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Etude De Loxydation De Lethanol Sur Electrode De Platine Platinee
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Book Synopsis Etude de l'oxydation de l'éthanol sur électrode de platine platinée by : Michel Martin (Dr ès sciences.)
Download or read book Etude de l'oxydation de l'éthanol sur électrode de platine platinée written by Michel Martin (Dr ès sciences.) and published by . This book was released on 1978 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Étude de l'oxydation de l'éthanol sur électrode de platine platiiiiinée by : Michel Martin
Download or read book Étude de l'oxydation de l'éthanol sur électrode de platine platiiiiinée written by Michel Martin and published by . This book was released on 1978 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Etude de l'oxydation de l'ethanol sur electrode de platine plat... by : Michel Martin
Download or read book Etude de l'oxydation de l'ethanol sur electrode de platine plat... written by Michel Martin and published by . This book was released on 1978 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Étude de l'oxydation de l'éthanol sur électrode de platine platiiiiinée by : Michel Martin
Download or read book Étude de l'oxydation de l'éthanol sur électrode de platine platiiiiinée written by Michel Martin and published by . This book was released on 1978 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Etude d'électrocatalyseurs dispersés à base de platine pour l'oxydation de l'éthanol en vue d'une application à une pile à combustible pour le véhicule électrique by : Fabien Delime
Download or read book Etude d'électrocatalyseurs dispersés à base de platine pour l'oxydation de l'éthanol en vue d'une application à une pile à combustible pour le véhicule électrique written by Fabien Delime and published by . This book was released on 1997 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'UTILISATION DE L'ETHANOL DANS UNE PILE A COMBUSTIBLE NECESSITE LA RECHERCHE DE CATALYSEURS PERMETTANT D'AUGMENTER LES COURANTS D'OXYDATION DE L'ALCOOL A BAS POTENTIEL ET DE DIMINUER L'EMPOISONNEMENT RENCONTRE AVEC LE PLATINE SEUL. DANS UN PREMIER TEMPS, DES ETUDES ONT ETE MENEES EN DEMI-PILE SUR DES ELECTRODES MODELES PT-NAFION. LA METHODE DE PREPARATION DES ELECTRODES A ETE OPTIMISEE VIS A VIS DE LA DISPERSION DU METAL. GRACE AUX CONDITIONS DETERMINEES PAR L'EMPLOI DE PLANS D'EXPERIENCE, IL EST POSSIBLE DE PREPARER DES ELECTRODES PT-NAFION DE FORTE RUGOSITE, SUR LESQUELLES L'ELECTROOXYDATION DE L'ETHANOL EST DECALEE VERS LES PLUS BAS POTENTIELS. PAR AILLEURS, L'ACTIVITE DE L'ELECTRODE PT-NAFION A ETE AUGMENTEE PAR L'EMPLOI DE CATALYSEURS BIMETALLIQUES PT-RU OU PT-SN. L'ETUDE D'ELECTRODES PT-SN-PEM PAR TEM A MONTRE QUE L'ETAIN EST PREFERENTIELLEMENT DEPOSE A LA SURFACE DE L'ELECTRODE, FORMANT DES PARTICULES PT-SN, DONT LA COMPOSITION ATOMIQUE ET LA STRUCTURE CRISTALLOGRAPHIQUE ONT ETE DETERMINEES. DANS UN SECOND TEMPS, DES ETUDES ONT ETE MENEES EN PILE ETHANOL-O#2 A MEMBRANE ECHANGEUSE DE PROTONS. LES COURBES DE POLARISATION ANODIQUE ONT MONTRE QUE LES COUPLES PT-RU ET PT-SN PERMETTENT UNE DIMINUTION CONSEQUENTE DE LA SURTENSION ANODIQUE, AMELIORANT D'AUTANT LES PERFORMANCE DE LA PILE ETHANOL-O#2.
Book Synopsis Etude de l'adsorption et électro-oxydation de l'éthanol sur électrodes de platine par spectroscopie de génération de la fréquence somme by : Janaina Fernandes Gomes
Download or read book Etude de l'adsorption et électro-oxydation de l'éthanol sur électrodes de platine par spectroscopie de génération de la fréquence somme written by Janaina Fernandes Gomes and published by . This book was released on 2007 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: The possible application of ethanol as a fuel for direct alcohol fuel cells continues to motivate research on the mechanisms of electro-oxidation of ethanol. In this work, the ethanol-platinum interface in acidic medium is investigated using infrared-visible SFG spectroscopy in order to document the intermediates present during the electro-oxidation of ethanol. New evidences of adsorbed intermediates of ethanol oxidation on platinum, never before observed with conventional IR spectroscopy, are reported. Our results show that a secondary ethanol derivative, previously suggested, but never before unambiguously documented, and mono and bidentate acetate, eta2-acetaldehyde, acetyl and a molecular acetic acid derivative are active intermediates of ethanol oxidation in acidic medium. In addition, we report new evidences for the presence of an ethoxy intermediate. The results obtained here also confirm the presence of previously observed ethanol oxidation intermediates: adsorbed CO and a tertiary ethanol derivative. Moreover, we explored the effects of the atomic surface structure of the electrode, alcohol concentration and electrode potential on the mechanism of the adsorption and electro-oxidation of ethanol on platinum. These effects are analyzed through the vibrational spectra of interfacial adsorbed intermediates. Comparison with the adsorption of other simple reactants (methanol, acetaldehyde and acetic acid) in acid medium indicate that even at low potential the platinum surface is highly reactive, producing similar intermediates for all reactants.
Book Synopsis Oxydation électrocatalytique de l'éthanol sur des électrodes dispersées à base de platine by : Abdelaziz Rezzouk
Download or read book Oxydation électrocatalytique de l'éthanol sur des électrodes dispersées à base de platine written by Abdelaziz Rezzouk and published by . This book was released on 1994 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'UN DES ENJEUX DE CE SIECLE EST LE DEVELOPPEMENT DE SOURCES AUTONOMES D'ENERGIE, NOTAMMENT POUR LES VEHICULES ELECTRIQUES. LA PILE A COMBUSTIBLE DIRECTE PARAIT UNE SOLUTION IDEALE. LE COMBUSTIBLE LIQUIDE LE PLUS ETUDIE TANT DU POINT DE VUE FONDAMENTAL QUE DU POINT DE VUE APPLIQUE, EST LE METHANOL. CEPENDANT, UN AUTRE ALCOOL POTENTIELLEMENT INTERESSANT A ETE CONSIDERE: L'ETHANOL. IL S'AGISSAIT DE PREPARER ET D'EVALUER LES PROPRIETES ELECTROCATALYTIQUES D'ELECTRODES MODIFIEES A BASE DE PLATINE EN EXPLOITANT LA STRUCTURE POREUSE D'UN POLYMERE CONDUCTEUR. DANS UN PREMIER TEMPS, ON A PREPARE DES ELECTRODES AVEC DU PLATINE INCORPORE DANS LE POLYMERE CONDUCTEUR. LES RESULTATS OBTENUS MONTRENT QUE LES CONDITIONS EXPERIMENTALES UTILISEES PERMETTENT L'OBTENTION DE DISPERSIONS IMPORTANTES DU PLATINE ET PAR CONSEQUENT UNE BONNE ACTIVITE ELECTROCATALYTIQUE VIS-A-VIS DE L'OXYDATION DE L'ETHANOL. LES DENSITES DE COURANT OBTENUES SUR CE SYSTEME SONT PLUS IMPORTANTES QUE CELLES OBTENUES SUR LE PLATINE MASSIF, ET LE POTENTIEL DU DEBUT D'OXYDATION EST DECALE VERS LES POTENTIELS PLUS NEGATIFS (D'ENVIRON 200 MV). DANS UN SECOND TEMPS, DES CATALYSEURS BIMETALLIQUES ET PLURIMETALLIQUES A BASE DE PLATINE ONT ETE PREPARES. AINSI, LES CATALYSEURS PT-SN, PT-RU ET PT/SN-RU ONT CONFIRME L'EFFET PROMOTEUR DE L'ETAIN ET DU RUTHENIUM SUR L'OXYDATION ELECTROCATALYTIQUE DE L'ETHANOL. EN EFFET, SUR CES CATALYSEURS, L'ELECTROOXYDATION DE L'ETHANOL DEBUTE PLUS TOT QUE SUR LE PLATINE (DECALAGE DE 300 MV EN PRESENCE D'ETAIN), ET ON CONSTATE UNE AUGMENTATION DES DENSITES DE COURANT. L'ETUDE, PAR SPECTROSCOPIE INFRA-ROUGE A TRANSFORMEE DE FOURIER, A PERMIS L'IDENTIFICATION DES INTERMEDIAIRES REACTIONNELS ET A PERMIS DE CONSTATER QUE LES PHENOMENES D'EMPOISONNEMENT, RENCONTRES AVEC LE PLATINE MASSIF, SONT GRANDEMENT DIMINUES
Book Synopsis Oxydation électrocatalytique de l'éthanol sur le platine et l'or by : Marie-Christine Maunier-Morin
Download or read book Oxydation électrocatalytique de l'éthanol sur le platine et l'or written by Marie-Christine Maunier-Morin and published by . This book was released on 1988 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Etude cinétique de l'oxydation électrocatalytique de l'éthanol en milieu aqueux by : HAYAT.. HALIM HITMI
Download or read book Etude cinétique de l'oxydation électrocatalytique de l'éthanol en milieu aqueux written by HAYAT.. HALIM HITMI and published by . This book was released on 1992 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: CETTE ETUDE CONCERNE L'OXYDATION ELECTROCATALYTIQUE DE L'ETHANOL, ET DE SES PRODUITS D'OXYDATION SUR LE PLATINE, MODIFIE OU NON PAR DES ADATOMES. LE BUT EST DE COMPRENDRE LA CINETIQUE DE LA REACTION D'OXYDATION ELECTROCHIMIQUE, EN UTILISANT A LA FOIS DES METHODES ELECTROCHIMIQUES ET DES METHODES ANALYTIQUES (CHROMATOGRAPHIE LIQUIDE ET EN PHASE GAZ), QUI PERMETTENT DE SUIVRE AU COURS DU TEMPS LA CONCENTRATION DES PRODUITS FORMES. L'EVALUATION DE CERTAINS PARAMETRES CINETIQUES TELS QUE LA VITESSE DE REACTION, LA CONSTANTE DE VITESSE, AINSI QUE LE NOMBRE D'ELECTRONS EXPERIMENTAL OU L'ORDRE DE LA REACTION, A PERMIS DE CORRELER LES RESULTATS DE CINETIQUE FORMELLE AVEC CEUX OBTENUS PAR LES METHODES ELECTROCHIMIQUES
Book Synopsis Elemental Speciation in Human Health Risk Assessment by : P. Apostoli
Download or read book Elemental Speciation in Human Health Risk Assessment written by P. Apostoli and published by World Health Organization. This book was released on 2006 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: Definitions of species and speciation - - Strructural aspects of speciation - - Analytical techniques and methodology - - Bioaccessibility and bioavailability - - Toxicokinetics and biological monitoring - - Molecular and cellular mechanisms of metal toxicity - - Health effects - - Conclusions and recommendations.
Download or read book ICREEC 2019 written by Ahmed Belasri and published by Springer Nature. This book was released on 2020-06-10 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.
Download or read book Exchange Reactions written by and published by . This book was released on 1965 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Chemistry of Ruthenium by : E.A. Seddon
Download or read book The Chemistry of Ruthenium written by E.A. Seddon and published by Elsevier. This book was released on 2013-10-22 with total page 1414 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Chemistry of Ruthenium is concerned with the chemistry of ruthenium, with emphasis on synthesis and structure. The discussion spans a wide range of fields, from coordination chemistry and organometallic chemistry to structural chemistry (of both molecular and extended lattices), electrochemistry and photochemistry, as well as kinetics and spectroscopy. Comprised of 15 chapters, this book begins with an introduction to the discovery and early history of ruthenium, along with its extraction and purification, isotopes, physical and chemical properties, and applications. The discussion then turns to the concept of oxidation state and a scheme for systematizing descriptive inorganic chemistry together with its applicability to ruthenium chemistry. Subsequent chapters focus on the chemistry of ruthenium(VIII), ruthenium(VII), ruthenium(VI), ruthenium(V), ruthenium(IV), ruthenium(III), ruthenium(II), ruthenium(I), and ruthenium(0). The book also considers ruthenium carbonyl clusters and nitrosyls before concluding with a review of the photophysics and photochemistry of tris(diimine)ruthenium(II) complexes. This monograph will be useful to students, practitioners, and researchers in the field of inorganic chemistry, as well as those who are interested in the chemistry of ruthenium.
Book Synopsis Masters Theses in the Pure and Applied Sciences by : Wade H. Shafer
Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer. This book was released on 1985-03 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1 957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 28 (thesis year 1 983) a total of 10,661 theses titles from 26 Canadian and 197 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 28 reports theses submitted in-1983, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.
Book Synopsis Electrochemistry in Ionic Liquids by : Angel A. J. Torriero
Download or read book Electrochemistry in Ionic Liquids written by Angel A. J. Torriero and published by Springer. This book was released on 2015-07-17 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: This set of two books dedicated to presenting the latest novel and advanced research from around the world in this exciting area. These books highlight the important properties of electrochemistry in ionic liquids – as opposed to the more commonly used aqueous and organic environments – and the many applications. Readers will find 20 chapters gathered in two books: The first volume critically discusses electrode-electrolyte interfacial processes, reference electrodes, ultramicroelectrode voltammetry and scanning electrochemical microscopy, semi-integral and convolution voltammetry, and small-angle X-ray scattering coupled with voltammetry. The structure and properties of protic ionic liquids, deep-eutectic solvents, task-specific ionic liquids, polymeric ion gels, and lithium-ion solvation, useful for electrochemical application is also critically discussed The second volumes major topics covered in this book include electrodeposition and electroless deposition, voltammetry of adhered microparticles, electrochemistry of organic and organometallic compounds, electrocatalytic reactions, oxygen reduction reaction, ionic liquids in surface protection and lubrication, current industrial application of ionic liquids, and challenges, issues and recycling methods of ionic liquids in industrial developments.
Book Synopsis Charles Dickens by : John Camden Hotten
Download or read book Charles Dickens written by John Camden Hotten and published by . This book was released on 1968 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analytical Methods in the Nuclear Fuel Cycle by :
Download or read book Analytical Methods in the Nuclear Fuel Cycle written by and published by . This book was released on 1972 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt:
