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Preparation And Characterization Of Composite Membrane For High Temperature Gas Separation Quarterly Technical Report September 1 November 30 1994
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Book Synopsis Preparation and Characterization of Composite Membrane for High Temperature Gas Separation. Quarterly Technical Report, September 1--November 30, 1994 by :
Download or read book Preparation and Characterization of Composite Membrane for High Temperature Gas Separation. Quarterly Technical Report, September 1--November 30, 1994 written by and published by . This book was released on 1994 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: To develop a new class of permselective inorganic membranes, the authors have identified electroless plating as a potential route to deposit a thin metal film on a porous substrate. Electroless plating is a controlled autocatalytic deposition of continuous film on the surface of a substrate by the interactions of a metal salt and a chemical reducing agent. This method can give thin films of metals, alloys and composites on both conducting and nonconducting surfaces. The objective of this project is to develop thin film palladium membranes for separation of hydrogen in high temperature applications. The authors plan to use electroless plating to deposit thin palladium films on microporous ceramic and silver substrates. They plan to characterize the membrane in terms of permeability and selectivity for gas separation. To accomplish the research objective, the project requires three tasks: Development of a process for composite membrane formation; Characterization of fabricated composite membrane; and Development of theoretical model for hydrogen gas separation. During this quarter, the authors attempted to measure the diffusivity and permeability of hydrogen gas through the palladium composite membrane. While running the diffusion measurements at elevated temperature and pressure, leakage of hydrogen was observed. This is a serious problem and it needs to be resolved. Currently, they are working on this problem. During this quarter, they also designed a diffusion cell to test thin-film palladium membrane in tubular structure. The diffusion cell is being fabricated and assembled by a local machine shop.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1995 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Preparation and Characterization of Composite Membrane for High Temperature Gas Separation. Quarterly Technical Report, December 1, 1996--February 28, 1997 by :
Download or read book Preparation and Characterization of Composite Membrane for High Temperature Gas Separation. Quarterly Technical Report, December 1, 1996--February 28, 1997 written by and published by . This book was released on 1997 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: To develop a new class of permselective inorganic membranes, the authors have identified electroless plating as a potential route to deposit a thin metal film on a porous substrate. Electroless plating is a controlled autocatalytic deposition of continuous film on the surface of a substrate by the interactions of a metal salt and a chemical reducing agent. This method can give thin films of metals, alloys and composites on both conducting and nonconducting surfaces. The objective of this project is to develop thin film palladium membranes for separation of hydrogen in high temperature applications. The authors plan to use electroless plating to deposit thin palladium films on microporous ceramic and silver substrates. They plan to characterize the membrane in terms of permeability and selectivity for gas separation. To accomplish the research objective, the project requires three tasks: (1) development of a process for composite membrane formation; (2) characterization of fabricated composite membrane; and (3) development of theoretical model for hydrogen gas separation. During this quarter they extended their single-staged complete-mixing and cross-flow models to design a Two-Unit-Series (TUS), a Two-Stage Counter-Current Recycle Membrane Cascade (CRMC) and a Five-Stage CRMC arrangement. These designs have been used to study the performance of membrane modules for the separation of hydrogen through Palladium-ceramic composite membranes. The results show that for high-selective membrane, the effect of flow arrangement is of no consequence. Multi-staged cascading significantly improve the product purity and product separation.
Book Synopsis Preparation and Characterization of Composite Membrane for High Temperature Gas Separation by :
Download or read book Preparation and Characterization of Composite Membrane for High Temperature Gas Separation written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A new class of perm-selective inorganic membrane was developed by electroless deposition of palladium thin-film on a microporous[alpha]-alumina ceramic substrate ([phi]39 mm x 2 mm thickness, nominal pore size 150 nm and open porosity[approx] 42%). The new membrane was characterized by Scanning Electron Micrography (SEM), Energy Dispersive X-ray Analysis (EDX) and conducting permeability experiments with hydrogen, helium, argon and carbon dioxide at temperatures from 473 K to 673 K and feed pressures from 136 kPa to 274 kPa. The results indicate that the membrane has both high permeability and selectivity for hydrogen. The hydrogen transport through the Pd-composite membrane closely followed Sievert's law. A theoretical model is presented to describe the performance of a single-stage permeation process. The model uses a unified mathematical formulation and calculation methods for two flow patterns (cocurrent and countercurrent) with two permeable components and a nonpermeable fraction in the feed and a sweep stream in the permeate. The countercurrent flow pattern is always better than the cocurrent flow pattern with respect to stage cut and membrane area. The effect of flow configuration decreases with increasing membrane selectivity or with decreasing permeate/feed ratio.
Book Synopsis Preparation and Char Characterization of Composite Membrane for High Temperature Gas Separation by :
Download or read book Preparation and Char Characterization of Composite Membrane for High Temperature Gas Separation written by and published by . This book was released on 1997 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: A palladium-ceramic composite membrane was developed by electroless deposition of palladium on microporous ceramic substrate. By measuring the permeation characteristics of pure and mixed gases, it was found that the new membrane has a very high permeability and selectivity for hydrogen. During this reporting period, a concurrent flow model for a membrane module was developed to study the performance of palladium-ceramic composite membranes for hydrogen separation in terms of product purity under various operating conditions. The model neglects mass transfer resistance but it was found that the difference between the predicted and actual hydrogen composition was less than 12%.
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1996-05 with total page 1130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Preparation and Characterization of Pd-Ceramic Composite Membrane for High Temparature Gas Separation by : Nan Su
Download or read book Preparation and Characterization of Pd-Ceramic Composite Membrane for High Temparature Gas Separation written by Nan Su and published by . This book was released on 1995 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Tunable Composite Membranes for Gas Separations, Quarterly Technical Report, November 1, 1995-January 31, 1996 by :
Download or read book Tunable Composite Membranes for Gas Separations, Quarterly Technical Report, November 1, 1995-January 31, 1996 written by and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1994 with total page 1368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Tunable Composite Membranes for Gas Separations. Quarterly Technical Progress Report, May--July 1996 by :
Download or read book Tunable Composite Membranes for Gas Separations. Quarterly Technical Progress Report, May--July 1996 written by and published by . This book was released on 1996 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Significant progress has been made in the synthesis and characterization of conducting polymer composite membranes for gas separations. Zeolite/polyalkylthiophene composite membranes have been prepared and characterized for zeolite NaY.
Book Synopsis סדר מלקות עם כוונותיהם על פי האר"י by :
Download or read book סדר מלקות עם כוונותיהם על פי האר"י written by and published by . This book was released on 1664 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Tunable Composite Membranes for Gas Separations. Quarterly Report, July - September 1996 by :
Download or read book Tunable Composite Membranes for Gas Separations. Quarterly Report, July - September 1996 written by and published by . This book was released on 1996 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: During this past quarter of project DE-FG22-94PC94222, continued significant progress was made in the synthesis and characterization of conducting polymer composite membranes for gas separations. Highlights from this funding period include: fabrication of poly(dodecylthiophene), PDDT (M{sub w}=250K), membranes and characterization by light microscopy (LM), scanning electron microscopy (SEM) and atomic force microscopy (AFM); permeability measurements for neutral and chemically oxidized PDDT membranes; extension of previous work on poly(octylthiophene)-zeolite (POT- NaY)composite membranes of different compositions; preparation of tin(IV) sulfides to be incorporated as microporous, {ital electrically conducting}, additives in the composite membranes; synthesis of poly(trioxynonylthiophene) and membrane fabrication and characterization; talks published in the Proceedings of Microscopy and Microanalysis, 1996, Minneapolis, MN, August 11-15, 1996, and presented at the 212th American Chemical Society National Meeting, Orlando, FL, Aug. 25-29, 1996 and at the 52nd American Chemical Society Southwest Regional Meeting, Houston, TX, October 17-19, 1996. 2 figs., 2 tabs.
Book Synopsis Preparation and Characterization of Silicon Based Inorganic Membrane for Gas Separation by : Dong Li
Download or read book Preparation and Characterization of Silicon Based Inorganic Membrane for Gas Separation written by Dong Li and published by . This book was released on 1991 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Materials Science of Membranes for Gas and Vapor Separation by : Benny Freeman
Download or read book Materials Science of Membranes for Gas and Vapor Separation written by Benny Freeman and published by John Wiley & Sons. This book was released on 2006-05-12 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: Materials Science of Membranes for Gas and Vapor Separation is a one-stop reference for the latest advances in membrane-based separation and technology. Put together by an international team of contributors and academia, the book focuses on the advances in both theoretical and experimental materials science and engineering, as well as progress in membrane technology. Special attention is given to comparing polymer and inorganic/organic separation and other emerging applications such as sensors. This book aims to give a balanced treatment of the subject area, allowing the reader an excellent overall perspective of new theoretical results that can be applied to advanced materials, as well as the separation of polymers. The contributions will provide a compact source of relevant and timely information and will be of interest to government, industrial and academic polymer chemists, chemical engineers and materials scientists, as well as an ideal introduction to students.
Book Synopsis Preparation and Characterization of Metal-organic Framework Membranes for Gas Separation by : Helge Bux
Download or read book Preparation and Characterization of Metal-organic Framework Membranes for Gas Separation written by Helge Bux and published by . This book was released on 2011 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Composite Membranes for High Temperature Gas Separations by : Nancy Shanan Moore Stevens
Download or read book Composite Membranes for High Temperature Gas Separations written by Nancy Shanan Moore Stevens and published by . This book was released on 1998 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Microporous Membranes for Gas Separation by : Martin Johannes Wolf
Download or read book Microporous Membranes for Gas Separation written by Martin Johannes Wolf and published by . This book was released on 2015 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
