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Author : Philip L. Andrew
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (222 download)
Download or read book Hydrogen Permeation Through Bilayer Metallic Membranes written by Philip L. Andrew and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : University of Toronto. Institute for Aerospace Studies
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (13 download)
Download or read book UTIAS Report 342. Hydrogen Permeation Through Bilayer Metallic Membranes written by University of Toronto. Institute for Aerospace Studies and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David Karl Kuhn
Publisher :
ISBN 13 :
Total Pages : 482 pages
Book Rating : 4.E/5 ( download)
Download or read book Hydrogen Permeation Through Metals written by David Karl Kuhn and published by . This book was released on 1985 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R. W. Webb
Publisher :
ISBN 13 :
Total Pages : 34 pages
Book Rating : 4.3/5 (91 download)
Download or read book Permeation of Hydrogen Through Metals written by R. W. Webb and published by . This book was released on 1965 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : T. N. Kompaniets
Publisher :
ISBN 13 : 9780080308975
Total Pages : 77 pages
Book Rating : 4.3/5 (89 download)
Download or read book Surface Processes in Hydrogen Permeation Through Metal Membranes written by T. N. Kompaniets and published by . This book was released on 1984 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : F. Waelbroeck
Publisher :
ISBN 13 :
Total Pages : 214 pages
Book Rating : 4.3/5 (243 download)
Download or read book Influence of Bulk and Surface Phenomena on the Hydrogen Permeation Through Metals written by F. Waelbroeck and published by . This book was released on 1984 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrogen Permeability of Mulitphase V-Ti-Ni Metallic Membranes written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Development of advanced hydrogen separation membranes in support of hydrogen production processes such as coal gasification and as front end gas purifiers for fuel cell based system is paramount to the successful implementation of a national hydrogen economy. Current generation metallic hydrogen separation membranes are based on Pd-alloys. Although the technology has proven successful, at issue is the high cost of palladium. Evaluation of non-noble metal based dense metallic separation membranes is currently receiving national and international attention. The focal point of the reported work was to evaluate a Group 5A-Ta, Nb, V-based alloy with respect to microstructural features and hydrogen permeability. Electrochemical hydrogen permeation testing of the V-Ti-Ni alloy is reported herein and compared to pure Pd measurements recorded as part of this same study. The V-Ti-Ni was demonstrated to have a steady state hydrogen permeation rate an order of magnitude higher than the pure Pd material in testing conducted at 22 C.
Author : D. W. Rudd
Publisher :
ISBN 13 :
Total Pages : 38 pages
Book Rating : 4.3/5 (91 download)
Download or read book The Permeation of Hydrogen Through Hastelloy B written by D. W. Rudd and published by . This book was released on 1961 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Philip L. Andrew
Publisher :
ISBN 13 :
Total Pages : 110 pages
Book Rating : 4.:/5 (222 download)
Download or read book Hydrogen Permeation Through Multilayer Metallic Membranes written by Philip L. Andrew and published by . This book was released on 1990 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Logan Scott McLeod
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (642 download)
Download or read book Hydrogen Permeation Through Microfabricated Palladium-silver Alloy Membranes written by Logan Scott McLeod and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Energy efficient purification of hydrogen is an important technological challenge with broad applications in the chemical, petrochemical, metallurgical, pharmaceutical, textile and energy industries. Palladium-alloy membranes are particularly suited to this problem due to their high hydrogen permeability, thermal stability, and virtually infinite selectivity. In current systems hydrogen flux is observed to be inversely proportional to membrane thickness which is indicative of the interstitial diffusion mechanism of hydrogen permeation. This observation, along with the high cost of palladium, has motivated continuous efforts to decrease membrane thickness. Theoretical modeling of membrane performance predicts that as membrane thickness continues to decrease, eventually the permeation rate will no longer be limited by diffusion through the bulk Pd but will become limited by desorption from the permeate surface. If it exists, this is a vital transition to pinpoint due to the fact that below this thickness membrane operating conditions will have a drastically different effect on hydrogen permeation behavior and no additional performance enhancements will result from further decreasing thickness. A handful of experimental results in the open literature contradict these modeling predictions. A new model is developed in this work to explain these contradictions by considering the non-ideal behavior of hydrogen solution into metals which has been neglected in previous models. Additionally, it has been demonstrated that hydrogen permeation through bulk Pd depends on membrane microstructure, making deposition conditions and post-deposition thermal treatment important issues for repeatable performance.
Author : Thijs Peters
Publisher : MDPI
ISBN 13 : 3038977020
Total Pages : 190 pages
Book Rating : 4.0/5 (389 download)
Download or read book Pd-based Membranes written by Thijs Peters and published by MDPI. This book was released on 2019-03-26 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Palladium (Pd)-based membranes have received a great deal of attention from both academia and industry thanks to their ability to selectively separate hydrogen from gas streams. The integration of such membranes with appropriate catalysts in membrane reactors allows for hydrogen production with CO2 capture that can be applied in smaller bioenergy or combined heat and power (CHP) plants, as well as in large-scale power plants. Pd-based membranes are therefore regarded as a Key Enabling Technology (KET) to facilitate the transition towards a knowledge-based, low-carbon, and resource-efficient economy. This Special Issue of the journal Membranes on “Pd-based Membranes: Overview and Perspectives” contains nine peer-reviewed articles. Topics include manufacturing techniques, understanding of material phenomena, module and reactor design, novel applications, and demonstration efforts and industrial exploitation.
Author : Mark Andrew Gallop
Publisher :
ISBN 13 :
Total Pages : 52 pages
Book Rating : 4.:/5 (152 download)
Download or read book Hydrogen Permeation Through Iron and Steel Membranes written by Mark Andrew Gallop and published by . This book was released on 1983 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mehrooz Zamanzadeh
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (141 download)
Download or read book A theoretical and experimental study of hydrogen permeation and transport through metal- and oxide-coated iron membranes : thesis written by Mehrooz Zamanzadeh and published by . This book was released on 1980 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : S. S. Chatterjee
Publisher :
ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.:/5 (227 download)
Download or read book Effect of Electrodeposited Metals on the Permeation of Hydrogen Through Iron Membranes written by S. S. Chatterjee and published by . This book was released on 1977 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: The permeability of electrolytically charged hydrogen through annealed Ferrovac E iron memebranes was found to decrease significantly upon coating the charging surface of iron with thin layers of either Pt, Cu or Ni (Watts or electroless). The absorption of hydrogen was delayed for a period which depends on the nature and the thickenss of the metallic coating. The results show that such coatings do not have to be thick or even continuous to be effective, in which case a catalytic mechanism is proposed to explain the marked reduction in hydrogen permeation through the iron. Experimental confirmation is presented of this catalytic mechanism and of the barrier mechanism which is operative in the presence of a thick continuous coating. It is also shown that the domains of each mechanism can be determined by simple calculations from first principles. (Author).
Author : Angelo Basile
Publisher : Elsevier
ISBN 13 : 0128183330
Total Pages : 412 pages
Book Rating : 4.1/5 (281 download)
Download or read book Current Trends and Future Developments on (Bio-) Membranes written by Angelo Basile and published by Elsevier. This book was released on 2020-01-05 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current Trends and Future Developments in (Bio-) Membranes: Recent Advances in Metallic Membranes presents recent developments in metallic membranes used in membrane reactors to save energy. It also offers a comprehensive review of the present state-of-the-art on the fabrication and design of metallic membranes and membrane reactors, considering various applications. This book focuses on the structure, preparation, characterization and applications of metallic membranes and membrane reactors, as well as transport mechanisms and simulation aspects. As recent research has focused on the development of metallic membranes and their applications, this book is an ideal reference on different production procedures and their use. Reviews metallic membranes research and applications Outlines the mechanisms of metallic membrane based processes Includes structure, preparation, characterization and properties of metallic membranes Highlights various applications of metallic membranes in energy production
Author : D.J. Fisher
Publisher : Trans Tech Publications Ltd
ISBN 13 : 3038264059
Total Pages : 362 pages
Book Rating : 4.0/5 (382 download)
Download or read book Hydrogen Diffusion in Metals written by D.J. Fisher and published by Trans Tech Publications Ltd. This book was released on 2014-01-23 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to its small size, the hydrogen atom is, wanted or unwanted, an ubiquitous diffusant in many metallic systems. It has long been known for its harmful effect upon mild steel sheet; the deleterious phenomenon of hydrogen-embrittlement having been recognized since the early days of the industrial revolution. Its behavior in some metals is further complicated by its tendency to form hydrides with the metal, or with various non-metallic impurities. The ability of some metals and alloys to store large quantities of hydrogen first recognized in the 19th century - is another complicating factor. The complexity of metal-hydrogen behavior was undoubtedly also the cause of the mistaken cold fusion claims of the late 1980s. The present issue comprises a compilation of hydrogen diffusion and permeation data in metals. These data are believed to be pure: that is, free from the interfering effects of hydride formation, etc. The almost 600 entries, 201 tables and 41 figures cover the period from 1966 to 2013. These are supplemented by an original review, by T.B.Flanagan of the University of Vermont, which has as its subject, The Role of the Thermodynamic Factor in Hydrogen Diffusion in Metal and Alloy Membranes.
Download or read book Supported Molten Metal Membranes for Hydrogen Separation written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We describe here our results on the feasibility of a novel dense metal membrane for hydrogen separation: Supported Molten Metal Membrane, or SMMM. 1 The goal in this work was to develop these new membranes based on supporting thin films of low-melting, non- precious group metals, e.g., tin (Sn), indium (In), gallium (Ga), or their alloys, to provide a flux and selectivity of hydrogen that rivals the conventional but substantially more expensive palladium (Pd) or Pd alloy membranes, which are susceptible to poisoning by the many species in the coal-derived syngas, and further possess inadequate stability and limited operating temperature range. The novelty of the technology presented numerous challenges during the course of this project, however, mainly in the selection of appropriate supports, and in the fabrication of a stable membrane. While the wetting instability of the SMMM remains an issue, we did develop an adequate understanding of the interaction between molten metal films with porous supports that we were able to find appropriate supports. Thus, our preliminary results indicate that the Ga/SiC SMMM at 550 ðC has a permeance that is an order of magnitude higher than that of Pd, and exceeds the 2015 DOE target. To make practical SMM membranes, however, further improving the stability of the molten metal membrane is the next goal. For this, it is important to better understand the change in molten metal surface tension and contact angle as a function of temperature and gas-phase composition. A thermodynamic theory was, thus, developed, that is not only able to explain this change in the liquid-gas surface tension, but also the change in the solid-liquid surface tension as well as the contact angle. This fundamental understanding has allowed us to determine design characteristics to maintain stability in the face of changing gas composition. These designs are being developed. For further progress, it is also important to understand the nature of solution and permeation process in these molten metal membranes. For this, a comprehensive microkinetic model was developed for hydrogen permeation in dense metal membranes, and tested against data for Pd membrane over a broad range of temperatures. 3 It is planned to obtain theoretical and experimental estimates of the parameters to corroborate the model against mental results for SMMM.
