Academic literature on the topic 'Basicité'

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Journal articles on the topic "Basicité"

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Bardez, Élisabeth. "L’acido-basicité." Bulletin de la Sabix, no. 50 (May 15, 2012): 15–29. http://dx.doi.org/10.4000/sabix.1044.

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Berthelot, Michel, Jean-Francois Gal, Maryvonne Helbert, Christian Laurence, and Pierre-Charles Maria. "Chimiométrie de la basicité." Journal de Chimie Physique 82 (1985): 427–32. http://dx.doi.org/10.1051/jcp/1985820427.

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Agbodan, Kokou Agbékonyi, Oudjaniyobi Simalou, Gneiny Whad Tchani, and Koffi Jondo. "Etude de l’influence de la basicité sur l’enthalpie de réaction des sels N-méthoxycarbonyl-(oxy)-pyridiniums." International Journal of Biological and Chemical Sciences 14, no. 4 (2020): 1489–98. http://dx.doi.org/10.4314/ijbcs.v14i4.26.

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Les hétérocycles sont importants, aussi bien dans les domaines biologique, médicinal et thérapeutique (vitamines, hormones, antibiotiques, etc), que dans le secteur industriel et technologique (inhibiteurs de corrosion, colorants, agents stabilisants, pesticides, herbicides. Les chloroformiates ou chlorocarbonates sont les esters dérivés de l’acide chloroformique. La chimie des N-oxydes hétérocycliques (pyridine et N-oxydes) a connu un important développement au cours des dernières années. L’objectif principal du présent travail est l’étude de l’action du métoxycarbonylchloride sur la pyridine
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Berthelot, M., G. Grabowski, and C. Laurence. "Echelles spectroscopiques de basicité. Influence du milieu." Spectrochimica Acta Part A: Molecular Spectroscopy 41, no. 5 (1985): 657–60. http://dx.doi.org/10.1016/0584-8539(85)80171-9.

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Raczyńska, Ewa D., Christian Laurence, and Michel Berthelot. "Basicité de liaison hydrogène de formamidines substituées sur l'azote imino." Canadian Journal of Chemistry 70, no. 8 (1992): 2203–8. http://dx.doi.org/10.1139/v92-276.

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The basicity of the hydrogen bonds of formamidines 1–19 was measured by means of the formation constant KHB of their complexes with p-fluorophenol and the frequency shift Δν(OH) of methanol hydrogen-bonded to 1–19. The study of the ν(C=N) band shows that hydrogen bonding takes place with the imino nitrogen atom. On the hydrogen-bonding basicity scale, the formamidines appear to be more basic than the corresponding amides and pyridines, and as basic as the imidazoles. The field effect of electron-withdrawing substituents and the steric effect of bulky alkyl groups on the imino nitrogen atom mar
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Teulade, Marie-Paule, Philippe Savignac, Elie Elia Aboujaoude та Noël Collignon. "Carbanions phosphonates α-lithiés: synthèse, basicité comparée et stabilité à l'autocondensation". Journal of Organometallic Chemistry 312, № 3 (1986): 283–95. http://dx.doi.org/10.1016/0022-328x(86)80314-x.

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Graton, Jérôme, François Besseau, Michel Berthelot, Ewa D. Raczynska, and Christian Laurence. "L'échelle pKHB de basicité de liaison hydrogène des amines tertiaires aliphatiques." Canadian Journal of Chemistry 80, no. 10 (2002): 1375–85. http://dx.doi.org/10.1139/v02-176.

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The hydrogen bond acceptor strength of 40 tertiary amines has been measured by Fourier transform – infrared (FTIR) spectrometry from their 1:1 complexation constant towards 4-fluorophenol in CCl4 at 25°C (the pKHB scale). Also measured was the frequency shift, Δν(OH), of the ν(OH) band of methanol hydrogen-bonded to these amines. The comparison of the thermodynamic hydrogen bond basicity scale, pKHB, with the spectroscopic one, Δν(OH), and with the Brønsted pKa scale, points to the great sensitivity of pKHB to steric effects. The pKHB scale of tertiary amines extends from 2.71 for quinuclidine
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Joud, J. C., J. P. Petit, and M. Mantel. "Caractérisations électrochimiques de l’acido-basicité des surfaces métalliques passivables : application aux aciers inoxydables." Revue de Métallurgie 94, no. 5 (1997): 643–54. http://dx.doi.org/10.1051/metal/199794050643.

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Jasienska, S., A. Ledzki, and J. Orewczyk. "Contribution à l’étude des propriétés physico-chimiques et de la composition d’agglomérés de basicité élevée." Revue de Métallurgie 93, no. 1 (1996): 43–54. http://dx.doi.org/10.1051/metal/199693010043.

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Maquestiau, A., Y. van Haverbeke, and R. N. Muller. "Equilibre Prototropique des Aryl- et Alkylisoxazoline-5-Ones. Influence de la Basicité des Milieux Aprotiques." Bulletin des Sociétés Chimiques Belges 83, no. 7-8 (2010): 263–69. http://dx.doi.org/10.1002/bscb.19740830708.

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Dissertations / Theses on the topic "Basicité"

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Fenyvesi, Jakab. "Etude de l'acido-basicité d'oxydes métalliques simples et supportés." Lyon 1, 1994. http://www.theses.fr/1994LYO10207.

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L'acido-basicite des supports a ete modifiee par l'ajout d'un deuxieme oxyde de nature variable et dans differentes proportions. L'acido-basicite a ete caracterisee par microcalorimetrie d'adsorption des molecules sondes et par test catalytique de conversion du propan-2-ol. Nous avons trouve des correlations entre: a, l'acido-basicite des oxydes dopes et quelques donnes physico-chimiques telles que l'electronegativite, la charge de l'oxygene, la charge et le rayon ionique et effet specifique des ions. B, l'acido-basicite des oxydes supportes ou mixtes et la theorie sur l'acidite selon seiyama.
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Bailly, Marie-Laurence. "Approche moléculaire de la chimie de coordination et de la réactivité des anions 02- d'oxydes alcalino-terreux : relation avec la basicite." Paris 6, 2003. http://www.theses.fr/2003PA066503.

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Graton, Jerome. "Basicité des Amines et de Nicotines : Liaison Hydrogène et Protonation." Phd thesis, Université de Nantes, 2001. http://tel.archives-ouvertes.fr/tel-00090950.

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La principale propriété des amines est leur basicité. Nous avons donc mesuré un type de basicité des amines non encore réellement étudié à ce jour, leur basicité de liaison H. Nous l'avons fait par la détermination des paramètres thermodynamiques, ∆G, ∆H et ∆S, de la réaction de formation de liaison H entre le 4-fluorophénol, et une centaine d'amines. Nous avons également déterminé l'échelle spectroscopique de basicité de liaison H, ∆ν(OH) et montrons que chacune des échelles ∆G, ∆H et ∆ν(OH) apporte sa contribution à la connaissance de la basicité des amines. L'étude de différents descripteur
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Vittoz, Christelle. "Étude de l'acido-basicité des surfaces par mouillabilité et XPS : application aux aciers inoxydables." Grenoble INPG, 1997. http://www.theses.fr/1997INPG0042.

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Les aciers inoxydables sont des materiaux caracterises en surface par une couche passive, protectrice vis-a-vis de la corrosion, dont la composition chimique et la structure varie en fonction de la composition de l'alliage et de l'histoire de l'echantillon (nature du recuit, du vieillissement, du traitement de surface). Dans de nombreux domaines d'applications, la connaissance des proprietes d'adhesion de ces surfaces est necessaire. L'objet de cette etude consiste de determiner en particulier les caracteristiques acido-basiques de ces surfaces. Pour cela, nous avons utilise une methode origin
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Pommier, Catherine. "Influence de la basicité de la zéolithe faujasite sur les propriétés du platine dispersé et sur son activité catalytique en oxydation du dichlorométhane." Paris 6, 2003. http://www.theses.fr/2003PA066264.

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Chizallet, Céline. "Nature et réactivité des sites basiques de l'oxyde de magnésium : rôle des hydroxyles : approche mixte expérimentale et théorique." Paris 6, 2006. http://www.theses.fr/2006PA066350.

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Abiuso, Maria. "Pentaalkylguanidines : étude par RMN de la basicité ; synthèse et activité catalytique de résiines polystyrène modifiées." Lyon 1, 1995. http://www.theses.fr/1995LYO10310.

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Ce travail a pour objectif l'elaboration de pentaalkylguanidines supportees sur polystyrene et l'etude de leur activite catalytique basique. Afin de mieux comprendre la relation entre la basicite et la structure de la guanidine, nous avons dans un premier temps, etudie par rmn du carbone 13, le mode d'association des pentaalkylguanidines avec des composes a hydrogene mobile. Cette technique nous a permis de mettre en evidence la formation simultanement au sel de guanidinium, d'un complexe mettant en jeu deux molecules d'acides. Les valeurs des constantes d'equilibre mises en jeu ont ete determ
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Goeppert, Alain. "[Sigma]-basicité et réactivité des petits alcanes en présence de superacides liquides et acides solides." Université Louis Pasteur (Strasbourg) (1971-2008), 2002. http://www.theses.fr/2002STR13045.

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Lopez, Sébastien. "Acido-basicité et hydroxylation/hydratation de surfaces d'aluminium : lien avec leur adhérence à un revêtement organique." Grenoble INPG, 1997. http://www.theses.fr/1997INPG0145.

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Les propriétés des oxydes de surface sur aluminium influencent la performance du métal en formabilité, résistance à la corrosion, aspect de surface, et adhésion de revêtements organiques. Le but de cette thèse est de montrer que la comparaison de diverses techniques d'analyses de surface entraîne une meilleure connaissance des surfaces d'aluminium. Les films passifs sur aluminium apparaissent habituellement sous forme de mélanges complexes d'oxydes, oxyhydroxydes et hydroxydes d'aluminium plus ou moins hydrates. L’hydroxylation / hydratation a été étudiée par spectroscopie infrarouge (ft-ir/ra
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Melang, Me Nze Vanessa. "Préparation de nouveaux matériaux pour l'élimination catalytique des composés organiques volatils." Thesis, Poitiers, 2016. http://www.theses.fr/2016POIT2272/document.

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Cette étude concerne la préparation de nouveaux matériaux pour l'élimination catalytique d'un composé organique volatil (COV) : l'acide acétique. La décomposition de cette molécule gazeuse conduit à la formation de produits nocifs tels que le CO2, l'acétone et le formaldéhyde. En présence d'oxygène, des études antérieures ont mis en évidence le caractère réfractaire de l'acide acétique en milieux aqueux. En phase gaz, la dégradation de la molécule est améliorée en présence de catalyseurs basiques et réductibles tels que les oxydes mixtes MgAl. Ces matériaux ont été synthétisés via les méthodes
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Books on the topic "Basicité"

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A, Auroux, ed. Acidity and basicity. Springer, 2008.

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Fraissard, Jacques, and Leonidas Petrakis, eds. Acidity and Basicity of Solids. Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-0986-4.

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Laurence, Christian. Lewis basicity and affinity scales: Data and measurement. John Wiley, 2010.

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Laurence, Christian. Lewis basicity and affinity scales: Data and measurement. Wiley, 2009.

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Laurence, Christian. Lewis basicity and affinity scales: Data and measurement. Wiley, 2009.

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Jean-François, Gal, ed. Lewis basicity and affinity scales: Data and measurement. Wiley, 2009.

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K, Tanaabe, and United States. National Aeronautics and Space Administration., eds. A new method of determining acid base strength distribution and a new acidity-basicity scale for solid catalysts: The strongest point, Ho. National Aeronautics and Space Administration, 1988.

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Pons, Michel, Jean-Charles Joud, and Marie-Geneviève Barthés-Labrousse. Physico-Chimie des Surfaces et Acido-Basicité. ISTE Editions Ltd., 2015.

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Cox, Brian G. Acids and Bases: Solvent Effects on Acid-Base Strength. Oxford University Press, Incorporated, 2013.

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Cox, Brian G. Acids and Bases: Solvent Effects on Acid-Base Strength. Oxford University Press, Incorporated, 2013.

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Book chapters on the topic "Basicité"

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Auroux, Aline. "Acidity and Basicity: Determination by Adsorption Microcalorimetry." In Acidity and Basicity. Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/3829_008.

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Garrone, Edoardo, and François Fajula. "Acidity and Basicity of Ordered Silica-based Mesoporous Materials." In Acidity and Basicity. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/3829_2007_015.

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Brunner, Eike, and Harry Pfeifer. "NMR Spectroscopic Techniques for Determining Acidity and Basicity." In Acidity and Basicity. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/3829_2007_016.

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Lercher, Johannes A., Andreas Jentys, and Axel Brait. "Catalytic Test Reactions for Probing the Acidity and Basicity of Zeolites." In Acidity and Basicity. Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/3829_2007_017.

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Barthomeuf, Denise. "Basicity in Zeolites." In Acidity and Basicity of Solids. Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-0986-4_7.

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Schofield, H., and J. Dwyer. "Historical Perspectives of Acidity and Basicity. Part 1: 4000 B.C. – 1800 A.D." In Acidity and Basicity of Solids. Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-0986-4_1.

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Moffat, J. B. "The Acidity and Basicity of Solids: Intrinsic Properties of the Surface, Its Structure and Composition." In Acidity and Basicity of Solids. Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-0986-4_10.

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Pfeifer, Harry. "Characterization of Brönsted and Lewis Acidity by Nuclear Magnetic Resonance Spectroscopy." In Acidity and Basicity of Solids. Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-0986-4_11.

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Doremieux-Morin, C. "Characterization of Brönsted Acidity of Solids by Rigid-Lattice Broad-Line 1H-NMR. Part 1: Methodology." In Acidity and Basicity of Solids. Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-0986-4_12.

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Heeribout, L., V. Semmer, P. Batamack, C. Doremieux-morin, and J. Fraissard. "Comparison of Different Zeolites Studied by Two Proton NMR Techniques: Broad-Line at 4 K and High Resolution MAS at 300 K." In Acidity and Basicity of Solids. Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-0986-4_13.

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Conference papers on the topic "Basicité"

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Isaksson, J., A. Andersson, and A. Lennartsson. "Effects of FeO/SiO2 ratio and optical basicity on viscosity and melt structure of FeO–SiO2–Al2O3–CaO–MgO–Cr2O3 melts." In 12th International Conference of Molten Slags, Fluxes and Salts (MOLTEN 2024) Proceedings. Australasian Institute of Mining and Metallurgy (AusIMM), 2024. http://dx.doi.org/10.62053/mhjc2933.

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The physico-chemical property, viscosity, is essential for pyrometallurgical processes and influences the settling rate of valuable metal droplets in slag, affecting the metal recovery. The copper slag from smelting furnaces typically contains between 1 and 2 wt per cent Cu, which equals to or is higher than in most sulfidic copper ores mined today, meaning the slag is a valuable resource for copper extraction. A low viscosity is desirable for slag-cleaning through a settling furnace where entrained droplets settle under gravity. One approach to control the viscosity is through the slag compos
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Maritsa, S., S. M. Masuka, and E. K. Chiwandika. "The recovery of pig iron from the Zimbabwean limonite-coal composite pellet." In 12th International Conference of Molten Slags, Fluxes and Salts (MOLTEN 2024) Proceedings. Australasian Institute of Mining and Metallurgy (AusIMM), 2024. http://dx.doi.org/10.62053/ughb9737.

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The iron and steel industry is experiencing an increase in the use of iron and steel commodities within societies, decarbonisation pressures, depletion of high iron ore grades and high energy consumption. This necessitates scrap metal recycling, low-grade ore utilisation using the induction or electric arc furnace to achieve the global target of net zero CO2 emission. The available high-quality scrap metal cannot sustain the steel industry but the world has unused hematite-goethite ores. It is the aim of this research that this resource be utilised using the induction furnace to sustain the st
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Jang, Taehyung, Sebok Lee, and Yoonsoo Pang. "Excited-state Proton Transfer Dynamics of Photoacids Confined inside the Reverse Micelles." In Frontiers in Optics. Optica Publishing Group, 2022. http://dx.doi.org/10.1364/fio.2022.jw5a.86.

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Excited-state proton transfer dynamics of photoacids becomes independent on the solvent basicity when confined in the small reverse micelles. Deprotonation and recombination dynamics of photoacids depend on the micelle size with the water and methanol cores.
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Jun, Y. J., G. H. Park, and J. H. Park. "Carbon distribution behaviour between molten iron and CaO-Al2O3-FeO-SiO2-MgO slag at 1873 K." In 12th International Conference of Molten Slags, Fluxes and Salts (MOLTEN 2024) Proceedings. Australasian Institute of Mining and Metallurgy (AusIMM), 2024. http://dx.doi.org/10.62053/uqzr8470.

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The carbon solubility of the CaO-Al2O3-FeO-SiO2-MgO slag, the main system formed in the Ruhrstahl-Heraeus (RH) vacuum degasser, was measured at 1873 K to understand the effect of slag compositions on the carbon contamination in the ultra-low carbon (ULC) steels. The stable form of carbon was demonstrated to be carbonate by plotting the log [(wt%C)/aC] ratio against the log p(O2) which ranged -11 < log p(O2,atm) < -9. The carbon solubility of the CaO-Al2O3-FeO-SiO2-MgO slag can be estimated using thermodynamic model. The distribution ratio of carbon increased with increasing concentration
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Utelbayeva, Madina B., and Kuralay A. Baiseitova. "About basicity of the eigenfunctions of the operator −u′″(−x)." In INTERNATIONAL CONFERENCE ON ANALYSIS AND APPLIED MATHEMATICS (ICAAM 2016). Author(s), 2016. http://dx.doi.org/10.1063/1.4959718.

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Choi, W. K., P. S. Song, B. Y. Min, W. Z. Oh, and C. H. Jung. "Melting Characteristics of the Stainless Steel Generated From the Uranium Conversion Plant." In The 11th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2007. http://dx.doi.org/10.1115/icem2007-7159.

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The partition ratio of cerium (Ce) and uranium (U) in the ingot, slag and dust phases has been investigated for the effect of the slag type, slag concentration and basicity in an electric arc melting process. An electric arc furnace (EAF) was used to melt the stainless steel wastes, simulated by uranium oxide and the real wastes from the uranium conversion plant in Korea Atomic Energy Research Institute (KAERI). The composition of the slag former used to capture the contaminants such as uranium, cerium, and cesium during the melt decontamination process generally consisted of silica (SiO2), ca
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Kaur, G., Amjotkaur, O. P. Pandey, and Vishal Kumar. "Optical basicity and polarizability for copper-zinc doped sol-gel glasses." In INTERNATIONAL CONFERENCE ON CONDENSED MATTER AND APPLIED PHYSICS (ICC 2015): Proceeding of International Conference on Condensed Matter and Applied Physics. Author(s), 2016. http://dx.doi.org/10.1063/1.4946251.

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Fu, Jinxiang, Haiqiu Liu, Xiangqing Ren, and Man Peng. "Partial Nitrification Regulated by Basicity in Low C/N Ratio Wastewater." In 2011 Second International Conference on Digital Manufacturing and Automation (ICDMA). IEEE, 2011. http://dx.doi.org/10.1109/icdma.2011.208.

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Ayad, Zahraa, Hussein Q. Hussein, and Ban A. Al-Tabbakh. "Synthesis and characterization of high silica HY zeolite by basicity reduction." In 2ND INTERNATIONAL CONFERENCE ON MATERIALS ENGINEERING & SCIENCE (IConMEAS 2019). AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0000278.

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Kung, Steven C. "Comparison of Coal-Ash Corrosion Resistance of Alloys Exposed to Advanced Air-Coal and Oxy-Coal Combustion Environments." In AM-EPRI 2013, edited by D. Gandy and J. Shingledecker. ASM International, 2013. http://dx.doi.org/10.31399/asm.cp.am-epri-2013p0863.

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Abstract A combined pilot-scale combustion test and long-term laboratory study investigated the impact of oxy-firing on corrosion in coal-fired boilers. Four coals were burned under both air and oxy-firing conditions with identical heat input, with oxy-firing using flue gas recirculation unlike air-firing. Despite higher SO2 and HCl concentrations in oxy-firing, laboratory tests showed no increase in corrosion rates compared to air-firing. This is attributed to several factors: (1) Reduced diffusion: High CO2 in oxy-firing densified the gas phase, leading to slower diffusion of corrosive speci
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Reports on the topic "Basicité"

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Rodriguez, Carmen P., John S. McCloy, M. J. Schweiger, Jarrod V. Crum, and Abigail E. Winschell. Optical Basicity and Nepheline Crystallization in High Alumina Glasses. Office of Scientific and Technical Information (OSTI), 2011. http://dx.doi.org/10.2172/1019213.

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Miamee, A. G., and M. Pourahmadi. Degenerate Multivariate Stationary Processes: Basicity, Past and Future, and Autoregressive Representation. Defense Technical Information Center, 1985. http://dx.doi.org/10.21236/ada158879.

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McQuaid, Michael J. Computationally Based Measures of Amine Azide Basicity and Their Correlation With Hypergolic Ignition Delays. Defense Technical Information Center, 2003. http://dx.doi.org/10.21236/ada420016.

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