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Dissertations / Theses on the topic 'Hydrozen chloride'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Johnson, Jessica Mary. "Chlorine production from anhydrous hydrogen chloride in a molten salt electrolyte membrane cell." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/11246.

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2

Burke, Michael A. "Kinetics of the chlorate-hydrogen peroxide reaction in the formation of chlorine dioxide." Thesis, Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/11817.

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3

Crump, Brian R. "Kinetic study of the mechanism and side reactions in the hydrogen peroxide based production of chlorine dioxide." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/11322.

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4

Arevalo, Torres Andolsa. "Seasonal and inter-annual changes in the computation of Aura MLS HCl depletion and PSC-induced areas in the Antarctic polar stratosphere: 2005-2010 climate-chemistry assessment: the role of clouds in the Antarctic middle atmosphere." Thesis, University of Canterbury. Physics and Astronomy, 2012. http://hdl.handle.net/10092/6728.

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An examination of the seasonal and spatial distribution of Polar Stratospheric Clouds (PSCs) inferred from standard temperature profiles in the lower-middle atmosphere above Antarctica, as derived from the Earth Observing System (EOS) Aura Microwave Limb Sounder (MLS) satellite observations and NCEP/NCAR assimilations, is provided. Chemical volume mixing ratio (VMR) observations of EOS Aura MLS v2.2 hydrogen chloride (HCl) were used to show the interannual variability of PSC formation with respect to stratospheric chlorine partitioning during five Southern Hemisphere Antarctic seasons from 200

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5

Laveissiere, Bernard. "Contribution a l'etude de la corrosion du fer en milieu chlorure." Clermont-Ferrand 2, 1987. http://www.theses.fr/1987CLF2E397.

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Analyse des interactions entre les especes cathodiques adsorbees et la reaction anodique dans le domaines des potentiels proches du potentiel de corrosion. Mise en evidence du caractere inhibiteur de quelques composes de la famille des sels de phosphonium

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6

Akosman, C. "The removal of hydrogen chloride from hot gases." Thesis, University of Nottingham, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282676.

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7

Bechtel, Simon [Verfasser], and Kai [Gutachter] Sundmacher. "Development of a novel, energy effcient process for the gas-phase electrolysis of hydrogen chloride to chlorine / Simon Bechtel ; Gutachter: Kai Sundmacher." Magdeburg : Universitätsbibliothek Otto-von-Guericke-Universität, 2021. http://d-nb.info/1230058990/34.

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8

Cheung, Chiu Kee. "Dry scrubbing of hydrogen chloride gas using ceramic filters." Thesis, University of Surrey, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.362594.

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9

Raimondo, Joseph Valentino. "Intracellular chloride and hydrogen ion dynamics in the nervous system." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:0b69b409-46e5-41ac-88c4-f1cfaf08ad24.

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Synaptic transmission in the nervous system involves the activation of receptor proteins that permit rapid transmembrane fluxes of ions. Ionic gradients across the membrane determine the direction and driving force for the flow of ions and are therefore crucial in setting the properties of synaptic transmission. These ionic gradients are established by a variety of mechanisms, including pump and transporter proteins. However, the gradients can be affected by periods of neural activity, which in turn, are predicted to influence the properties of ongoing synaptic transmission. In this thesis I h

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10

Mehta, Anjum. "MICROMACHINED ELECTROCHEMICAL SENSORS FOR HYDROGEN PEROXIDE AND CHLORINE DETECTION." Master's thesis, University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3464.

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Hydrogen peroxide and chlorine detection is critical for many biological and environmental applications. Hydrogen peroxide plays important roles in a variety of fields including plant physiology, medical, environmental and biochemical applications. Its role in plant defense and signal transduction, diseases such as Parkinson's and Alzhemier's, industrial processes such as disinfection and wastewater treatment and biochemical enzymatic reactions is critical. Given the gamut of areas that hydrogen peroxide is a key component of; its detection assumes great importance. Similarly chlorine has long

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11

Lamy, Martin. "Mechanism of magnesium oxide chlorination by hydrogen chloride in a molten salt." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=33977.

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The reaction of HCl gas with MgO particles suspended in a molten salt containing magnesium chloride was studied. Chlorination experiments were carried out in a batch stirred tank reactor. The determination of the MgCl2 concentration as a function of chlorination time indicated that the chlorination of MgO to MgCl2 occured through an intermediate step. The intermediate species was assumed to be MgOHCl forming according to the reaction: MgOs+HCl g→MgOHCl d<br>Alkalimetric titration and thermal decomposition by injection of dry nitrogen were used to confirm the existence of MgOHCl in the molten s

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12

Angeloni, Alessandro. "Synthetic studies of hydrogen bonding in crystal structures of metal chloride complexes." Thesis, University of Bristol, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.399876.

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13

Thomassen, Magnus Skinlo. "Hydrogen-chlorine fuel cell for production of hydrochloric acid and electric power : chlorine kinetics and cell design." 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-775.

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<p>This thesis work is the continuation and final part of a joint project between the Department of Materials Technology, NTNU and Norsk Hydro Research Center in Porsgrunn, looking at the possibility of using fuel cells for production of hydrogen chloride and electric power. The experimental work encompass an evaluation of three hydrogen - chlorine fuel cell design concepts, development and implementation of a mathematical fuel cell model and a kinetic study of the chlorine reduction reaction. </p><p>The evaluated fuel cell designs consisted of a) a conventional PEM fuel cell applying a Nafion

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14

Gao, Yang. "Low-temperature removal of hydrogen chloride from flue gas using hydrated lime as a sorbent." Ohio : Ohio University, 1999. http://www.ohiolink.edu/etd/view.cgi?ohiou1175884147.

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15

Hawat, Toufic-Michel. "Etude des constituants de la stratosphère par spectrométrie infrarouge : héliostat couplé a un interféromètre en vue de l'exploitation des spectres atmosphériques." Valenciennes, 1996. https://ged.uphf.fr/nuxeo/site/esupversions/47ff0273-a089-46dd-8879-dfc34730704a.

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Les recherches dans le domaine de la physico-chimie atmosphérique se sont fortement développées ces dernières années afin de contribuer à une meilleure compréhension des phénomènes chimiques, dynamiques et radiatifs qui déterminent l'état actuel et peuvent affecter l'évolution future de l'atmosphère terrestre. Parmi les méthodes permettant d'accéder à la mesure des constituants atmosphériques, la spectrométrie de Fourier infrarouge sous ballon stratosphérique en utilisant le soleil comme source permet de détecter et de déduire les concentrations d'un grand nombre d'espèces à l'état de trace. C

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16

Humble, Jennifer. "A Study of On-line Analysis of Hydrogen Chloride Evolution During Coal Combustion." TopSCHOLAR®, 1996. http://digitalcommons.wku.edu/theses/804.

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This study involved the use of a thermogravimetric analyzer (TG) interfaced with a fourier transform infrared spectrometer (FTIR) and a mass spectrometer (MS) to determine the evolution of hydrogen chloride from coal during combustion as a function of the chlorine content and mesh size of the coal. It was determined that combined TG-FTIR and TG-MS systems offer the user an efficient means to investigate the mechanism of hydrogen chloride evolution from coal combustion. From the HC1 evolution profiles, it was determined that a good correlation exists between the chlorine content in the coal and

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17

Flemström, Andreas. "Solid molybdenum(II) chloride cluster compounds from a hydrogen bonding point of view /." Stockholm : Department of Inorganic Chemistry, Stockholm University, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-491.

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18

Sabbatini, Marie. "Quantification of hydrogen ion and chloride ion content in isocyanate by electrochemical methods." Thesis, University of Strathclyde, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.415365.

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19

Ephraim, Augustina. "Valorization of wood and plastic waste by pyro-gasification and syngas cleaning." Thesis, Ecole nationale des Mines d'Albi-Carmaux, 2016. http://www.theses.fr/2016EMAC0019/document.

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Les déchets de bois et de plastiques sont des ressources prometteuses pour la production du gaz de synthèse (syngaz) par la pyro-gazéification grâce à leurs disponibilités et leurs caractéristiques énergétiques. Cependant, le syngaz issu de ces déchets peut contenir des teneurs élevées en chlorure d’hydrogène (HCl) qui est corrosif et toxique et qui doit donc être éliminé. Premièrement, les expériences de pyrolyse des mélanges de bois de peuplier et de plastiques ont mis en évidence l’influence des plastiques sur les produits obtenus. En effet, le HDPE et PS augmentent resp

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20

Kalu, Eric Egwu. "Simultaneous electrosynthesis of alkaline hydrogen peroxide and sodium chlorate." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/28391.

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Simultaneous electrosynthesis of alkaline hydrogen peroxide and sodium chlorate in the same cell was investigated. The alkaline hydrogen peroxide was obtained by the electroreduction of oxygen in NaOH on a fixed carbon bed while the chlorate was obtained by the reaction of anodic electrogenerated hypochlorite and hypochlorous acid in an external reactor. An anion membrane, protected on the anode side with an asbestos diaphragm was used as the separator between the two chambers of the cell. The effects of superficial current density (1.2 - 2.4 kA m⁻²), sodium hydroxide concentration (0.5 - 2.0

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21

D\'Imperio, Seth. "Microbial interactions with arsenite, hydrogen and sulfide in an acid-sulfate-chloride geothermal spring." Thesis, Montana State University, 2008. http://etd.lib.montana.edu/etd/2008/d'imperio/D'ImperioS0508.pdf.

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The work presented in this thesis investigated the importance of hydrogen, sulfide and arsenite in microbial community structure and function within a model Acid-Sulfate-Chloride (ASC) spring in Yellowstone National Park. Previous studies in this spring found that microbial arsenite [As(III)] oxidation is absent in regions of the spring outflow channel where H2S exceeds ~5 Î¼M. Ex situ assays with microbial mat samples demonstrated immediate As(III) oxidation activity when H2S was absent or in low concentrations, suggesting the presence of functional As(III) oxidase enzymes in reg

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22

Kemp, Dian. "Technical evaluation of the copper chloride water splitting cycle / D. Kemp." Thesis, North-West University, 2011. http://hdl.handle.net/10394/6862.

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The global energy sector is facing a crisis caused by the increasing demand for energy. Non-renewable energy sources, such as fossil fuels produce greenhouse gases that are largely blamed for climate change. The Kyoto protocol requires industrialised nations to reduce their collective greenhouse gas emissions. Hydrogen as an alternative fuel can serve as a substitute. Hydrogen production is expensive and the gas is largely derived from fossil fuels by a process that releases large quantities of greenhouse gases. In South Africa work on hydrogen production was first done on the Hybrid Sulphur c

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23

Mapamba, Liberty Sheunesu. "Simulation of the copper–chlorine thermochemical cycle / Mapamba, L.S." Thesis, North-West University, 2011. http://hdl.handle.net/10394/7052.

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The global fossil reserves are dwindling and there is need to find alternative sources of energy. With global warming in mind, some of the most commonly considered suitable alternatives include solar, wind, nuclear, geothermal and hydro energy. A common challenge with use of most alternative energy sources is ensuring continuity of supply, which necessitates the use of energy storage. Hydrogen has properties that make it attractive as an energy carrier. To efficiently store energy from alternative sources in hydrogen, several methods of hydrogen production are under study. Several literature s

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24

Raston, Paul L. "Spectroscopy and dynamics of rare gas and chlorine atoms in solid hydrogen." Laramie, Wyo. : University of Wyoming, 2007. http://proquest.umi.com/pqdweb?did=1338905001&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.

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25

Nylén, Linda. "Influence of the electrolyte on the electrode reactions in the chlorate process." Doctoral thesis, KTH, Tillämpad elektrokemi, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4681.

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The chlorate process is very energy intensive and a major part of the production costs are for electrical energy. Since the electricity prices are constantly increasing and may also vary periodically, the chlorate plants may be forced to adjust their production rate to the price at each moment in order to minimise their costs. Variation of current load requires increased knowledge regarding the electrode behaviour in a wide current range. In this thesis, the aim was to study the impact of the electrolyte on the electrode reactions in order to reduce the energy consumption. The work has mainly

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26

Zhan, Rijing. "Kinetic study of low temperature sulfur dioxide and hydrogen chloride removal using calcium-based sorbents." Ohio : Ohio University, 1999. http://www.ohiolink.edu/etd/view.cgi?ohiou1181166008.

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27

Kim, Sae Wung. "Measurement of Pernitric Acid, Hydrogen Chloride, and Sulfur Dioxide during the Intercontinental Chemical Transport Experiment Campaign." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19729.

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This study presents airborne measurements of HO2NO2, HCl and SO2 using chemical ionization mass spectrometry (CIMS) during the Intercontinental Chemical Transport Experiment (INTEX) field campaign, an intensive study to characterize the chemical composition of the troposphere in the eastern United States, Mexico City, and the North Pacific which is the outflow region of Asia. The first direct in situ measurements of HO2NO2 were made in the free troposphere over the eastern U.S. during summer 2004. The highest mean mixing ratio of 76 pptv (median = 77 pptv, = 39 pptv) was observed in the alt

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28

Chisholm, Paul Norman. "Dry absorption of hydrogen chloride and sulfur dioxide by calcium-based sorbents from humidified flue gas /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.

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29

Reyes-Natal, Meralys. "Modeling and growth of the 3C-SiC heteroepitaxial system via chloride chemistry." [Tampa, Fla] : University of South Florida, 2008. http://purl.fcla.edu/usf/dc/et/SFE0002691.

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30

Stevens, Jefferson Allen. "Fundamental aspects of hydrogen peroxide bleaching of kraft pulp in ECF and TCF bleaching sequences." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/10269.

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31

Agrawal, Chhaya. "The effectiveness of TAED on peroxide bleaching." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/12126.

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32

Pouyet, Frédéric. "Nouvelles conditions d'utilisation de l'ozone dans le blanchiment des pâtes cellulosiques. Application à la mise au point d'un procédé de blanchiment "vert"." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENI032.

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Le manque de compréhension des réactions liées à l'utilisation de l'ozone a constitué un clair frein au développement de séquences de blanchiment non-chlorées efficaces. Considéré comme un élément central des séquences TCF face aux séquences ECF comprenant du dioxyde de chlore, l'ozone ne permettait pas l'obtention de pâtes cellulosiques de qualité aussi élevée. Le but de ce travail est l'élaboration de séquences de blanchiment non-chlorées permettant l'obtention d'un produit final de haute qualité. Ce type de séquence pourrait présenter de nombreux avantages, parmi lesquels sont envisagés des

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33

Bataillon, Christian. "Application de l'analyse spectrale du bruit electrochimique a l'etude de la corrosion par piqures des alliages d'aluminium." Paris 6, 1987. http://www.theses.fr/1987PA066251.

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Application de l'analyse du bruit en potentiel genere par la piquration des alliages d'aluminium a la caracterisation de leur resistance a cette forme de corrosion. Presentation de quelques considerations phenomenologiques concernant les fluctuations de potentiel. Presentation d'un mecanisme de la propagation des piqures sur les alliages d'aluminium

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34

González, Martínez Isaí [Verfasser], and Kai [Akademischer Betreuer] Sundmacher. "Hydrogen chloride electrolysis in a polymer-electrolyte-membrane reactor with oxygen-depolarized cathode / Isaí González Martínez. Betreuer: Kai Sundmacher." Magdeburg : Universitätsbibliothek, 2015. http://d-nb.info/1080560793/34.

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35

Edwards, Jessica Corinne. "Investigation of Color Removal by Chemical Oxidation for Three Reactive Textile Dyes and Spent Textile Dye Wastewater." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/34091.

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This research investigated the efficacy of chlorine dioxide (ClO2), ultraviolet (UV) irradiation, UV in combination with chlorine dioxide (UV/ClO2), and UV in combination with hydrogen peroxide (UV/H2O2) for decolorizing three reactive azo dyes (sultan red, indigo blue and cypress green) and treated textile-manufacturing wastewater. The objective was to determine the best treatment for reducing color to the Virginia Pollutant Discharge Elimination System (VPDES) permit level of 300 American Dye Manufacturers Institute (ADMI) units. The effects of the three chemical oxidation treatments provid

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36

Tokmakov, Pavel. "Untersuchung zur Chemie des Deacon-Prozesses in Salzschmelzen." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2018. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-236470.

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HCl ist ein Nebenprodukt bei vielen organischen Chlorierungsprozessen. Die Aufarbeitung von HCl wäre wirtschaftlich sinnvoll. Eine der möglichen Optionen ist die Rückgewinnung des Chlors durch die katalytische HCl-Oxidation mit O2 (Deacon-Prozess). Das Hauptziel dieser Arbeit war es, die katalytische Aktivität von kupferchlorid-haltigen Schmelzen in Abhängigkeit von der Temperatur und dem Verhältnis der Reaktionsgase zu untersuchen. Dazu wurden Versuche unter stationären und instationären Reaktionsbedingungen im Temperaturintervall zwischen 400 und 500 °C durchgeführt. Für das bessere Verständ

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37

Rey-Hanot, Laurence. "Adsorption de gaz traces sur la glace : application à la chimie des nuages et du manteau neigeux." Université Joseph Fourier (Grenoble), 1999. http://www.theses.fr/1999GRE10063.

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Le but de ce travail est de contribuer a la comprehension des interactions entre les gaz traces et la glace, a la fois dans les nuages et dans la neige apres son depot au sol. Les gaz polaires tels que les acides, les aldehydes et les cetones peuvent interagir fortement avec la glace, notamment en s'adsorbant a sa surface. Dans les nuages, ce phenomene peut modifier la teneur atmospherique de ces composes et initier des reactions heterogenes, comme celles conduisant a la destruction de l'ozone stratospherique polaire. Dans la neige au sol, l'adsorption de gaz traces a la surface des cristaux v

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38

Qi, Letian, and Lihong Fu. "Effects of Choline Chloride, Urea and Their Deep Eutectic Solvents on the Modification of Leather - 155." Verein für Gerberei-Chemie und -Technik e. V, 2019. https://slub.qucosa.de/id/qucosa%3A34305.

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Content: The application of split leather is an important issue in leather industry as most of them was not properly treated and wasted. In this study the application of choline chloride (ChCl), urea (U) and corresponding deep eutectic solvents (DES) on the modification of thermal stability and mechanical strength of mink split leather was investigated. TGA and DSC results indicated DES treatment enhanced thermal stability of split leather, and ChCl treatment reduced the stability. While, U treatment provided a kinetic inhibition during the thermal-decomposition. In terms of the mechanical str

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39

Gustavsson, John. "In-situ activated hydrogen evolution from pH-neutral electrolytes." Doctoral thesis, KTH, Tillämpad elektrokemi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-95369.

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The goal of this work was to better understand how molybdate and trivalent cations can be used as additives to pH neutral electrolytes to activate the Hydrogen Evolution Reaction (HER). Special emphasis was laid on the chlorate process and therefore also to some of the other effects that the additives may have in that particular process. Cathode films formed from the molybdate and trivalent cations have been investigated with electrochemical and surface analytical methods such as polarization curves, potential sweep, Electrochemical Impedance Spectroscopy (EIS), current efficiency measurements

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40

Defoort, Françoise. "Etude thermodynamique et expérimentale du dépôt chimique en phase vapeur du phosphure d'indium." Grenoble INPG, 1986. http://www.theses.fr/1986INPG0126.

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Depot par la methode epitaxiale en phase vapeur aux hydrures (ph::(3)/h::(2)/hcl/in). Mise en evidence de la presence et du role des especes gazeuses dans le mecanisme de depot. Determination de la limite "croissance/decapage". Decomposition incomplete de la phosphine dans le reacteur

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41

Do, Tuyet-Trinh. "Thermal degradation of polyvinyl chloride blends / by Tuyet-Trinh Do." Thesis, Queensland University of Technology, 2000.

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42

Wang, Sheng. "Phosphorus-Containing Polymers, Their Blends, and Hybrid Nanocomposites with Poly(Hydroxy Ether), Metal Chlorides, and Silica Colloids." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/26789.

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Phosphorus-containing high performance polymers have been extensively studied during the last 10 years. These materials are of interest for a variety of optical and fire resistant properties, as well as for their ability to complex with the inorganic salts. This dissertation has focused on the nature of the phosphonyl group interactions with hydroxyl containing polymers, such as the poly(hydroxy ether)s. These may be considered linear models of epoxy resins and are also closely related to dimethacrylate (vinyl ester) matrix resins that are important for composite systems. It has been shown tha

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43

Aiteh, Hassan al. "Formation, structure et limites de detonation dans le bioxyde de chlore et dans l'azoture d'hydrogene." Paris 6, 1988. http://www.theses.fr/1988PA066624.

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44

Jordan, Glenn Thomas. "Reactions of The Singly Hydrogen Bridged Diborate Anions [B2H7]- and [B2(C4H8)2H3]- With Group 4 (Ti, Zr, Hf) Mettallocene Chlorides /." The Ohio State University, 1995. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487930304683982.

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45

Trembly, Jason P. "INVESTIGATION INTO THE EFFECTS OF TRACE COAL SYN GAS SPECIES ON THE PERFORMANCE OF SOLID OXIDE FUEL CELL ANODES." Ohio University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1178651707.

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46

Minnis, Rochelle J. "Comparison of the use of single and multiple oxidants on the generation of particulate matter in water distribution systems derived from groundwater sources containing hydrogen sulfide and dissolved organics." [Tampa, Fla] : University of South Florida, 2005. http://purl.fcla.edu/usf/dc/et/SFE0001390.

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47

Lavigne, André. "Oxydations cupro-catalysees des amines aliphatiques : etudes mecanistiques et applications synthetiques." Paris 6, 1987. http://www.theses.fr/1987PA066470.

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Preparation de nitriles a partir d'amines primaires et d'alpha -aminoacides. Les acides amines monosubstutitues rch(nh::(2))co::(2)h donnent le nitrile rcn, alors que les acides amines disubstitues rr'c(nh::(2))co::(2)h conduisent a l'azine rr'c=n-n=cr'r. Les mecanismes proposes font intervenir le cuivre (iii), forme in situ a partir du cuivre (i) et de l'oxygene

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48

Jeřábek, Lukáš. "Analyzátor vodného roztoku." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217742.

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This work deals with issues of detection chlorine, measurement pH, atmospheric pressure and temperature. The general aim is to study of the problem, the choice appropriate sensors and methods for detection, create schematic diagram and implementation of the analyzer. An integral part of wireless communication with the computer, susceptible the storage of date and makes it possible to further evalution.

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49

Trinh, Thanh. "Contribution à l'étude de la délignification et du blanchiment des pâtes cellulosiques par le bioxyde de chlore ou l'eau oxygénée dans un réacteur agité à alimentation programmée." Grenoble INPG, 1993. http://www.theses.fr/1993INPG0100.

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Cette these est consacree a l'etude de la delignification des pates cellulosiques par le bioxyde de chlore ou l'eau oxygenee dans le but d'ameliorer la selectivite de ces reactifs et de minimiser les rejets toxiques. L'etude comparative de la delignification et du blanchiment par le bioxyde de chlore montre que la phase d constituee des sous-phases: introduction progressive de clo#2 en milieu alcalin (ph10) et reaction en milieu acide (ph4,7) du chlorite precedemment forme est le meilleur procede. La cinetique de la reaction limitante de ce procede (sous-phase acide, reaction du chlorite) est

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50

Pecaut, Jacques. "Ingénierie cristalline de matériaux organo-minéraux pour l'optique non linéaire quadratique." Grenoble INPG, 1994. http://www.theses.fr/1994INPG0037.

Full text

Abstract:

Des chromophores non lineaires, derives de la pyridine, sont ancres dans des matrices minerales par un reseau de liaisons hydrogene courtes. Les sels remarquables que nous avons isole sont les dihydrogenoarseniate, chlorure et bromure de 2-amino-5-nitropyridinium dont les signaux de second harmonique sont equivalents ou superieurs a ceux du 3-methyl-4-nitropyridine-n-oxyde (pom). Les composes d'addition, chlorure de cadmium de la bis (4-nitropyridine-n-oxyde) et le bis (bromure mercurique) de la 4-nitropyridine-n-oxyde possedent des structures polaires dont la cohesion de l'entite non lineaire

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