Business Media, LLC 2011 17 18 3 Configurations of Carbon Membranes Fig 3.1↜渀 Configurations of carbon membranes coating system for the production of thin layers... due to A F Ismail et al., Carbon- based Membranes for Separation Processes, DOI 10.1007/978-0-387-78991-0_1, ©Â€Springer Science+Business Media, LLC 2011 1 2 1 Introduction Fig 1.1↜渀 Structure of inorganic membranes their low permeability compared to that of porous inorganic membranes Therefore, today’s market for the commercial inorganic membranes is dominated by porous membranes [1–3] At present,... a casting method The authors found that the membranes which had been carbonized at 700°C for 1€h gave the highest performance The membranes exhibited excellent stability up to 500°C without weight loss The flat carbon membranes were produced for gas separation from coal tar pitch by Liang et€al [15] The result showed that the separation power of carbon membranes prepared from coal tar pitch was generally... YD, Yang RT (1994) Preparation of carbon molecular sieve membrane and diffusion of binary mixtures in the membrane Ind Eng Chem Res 33 (12): 3146-3153 Chapter 3 Configurations of Carbon Membranes 3.1  � lat (Supported and Unsupported)   F Carbon Membranes Carbon membranes can be divided into two categories: unsupported and supported carbon membranes [1] Unsupported membranes have three different configurations:... supported membranes consist of two configurations: flat and tube Figure€3.1 shows the configurations of carbon membranes Porous carbon films have been prepared from Kapton-type polyimide (PI) to produce supported and unsupported carbon membranes by Hattori et€al [2–4] They reported that the carbon molecular sieve (CMS) film used for gas separation should be as thin as possible in order to enhance the separation. .. permeability Therefore, the purpose of this book review is to give an overview of the development of carbon molecular sieve membranes during the past 30 years This book also looks towards the future direction of carbon membranes development in the new millennium The concept of carbon membrane for gas separation can be found in the early nineteen seventies Barrer et€al compressed non-porous graphite carbon into... TA, Fuertes AB (1999) Supported carbon molecular sieve membranes based on phenolic resin J Membr Sci 160 (2): 201-211 ╇ 7 Jones CW, Koros WJ (1994) Carbon molecular sieve gas separation membranes- 1 Preparation and characterization based on polyimide precursors Carbon 32 (8): 1419-1425 ╇ 8 Koresh JE, Soffer A (1986) Mechanism of permeation through molecular-sieve carbon membrane Part 1 The effect... he Development of Porous Inorganic Membranes T The development of porous inorganic membranes dates from before 1945, long before the discovery of today’s synthetic organic membranes However, not much publicity was given to these initial innovations, because the first porous inorganic membranes were made for the separation of uranium isotopes and were mainly used for military purposes or nuclear applications... different structures of carbon membranes could be obtained depending on the polymeric precursors, the casting solution and the preparation condition However, preparation conditions had a great effect on the structure and separation properties of the Matrimid -based carbon membranes Recently, they investigated the preparation of supported CMSM formed by a microporous carbon layer, obtained by carbonization of... Adsorption-selective carbon membrane for gas separation J Membr Sci 177 (1-2): 9-16 10 Ismail AF, Shilton SJ, Dunkin IR, Gallivan SL (1997) Direct measurement of rheologically induced molecular orientation in gas separation hollow fiber membranes and effects on selectivity J Membr Sci 126 (1): 133-137 11 Singh A, Koros WJ (1996) Significance of entropic selectivity for advanced gas separation membranes Ind . Carbon- based Membranes for Separation Processes

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