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Membrane-based gas- and vapor separation has emerged into an important unit operation in the chemical industry during the past 30 years. The efficiency of this technology strongly depends on the selection of membrane materials, their physicochemical properties, and the mechanism through which permeation occurs. The optimum choice of materials for ultrathin, dense gas separation membranes is more demanding than that of other membrane processes, such as ultrafiltration or microfiltration, where pore size and pore size distribution are the key factors.

The goal of this book is to provide a state-of-the-art review including fundamental as well as practical aspects of membrane-based gas and vapor separations. This comprehensive volume, consisting of 17 chapters written by world authorities, opens with an introduction intended to provide background information necessary for all subsequent chapters. This is followed by chapters covering: Computer simulation methods; Sorption of gases and vapors in polymers; The solution-diffusion model for non-porous membranes as applied to various membrane processes; A description of the free volume model for describing diffusion in polymers; Gas permeation properties of polymers; New groups of polymers as potential membrane materials, e.g. polyacetylenes, amorphous perfluorinated polymers, rigid glassy polyimides; Aging behavior of membrane materials; Gas separation and pervaporation using inorganic membranes; Facilitated transport membranes for providing very high selectivities.

The book will serve as a reference for the professional academic and industrial scientist, while also providing enough basic material to introduce students to the subject.It is the editors' hope that the contents will provide guidance for future research, development and applications in this emerging field.

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Table of Contents

Contributors. Preface. 1. Transport of Gases and Vapors in Glassy and Rubbery Polymers (Scott Matteucci, Yuri Yampolskii, Benny D. Freeman and Ingo Pinnau). 2. Principles of Molecular Simulation of Gas Transport in Polymers (Doros N. Theodorou). 3. Molecular Simulation of Gas and Vapor Transport in Highly Permeable Polymers (Joel R. Fried). 4. Predicting Gas Solubility in Membranes through Non-Equilibrium Thermodynamics for Glassy Polymers (Ferruccio Doghieri, Massimiliano Quinzi, David G. Rethwisch and Giulio C. Sarti). 5. The Solution-Diffusion Model: A Unified Approach to Membrane Permeation (Johannes G. (Hans) Wijmans and Richard W. Baker ). 6. Positron Annihilation Lifetime Spectroscopy and Other Methods for Free Volume Evaluation in Polymers (Yuri Yampolskii and Victor Shantarovich). 7. Prediction of Gas Permeation Parameters of Polymers (Alexander Alentiev and Yuri Yampolskii ). 8. Synthesis and Permeation Properties of Substituted Polyacetylenes for Gas Separation and Pervaporation (Toshio Masuda and Kazukiyo Nagai). 9. Gas and Vapor Transport Properties of Perfluoropolymers (Tim C. Merkel, Ingo Pinnau, Rajeev Prabhakar and Benny D. Freeman). 10. Structure and Transport Properties of Polyimides as Materials for Gas and Vapor Membrane Separation (Kazuhiro Tanaka and Ken-Ichi Okamoto). 11. The Impact of Physical Aging of Amorphous Glassy Polymers on Gas Separation Membranes (Peter H. Pfromm). 12. Zeolite Membranes for Gas and Liquid Separations (George R. Gavalas). 13. Gas and Vapor Separation Membranes Based on Carbon Membranes (Hidetoshi Kita). 14. Polymer Membranes for Separation of Organic Liquid Mixtures (Tadashi Uragami ). 15. Zeolite Membranes for Pervaporation and Vapor Permeation (Hidetoshi Kita). 16. Solid-State Facilitated Transport Membranes for Separation of Olefins/Paraffins and Oxygen/Nitrogen ( Yong Soo Kang, Jong Hak Kim, Jongok Won and Hoon Sik Kim ). 17. Review of Facilitated Transport Membranes (Richard D. Noble and Carl A. Koval ). Index.

About the Author

Dr Y.P. Yampolskii, Topchiev Institute of Petrochemical Synthesis, Moscow, Russia Dr I. Pinnau, Membrane Technology and Research, Inc., Menlo Park, CA, USA Professor B.D. Freeman, University of Texas at Austin, TX, USA

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