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Dissertations / Theses on the topic 'Hydrogen membranes'

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Published: 2 June 2025
Last updated: 31 July 2025

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1

Næss, Live Nova. "Pd-based Membranes for Hydrogen Separation - Membrane Structure and Hydrogen Sorption and Permeation Behavior." Thesis, Norges Teknisk-Naturvitenskaplige Universitet, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-20867.

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Efficient separation of hydrogen from gas mixtures is a truly enabling technology for hydrogen as an energy carrier. Palladium(Pd)-based membranes are 100% selective to hydrogen, but need to be made thin, yet without defects in order for the technology to be applicable. The motivation for this work has been to examine solubility properties and surface topography for Pd-based membranes, and further elucidate the influence these parameters have on the overall hydrogen permeation capabilities. Extremely thin, defect-free Pd-alloy membranes supplied by SINTEF Materials and Chemistry were investiga
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2

Amandusson, Helena. "Hydrogen extraction with palladium based membranes /." Linköping : Univ, 2000. http://www.bibl.liu.se/liupubl/disp/disp2000/tek651s.htm.

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3

Chandrasekhar, Nita. "Computational study of intermetallic and alloy membranes for hydrogen separation." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/51861.

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Metal membranes are useful for hydrogen separation from mixed gas streams. They can exhibit perfect selectivity for hydrogen. However, in order to be commercially viable, in addition to providing high hydrogen fluxes, they must also be resistant to poisoning, possess long operating lifetimes and be cost effective. Many types of metal membranes such as pure metals, disordered alloys and amorphous metals have been studied for this application. In this work, we aim to identify intermetallic stoichiometric compounds of two or more metals that could be used as potential membrane materials for hydro
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4

Lakshminarayanan, Karthikeyan. "Synthesis and characterization of hydrogen separation membranes." Thesis, Montana State University, 2005. http://etd.lib.montana.edu/etd/2005/lakshminarayanan/LakshminarayananK0506.pdf.

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5

Grainger, David. "Development of carbon membranes for hydrogen recovery." Doctoral thesis, Norwegian University of Science and Technology, Department of Materials Technology, 2007. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-1822.

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<p>The recovery of hydrogen from gas mixtures with hydrocarbons may provide a commercial niche for carbon molecular sieve membranes (CMSMs). Previous work has shown that carbon membranes achieve excellent performance, with respect to hydrogen permeability and selectivity, in the separation of hydrogen from light hydrocarbons, such as CH<sub>4</sub>, and CO<sub>2</sub>. The intent of this work was to screen CMSMs derived from cellulose-hemicellulose for H<sub>2</sub> recovery and to generate performance data so that commercial application could be simulated. Three fields of application were eva
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Meyer, Faiek. "Hydrogen selective properties of cesium-hydrogensulphate membranes." Thesis, University of the Western Cape, 2006. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_5047_1233727545.

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<p>Over the past 40 years, research pertaining to membrane technology has lead to the development of a wide range of applications including beverage production, water purification and the separation of dairy products. For the separation of gases, membrane technology is not as widely applied since the production of suitable gas separation membranes is far more challenging than the production of membranes for eg. water purification. Hydrogen is currently produced by recovery technologies incorporated in various chemical processes. Hydrogen is mainly sourced from fossil fuels via steam reformatio
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7

Roaas, Lasse Valland. "Synthesis and Characterization of Hydrogen Transport Membranes." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for materialteknologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-19418.

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Hydrogen transport membranes have gained interest from industry as an alternative to pressure swing adsorption or cryogenic distillation, and are aimed to reduce cost, equipment size, energy consumption and waste generation. Doped strontium cerate stabilized with zirconium exhibit high proton conductivity and chemical stability and is therefore considered to be a promising material for hydrogen transport membranes.The purpose of the work was to investigate if phase pure strontium cerates, stabilized with zirconium and doped with thulium, ytterbium or yttrium, could be synthesized by the Pechin
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8

Yen, Pei-Shan. "Supported Liquid Metal Membranes for Hydrogen Separation." Digital WPI, 2016. https://digitalcommons.wpi.edu/etd-dissertations/480.

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Hydrogen (H2) and fuel cells applications are central to the realization of a global hydrogen economy. In this scenario, H2 may be produced from renewable biofuels via steam reforming and by solar powered water electrolysis. The purification required for fuel cell grade H2, whether in tandem or in situ within a catalytic reformer operating at 500 oC or above, would be greatly facilitated by the availability a cheaper and more robust option to palladium (Pd) dense metal membrane, currently the leading candidate. Here we describe our results on the feasibility of a completely novel membrane for
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9

Zou, Jian. "Carbon dioxide-selective membranes and their applications in hydrogen processing." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1173296419.

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10

Alkali, Abubakar. "Development and testing of inorganic membranes for hydrogen separation and purification in a catalytic membrane reactor." Thesis, Robert Gordon University, 2016. http://hdl.handle.net/10059/3137.

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Palladium membranes have been identified as the membranes of choice in hydrogen separation and purification processes due to their infinite selectivity to hydrogen when defect free. Despite their potentials in hydrogen processes, palladium membranes pose challenges in terms of cost and embritllement which occurs when palladium comes in contact with hydrogen at temperatures below 573 K. The challenges posed by palladium membranes have encouraged research into nonpalladium based membranes such as Silica and Alumina. This thesis investigates hydrogen permeation and separation in palladium membran
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11

McLeod, Logan Scott. "Hydrogen permeation through microfabricated palladium-silver alloy membranes." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/31672.

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Thesis (Ph.D)--Mechanical Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Fedorov, Andrei; Committee Co-Chair: Degertekin, Levent; Committee Member: Koros, William; Committee Member: Liu, Meilin; Committee Member: Mayor, J. Rhett. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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12

Paranjape, Mrudula. "Hydrogen enrichment by selective surface flow, SSF, membranes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/mq20879.pdf.

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13

Fletcher, Sean. "Thin film Palladium-Ytrium membranes for hydrogen separation." Thesis, University of Birmingham, 2010. http://etheses.bham.ac.uk//id/eprint/924/.

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The permeability of hydrogen in thin film Pd-Y composite membranes has been investigated for the first time. Thin (5 µm) Pd-Y films were deposited onto macroporous 316L stainless steel substrates by magnetron sputtering. Prior to deposition, a novel laser melting technique was employed in an attempt to reduce the surface roughness and pore size, thus facilitating the deposition of defect-free films. The active hydrogen transport mechanisms of each layer have been determined and the observed hydrogen permeability was analysed using a series resistance type model. The porous substrate was found
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14

CHENG, SHIGAO. "PROTON-CONDUCTING DENSE CERAMIC MEMBRANES FOR HYDROGEN SEPARATION." University of Cincinnati / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1051300176.

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15

Akis, B. Ceylan. "Preparation of Pd-Ag/PSS composite membranes for hydrogen separation." Link to electronic thesis, 2004. http://www.wpi.edu/Pubs/ETD/Available/etd-0430104-113019.

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16

Kang, Sung Gu. "Dense metal and perovskite membranes for hydrogen and proton conduction." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/48944.

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First- principles modeling is used to predict hydrogen permeability through Palladium (Pd)-rich binary alloy membranes as a function of temperature and H2 pressure. We introduce a simplified model that incorporates only a few factors and yields quantitative prediction. This model is used to predict hydrogen permeability in a wide range of binary alloy membranes and to find promising alloys that have high hydrogen permeability. We show how our efficient Density Functional Theory (DFT)-based model predicts the chemical stability and proton conductivity of doped barium zirconate (BaZrO3), barium
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17

Semidey, Flecha Lymarie. "First-principles approach to screening multi-component metal alloys for hydrogen purification membranes." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31710.

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Thesis (Ph.D)--Chemical Engineering, Georgia Institute of Technology, 2010.<br>Committee Chair: Dr. David S. Sholl; Committee Member: Dr. Andrei G. Fedorov; Committee Member: Dr. Ronald R. Chance; Committee Member: Dr. Victor Breedveld; Committee Member: Dr. William Koros. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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18

Hong, Mei. "Zeolite membranes for hydrogen purification and carbon dioxide removal." Connect to online resource, 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3256383.

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19

Piskin, Fatih. "Deposition And Testing Of Thin Film Hydrogen Separation Membranes." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615550/index.pdf.

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Industrial production of hydrogen from the syngas, generated from steam reformation of natural gas or coal gasification, sets conditions for hydrogen separation membranes in terms of operating conditions. An alternative source for hydrogen is a syngas generated by gasification of municipal solid wastes which are likely to set more stringent conditions for the separation membranes. There is therefore, a growing demand for separation membranes with improved permeability and particularly of low cost. Among various alternatives, metallic membranes are particularly attractive due to their high sele
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20

Hinchcliffe, Anthony Bernard. "The separation of hydrogen and carbon using polymer membranes." Thesis, Aston University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334425.

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21

El-Zarouk, Khaled Mohamed. "Composite inorganic membranes for hydrogen reaction, separation and purification." Thesis, Robert Gordon University, 2007. http://hdl.handle.net/10059/1249.

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Silica-alumina composite membranes for hydrogen separation and high temperature chemical reactions were prepared using both conventional and modified dip-coating techniques. These were deposited on commercially available a.-alumina macroporous support of 10 millimetre (mm) outer diameter, 7 mm inner diameter and average pore size of 6000 nanometre (nm) wash coated with Titania. The reactants of the coating technique were silicone elastomer and isopentane promoted by a catalyst. The catalyst (silicone curing agent) was added as a templating agent to control the eventual adhesion and densificati
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22

Augustine, Alexander Sullivan. "Supported Pd and Pd/Alloy Membranes for Water-Gas Shift Catalytic Membrane Reactors." Digital WPI, 2013. https://digitalcommons.wpi.edu/etd-dissertations/99.

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This work describes the application of porous metal supported Pd-membranes to the water-gas shift catalytic membrane reactor in the context of its potential application to the Integrated Gasification Combined Cycle (IGCC) process. The objective of this work was to develop a better understanding of Pd-membrane fabrication techniques, water-gas shift catalytic membrane reactor operation, and long-term behavior of the Pd-membranes under water-gas shift conditions. Thin (1.5 - 16 um) Pd-membranes were prepared by electroless deposition techniques on porous metal supports by previously deve
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23

Chareyre, Laetitia. "Développement de nouvelles membranes céramiques et hybrides de non oxydes pour la séparation de l'hydrogène." Thesis, Montpellier, Ecole nationale supérieure de chimie, 2012. http://www.theses.fr/2012ENCM0024/document.

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Le développement d'une méthode efficace de séparation/purification d'hydrogène représente une nécessité primordiale pour améliorer les rendements de production des systèmes énergétiques futurs. En effet, le procédé de reformage classique de production d'hydrogène conduit à un mélange complexe de gaz à haute température (au-delà de 523 K) qui limite l'utilisation de H2 dans diverses applications. La réalisation de membranes hautement sélectives à l'hydrogène apparaît alors comme un point essentiel pour augmenter la production d'hydrogène. Les membranes à base de silice ont largement été étudiée
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24

Daoudi, Meriem. "Performances et durabilité des membranes alternatives aux membranes PFSA." Electronic Thesis or Diss., Université de Lorraine, 2023. http://www.theses.fr/2023LORR0011.

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Le principal objectif de cette thèse est la recherche d'un compromis entre la durabilité, le coût et, à terme, la résistance à haute température des membranes ionomères utilisées dans les piles à combustible de type PEMFC (Proton Exchange Membrane Fuel Cell). À cet égard, le ionomère poly (éther éther cétone) sulfoné (sPEEK) a été choisi du fait de ses bonnes propriétés mécaniques et de sa tenue à haute température. Cependant, les membranes sPEEK offrent une faible stabilité chimique par rapport aux membranes PFSA (PerFluoroSulfonic Acid) de référence. Afin de lever ce verrou, deux approches o
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25

Zhang, Gong. "Modeling and characterization of mixed ionic-electronic conductor membranes for hydrogen separation." Diss., Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/19018.

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26

Morton, Robin Tanis. "Low-temperature separation of hydrogen and methane in SSF membranes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ38635.pdf.

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27

Guan, Jie. "Ceramic membranes of mixed ionic-electronic conductors for hydrogen separation." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/19423.

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28

O'Brien, Casey P. "Sulfur Poisoning of Pd and PdCu Alloy Hydrogen Separation Membranes." Research Showcase @ CMU, 2011. http://repository.cmu.edu/dissertations/76.

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Separation of high purity H2 from coal-derived syngas is a key unit process in next generation gasification processes. Dense Pd and Pd47Cu53 (mol%) alloy membranes are promising candidates for separating H2 from mixed gases due to their rare combination of high permeability and high selectivity to H2 separation. However, ppm concentrations of H2S, a coal gasification byproduct, can severely inhibit hydrogen transport across Pd and Pd47Cu53 membranes in the temperature range that the membrane would need to be operated in a gasification process (~500 to ~700 K). This thesis is an experimental in
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29

Vilar, Franca Rafael. "Perovskite microtubular membranes for pure hydrogen production from water splitting." Thesis, University of Newcastle upon Tyne, 2013. http://hdl.handle.net/10443/1933.

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The purpose of this thesis is to investigate the feasibility of producing hydrogen with microtubular membranes made of mixed ionic electronic conducting perovskite by membrane-based steam reforming. This process involves water splitting in one side of the membrane followed by oxygen ions transport across the membrane to react with methane in the membrane reaction side. The overall process produces two separate streams of pure hydrogen and syngas. Initial experiments were performed using temperature programmed redox (water oxidation and methane reduction) cycles to investigate the feasibility o
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30

Zheng, Zhenkun. "Synthesis and Characterization of Ultramicroporous Zeolitic Membranes for Hydrogen Separation." University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1213109431.

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31

Hinchliffe, Anthony Bernard. "The separation of hydrogen and carbon monoxide using polymer membranes." Thesis, Aston University, 1991. http://publications.aston.ac.uk/9756/.

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This work studies the development of polymer membranes for the separation of hydrogen and carbon monoxide from a syngas produced by the partial oxidation of natural gas. The CO product is then used for the large scale manufacture of acetic acid by reaction with methanol. A method of economic evaluation has been developed for the process as a whole and a comparison is made between separation of the H2/CO mixture by a membrane system and the conventional method of cryogenic distillation. Costs are based on bids obtained from suppliers for several different specifications for the purity of the CO
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32

Kim, Soojin Gavalas George R. "Chemical vapor deposition of permselective oxide membranes for hydrogen separation /." Diss., Pasadena, Calif. : California Institute of Technology, 1994. http://resolver.caltech.edu/CaltechETD:etd-12032007-142610.

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33

BORGOGNONI, FABIO. "Pure hydrogen production by reforming reactions through Pd-based membranes." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2014. http://hdl.handle.net/2108/214217.

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Hydrogen can be obtained from multiple sources, renewable and fossil fuels: research and technological innovations related to production from renewables (especially biomass) have increased in the last decades. However, at present, the most diffused and the less expensive source for hydrogen production remains the reforming of hydrocarbons, in particular methane. The hydrogen produced can be used in electrochemical devices, for example fuel cells, for the production of electrical energy with only water vapor and heat as byproducts. The use of hydrogen as an alternative to traditional energy sou
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34

Mao, Visot. "Nouveaux matériaux à conduction mixte protonique-électronique : Développement de membranes sélectives destinées à la séparation de l'hydrogène." Thesis, Montpellier, 2016. http://www.theses.fr/2016MONTT189/document.

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La formulation de matériaux à conduction mixte protonique-électronique (MIEC-H+) performants constituerait une avancée majeure pour le développent d’applications liées au vecteur hydrogène. En particulier cette classe de matériaux constitue une alternative prometteuse aux membranes métalliques ou poreuses pour les dispositifs dédiés de la séparation de l’hydrogène. L’objectif de ce travail de thèse a ainsi été de développer, de caractériser des matériaux présentant des conductivités suffisantes pour l’application visée, de mettre en forme des membranes et d’évaluer leurs performances.La premiè
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35

Marshall, Aaron. "Electrocatalysts for the oxygen evolution electrode in water electrolysers using proton exchange membranes : synthesis and characterisation." Doctoral thesis, Norwegian University of Science and Technology, Faculty of Natural Sciences and Technology, 2005. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-774.

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<p>Electrocatalysts based on IrO<sub>2</sub> have been synthesised and characterised using a wide range of techniques. These oxide materials were primarily developed as oxygen evolution electrocatalysts for proton exchange membrane (PEM) water electrolysis. This development has enabled high performances to be achieved in a PEM water electrolysis cell. Overall the best result was obtained with an Ir<sub>0.6</sub>Ru<sub>0.4</sub>O<sub>2</sub> anode and 20 wt% Pt/C cathode, with a cell voltage of 1.567 V at 1 A cm<sup>−2</sup> and 80 °C when using Nafion 115 as the electrolyte membrane. This repr
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36

Pomerantz, Natalie. "SULFUR POISONING AND TOLERANCE OF HIGH PERMEANCE Pd/Cu ALLOY MEMBRANES FOR HYDROGEN SEPARATION." Digital WPI, 2010. https://digitalcommons.wpi.edu/etd-dissertations/366.

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" This work investigated the long-term stability of sulfur tolerant Pd/Cu alloy membranes for hydrogen separation by performing characterizations lasting several thousand hours in H2, He and H2S/H2 atmospheres ranging in concentration from 0.2 – 50 ppm and temperatures ranging from 250 - 500ºC. Two methods were used for fabricating the Pd/Cu membranes so that the sulfur tolerant fcc alloy would remain on the surface and minimize the decrease in hydrogen permeance inherent with fcc Pd/Cu alloys. The first method consisted of annealing a Pd/Cu bi-layer at high-temperatures and the second consi
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Deveau, Nicholas D. "Microkinetics of Hydrogen Permeation through Dense Solid and Liquid Metal Membranes." Digital WPI, 2017. https://digitalcommons.wpi.edu/etd-dissertations/469.

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Hydrogen separation membranes could be an enabling technology in a hydrogen economy. A comprehensive microkinetic model for hydrogen permeation was developed to expand the ability to predict hydrogen flux through various potential dense metal (solid and liquid) membrane candidates over a wide range of operating conditions. The molecular steps in the assumed mechanism, i.e., surface adsorption, dissociation, infiltration, and bulk diffusion, are adopted from the literature. The limiting assumptions made normally in the literature models, however, were avoided to develop a more comprehensive and
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38

shah, champaklal sanket. "Pure Silica Sodalite as a Building Block for Hydrogen Separation Membranes." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1331569342.

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39

Long, Tyler Richard. "Synthesis of polymers with the potential to release H2S: polydicyclopentadiene nanoporous membranes." Diss., University of Iowa, 2014. https://ir.uiowa.edu/etd/4682.

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This thesis discuses two very different projects. In the first project, synthesizing a polymer with the potential to release H2S. This was accomplished through the copolymerization of L-lactide and lactide monomers that has been functionalized with 4-hydroxythiobenzamide which is known to release H2S in vivo. The synthesis of the functionalized monomer required the development of a new method to attach functional groups to a derivative of L-lactide, which involved the addition of a thiol to an alpha- beta-unsaturated lactide using catalytic I2. After polymerization, the molecular weight of the
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40

Iarikov, Dmitri D. "Novel inorganic membranes for gas separation." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/31238.

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A literature survey was performed to evaluate the state-of-the-art membrane systems for CO2/CH4 separation which is critical in the natural gas industry. The systems that were reviewed included zeolite, carbon, polymeric, mixed matrix, amorphous silica, and supported ionic liquid membranes. Supported ionic liquid CO2/CH4 selective membranes were synthesized in our laboratory by applying room temperature ionic liquids (RTILs) to porous inorganic α-alumina supports. The supported ionic liquid membranes (SILMs) displayed CO2 permeance of 1x10-9 to 3x10-8 mol m-2 s-1 Pa-1 and CO2/CH4 selectivi
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41

Friebe, Sebastian [Verfasser]. "Membranes based on metal-organic frameworks (MOFs) or zeolites and new membrane concepts for hydrogen purification / Sebastian Friebe." Hannover : Technische Informationsbibliothek (TIB), 2017. http://d-nb.info/1137060638/34.

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42

Lee, Doo-hwan. "Studies on Hydrogen Selective Silica Membranes and the Catalytic Reforming of CH₄ with CO₂ in a Membrane Reactor." Diss., Virginia Tech, 2003. http://hdl.handle.net/10919/28543.

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In this work the synthesis, characterization, and gas transport properties of hydrogen selective silica membranes were studied along with the catalytic reforming of CH4 with CO2 (CH4 + CO z 2 CO + 2 H2) in a hydrogen separation membrane reactor. The silica membranes were prepared by chemical vapor deposition (CVD) of a thin SiO2 layer on porous supports (Vycor glass and alumina) using thermal decomposition of tetraethylorthosilicate (TEOS) in an inert atmosphere. These membranes displayed high hydrogen permeances (10-8 - 10-7 mol m-2 s-1 Pa-1) and excellent H2 selectivities (above 99.9 %) ov
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43

Ling, Chen. "First-principles study of palladium-based metal alloys as hydrogen purification membranes." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31798.

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Thesis (Ph.D)--Chemical Engineering, Georgia Institute of Technology, 2010.<br>Committee Chair: Sholl, David; Committee Member: Agrawal, Pradeep; Committee Member: Alamgir, Faisal; Committee Member: Fuller, Tom; Committee Member: Jones, Christopher. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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Cao, Yang 1959. "Influence of structure of palladium and nickel based membranes on hydrogen permeation." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=82838.

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The effects of Ni, Pd and Pd77Ag23 alloy membrane microstructures on hydrogen permeation have been investigated using the electrochemical permeation method. Deformation, annealing and electrodeposition have been used to modify the membrane microstructure.<br>The delay for hydrogen permeation in palladium is increased when the degree of deformation increases. The annealing of deformed palladium and Pd 77Ag23 at 250ºC or 850ºC accelerates hydrogen diffusion. The annealed metals release hydrogen more rapidly than the deformed metals. The Pd77Ag23 alloy needs more time to release hydrogen.
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Miyake, Chikahiro. "Scavenging Systems of Hydrogen Peroxide in Chloroplast Thylakoid Membranes and Algal Cells." Kyoto University, 1994. http://hdl.handle.net/2433/168925.

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本文データは平成22年度国立国会図書館の学位論文(博士)のデジタル化実施により作成された画像ファイルを基にpdf変換したものである<br>Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第5739号<br>農博第793号<br>新制||農||674(附属図書館)<br>学位論文||H6||N2672(農学部図書室)<br>UT51-94-J171<br>京都大学大学院農学研究科農芸化学専攻<br>(主査)教授 浅田 浩二, 教授 山田 康之, 教授 關谷 次郎<br>学位規則第4条第1項該当
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46

Romano, Matteo. "Development of metal/ceramic membranes for hydrogen purification at medium/high temperatures." Doctoral thesis, Università degli studi di Padova, 2017. http://hdl.handle.net/11577/3425352.

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The aim of the PhD activity (completely developed at CNR-ICMATE, Padova Research Area) was the development of planar and thin membranes for hydrogen separation for high temperature processes (400°C, metal membranes) and medium temperature processes (< 150°C, zeolite membranes), supported by porous ceramic substrates. Metallic membranes were deposited by PVD processes and zeolite membranes were grown onto ceramic substrate by hydrothermal synthesis. Advantages of PVD techniques are exposed in the PVD chapter of the thesis. PVD deposition is particularly useful in case of metal alloys, since co-
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47

Keita, Namory. "Lattice model simulation of hydrogen effect on palladium gold alloys used as purification metal membranes." Thesis, Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/44712.

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Hydrogen fuel is seen as energy of the future. Hydrogen molecules (H₂) are mostly used in the petrochemical industry and ammonia production. Hydrogen molecules are produced in large majority by steam reforming of hydrocarbons (methane). However, the purification of hydrogen is still a major factor in the cost of producing hydrogen. The range of membranes is large with advantages and drawbacks of each type of membrane. Among those membranes, metal alloy membranes are widely used because of their selectivity, durability, and resistance to poisoning. In the past, it was assumed an alloy once form
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48

Petek, Tyler Joseph. "An Investigation of PBI/PA Membranes for Application in Pump Cells for the Purification and Pressurization of Hydrogen." Case Western Reserve University School of Graduate Studies / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=case1320704555.

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49

Wu, Zhiqing. "Nanocarbon-based Photocatalysts: rGO/Metal Oxides Composite Membranes." Thesis, Griffith University, 2017. http://hdl.handle.net/10072/371317.

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It is widely accepted that graphene as well as reduced graphene oxide (rGO) have shown many superior properties such as electron mobility, excellent thermal and electrical conductivity, and large theoretical specific surface area. Previous research has shown significant enhancement of the photocatalytic property of semiconductors by compositing with rGO, which was largely attributed to the function of rGO or graphene as the electron sink. Moreover, the incorporation of graphene in photocatalytic systems also renders new format and new properties to photocatalysts. This MPhil project focuses on
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50

Tang, Zhong. "Synthesis and Modification of MFI-Type Zeolite Membranes for High Temperature Hydrogen Separation and Water Gas Shift Membrane Reactions." University of Cincinnati / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1283192205.

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