Relevant bibliographies by topics / Phosphates de vanadium

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Academic literature on the topic 'Phosphates de vanadium'

Author: Grafiati
Published: 25 August 2021
Last updated: 3 February 2022

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Journal articles on the topic "Phosphates de vanadium"

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Anillo, A., M. L. Rodrı́guez, R. Llavona, et al. "Vanadium oxide loaded tin–titanium phosphates." International Journal of Inorganic Materials 2, no. 2-3 (2000): 177–85. http://dx.doi.org/10.1016/s1466-6049(00)00021-0.

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Janusz, Władysław, Svetlana Khalameida, Volodymyr Sydorchuk, et al. "Some properties of milled vanadium phosphates." Adsorption 16, no. 4-5 (2010): 333–41. http://dx.doi.org/10.1007/s10450-010-9238-x.

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PIETRZAK, TOMASZ K., IRENA GORZKOWSKA, JAN L. NOWIŃSKI, JERZY E. GARBARCZYK, and MAREK WASIUCIONEK. "PREPARATION OF TRIPHYLITE-LIKE GLASSES AND NANOMATERIALS IN THE LiFePO4-V2O5 SYSTEM AND STUDY ON THEIR ELECTRICAL CONDUCTIVITY." Functional Materials Letters 04, no. 02 (2011): 143–45. http://dx.doi.org/10.1142/s1793604711001750.

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Research on lithium iron phosphates is stimulated by their application as cathodes in Li -ion rechargeable batteries. The aim of this study was to enhance its initially poor electronic conductivity. A thermal nanocrystallization is applied to lithium-iron-phosphate and lithium-vanadium-iron-phosphates materials resulting in a significant increase of the electronic conductivity of the latter (almost 10-6 S/cm). The obtained nanomaterial exhibits very good thermal stability (up to 625°C), the activation energy 0.51 eV and moderate electronic conductivity at the room temperature, which is, however, a good starting point for further enhancement.
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Ennaciri, A., and P. Barboux. "Solution Synthesis of Vanadium and Titanium Phosphates." Materials Science Forum 152-153 (March 1994): 331–34. http://dx.doi.org/10.4028/www.scientific.net/msf.152-153.331.

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Živkov Baloš, Milica, Dragana Ljubojević, Sandra Jakšić, et al. "VANADIUM IN POULTRY NUTRITION." Archives of Veterinary Medicine 10, no. 1 (2019): 85–92. http://dx.doi.org/10.46784/e-avm.v10i1.84.

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Vanadium (V) is essential element for poultry nutrition. Relatively low level of V (< 10 μg/kg of feed) is known to reduce both growth in chicks and Haugh unit value of eggs. The National Research Council (NRC) recommends the presence of very low levels of V in poultry diets, with the maximum tolerance level (MTL) being 10 mg/kg. Excessive vanadium in poultry diets has been shown to be detrimental to egg production, interior quality of eggs (albumen height), body weight and feed consumption. There is little information on the content of V in feedstuffs. Phosphates are known to be the cause of excessive V in various types of poultry diets. The objective of this study was to obtain information about the content of vanadium in phosphates and poultry feed. The samples were prepared by microwave wet digestion. Content of V was determined by the method of coupled plasma with mass spectrometry on the Agilent ICP-MS 7700. The concentrations of vanadium determined in the examined samples were above the minimum recommended levels for poultry feed, still not exceeding the maximum tolerable values.
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Kalousová, Jaroslava, Jiří Votinský, Ludvík Beneš, Klára Melánová, and Vítězslav Zima. "Vanadyl Phosphate and Its Intercalation Reactions. A Review." Collection of Czechoslovak Chemical Communications 63, no. 1 (1998): 1–19. http://dx.doi.org/10.1135/cccc19980001.

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The structure of the layered αI-VOPO4, VOPO4·2H2O, and their intercalation reactions are discussed. These reactions are divided into two groups. The first includes intercalation reactions of molecular guests which proceed as acid-base processes between the host layered lattice (Lewis acid) and a donor atom of the guest (base). Interaction of water molecules, alcohols, amines, carboxylic acids and their derivatives, heterocyclic N- and S-donors, and complex compounds with vanadyl phosphates is discussed. Vanadyl phosphate, in particular vanadyl phosphate dihydrate can also undergo the second type of the reactions which involves the reduction of a fraction of vanadium(V) atoms to vanadium(IV) with concomitant intercalation of alkylammonium, hydronium or mono- and divalent metal cations to counterbalance the induced negative layer charge. A review with 76 references.
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Garcia-Ponce, A. L., L. Moreno-Real, and A. Jimenez-Lopez. "Synthesis and characterization of mixed niobium-vanadium phosphates." Inorganic Chemistry 27, no. 19 (1988): 3372–76. http://dx.doi.org/10.1021/ic00292a022.

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Mokry, Ladd M., Jeffrey Thompson, Marcus R. Bond, Tom Otieno, Madan Mohan, and Carl J. Carrano. "Stereochemical Control of Cluster Size in Vanadium Phosphates." Inorganic Chemistry 33, no. 13 (1994): 2705–6. http://dx.doi.org/10.1021/ic00091a003.

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Sidorchuk, V. V., S. V. Khalameida, and V. A. Zazhigalov. "Hydrothermal deposition of vanadium phosphates onto carbon materials." Russian Journal of Applied Chemistry 82, no. 3 (2009): 343–51. http://dx.doi.org/10.1134/s107042720903001x.

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Alhumaimess, Mosaed, Zhongjie Lin, Nicholas F. Dummer, Stuart H. Taylor, Graham J. Hutchings, and Jonathan K. Bartley. "Highly crystalline vanadium phosphate catalysts synthesized using poly(acrylic acid-co-maleic acid) as a structure directing agent." Catalysis Science & Technology 6, no. 9 (2016): 2910–17. http://dx.doi.org/10.1039/c5cy01260k.

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Dissertations / Theses on the topic "Phosphates de vanadium"

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BENHAMADA, LATIFA. "Les phosphates de vanadium : valences inusuelles et mixtes." Caen, 1993. http://www.theses.fr/1993CAEN2035.

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L'investigation systematique des diagrammes a-v-p-o (a=alcalins ou alcalino-terreux) ou le vanadium presente soit une valence inusuelle soit une valence mixte a permis d'isoler dix phases dont sept sont originales. Parmi ces phases, quatre composes contiennent du vanadium(iii): k#6v#2(po#4)#4, kvp#2o#7, bav#2(p#2o#7)#2 et kv#4(po#4)(p#2o#7)(p#4o#1#3). L'analyse structurale de ces derniers (par diffraction x sur monocristal) a montre que le vanadium a ce degre d'oxydation avait un comportement voisin de celui du titane et du molybdene car dans presque toutes leurs structures, nous observons des octaedres isoles. Quatre autres phases renferment du vanadium(iv) navopo#4, kvopo#4, na#2vop#2o#7 et na#5(vo)#2(po#4)#3h#2o. Les deux premieres presentent chacune une charpente tridimensionnelle constituee de chaines infinies vo#3# et de monophosphates po#4 alors que les deux autres sont caracterises par des charpentes bidimensionnelles; la charpente vop#2o#7# est formee d'octaedres vo#6 isoles et de groupements diphosphates tandis que la charpente (vo)#2(po#4)#3# est constituee de pyramides et de monophosphates po#4. L'analyse structurale des deux dernieres phases: k(vo)#3(p#2o#7)#2 et rb#6(vo#2)#2(vo)#4(po#4)#4(p#2o#7), a montre que le vanadium contenu dans ces deux structures presente la valence mixte (iv-v). La charpente (vo)#3(p#2o#7)#2# est comparee aux bronzes phosphates de tungstene htb, itb et dptb#h. Par ailleurs, la charpente (vo#2)#2(vo)#4(po#4)#4(p#2o#7)# est tres originale et illustre la coexistence des deux types de coordinence du vanadium: octaedrique et pyramidale. La comparaison de tous ces phosphates de vanadium etudies au laboratoire avec ceux repertories dans la litterature a permis d'etablir une filiation structurale ainsi que la specificite du vanadium aux differents degres d'oxydation
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Nxumalo, Fikile. "Influence of vanadium(V) complexes on the catalytic activity of protein tyrosine phosphates." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq24218.pdf.

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Le, Fur Éric. "Caracterisations physicochimiques de phosphates de vanadium de porosite variee obtenus par synthese hydrothermale." Rennes 1, 2000. http://www.theses.fr/2000REN10094.

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Ce memoire porte sur la caracterisation physicochimique de phosphates de vanadium obtenus par voie hydrothermale. Ceux-ci sont remarquables par la diversite des porosites rencontrees. Porosite 2d quatre nouvelles phases m(vopo 4) 2 4h 2o (m = (mg, zn) 2 +, pb 2 +, ba 2 +, cd 2 +) ont ete isolees. Leurs structures derivent de la structure lamellaire vopo 4 2h 2o basee sur l'heterocondensation d'octaedres vo 5(oh 2) et de tetraedres po 4. Les cations et les molecules d'eau sont situes dans l'espace intercouche. Les correlations cristallochimiques entre les diverses structures m(vopo 4) 2 4h 2o recensees ont ete effectuees en considerant la disposition particuliere des especes intercouches. L'ajustement des donnees magnetiques par un modele 2d montre la presence d'interactions entre les ions vanadium dans les couches. Les etudes thermiques indiquent que l'elimination des molecules d'eau pour les differents composes s'effectue selon des processus complexes. Porosite 1d. Les structures des composes de porosite 1d isoles pendant ce travail sont basees sur l'heterocondensation d'octaedres de vanadium et de tetraedres de phosphore pour les solides renfermant des ions v 3 + tandis que l'autocondensation des polyedres du vanadium (sommets ou aretes) est observee pour les composes a valence mixte v 4 + /v 5 +. Les charpentes vpo sont tridimensionnelles avec des tunnels (3 a 9 a) dans lesquels sont loges les cations. Les etudes magnetiques montrent que les differentes phases etudiees suivent des lois de type curie-weiss. Composes non-poreux. Les solides non-poreux m xv ypo 4 oh z (m = co, ni ; (x + y) < 2) presentent des structures voisines de celle de vpo 4 h 2o (quadratique) constituee de chaines d'octaedres a face communes partiellement remplies par les elements de transition. Les mesures de susceptibilite magnetique montrent de forts couplages antiferromagnetiques a mettre en relation avec le desordre existant dans les chaines d'octaedres et la presence de distances courtes metal - metal (d 2,61 a).
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Gribot, Perrin Nathalie. "Oxydation du propane en acide acrylique sur catalyseurs à base de phosphate de vanadium." Lyon 1, 1995. http://www.theses.fr/1995LYO10195.

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Industriellement, l'obtention d'acide acrylique a partir du propane est realisee en 3 etapes, propanepropeneacroleineacide acrylique, avec des systemes catalytiques et des conditions reactionnelles specifiques pour chacune de ces etapes. Le but de cette these a ete de realiser directement la reaction d'oxydation du propane en acide acrylique sur des catalyseurs a base de phosphate de vanadium et de correler les caracteristiques physico-chimiques du catalyseur avec la selectivite en acide acrylique. Differentes conditions reactionnelles ont ete employees: melange faiblement puis fortement oxydant en presence ou non d'eau. A 400c, un melange fortement oxydant (c#3h#8/o#2/h#2o/n#2=1,6/17,8/20/60,6) a permis d'obtenir une selectivite de 30% en acide acrylique pour 10% de conversion du propane apres activation du precurseurs vohpo#4-0,5h#2o. Il a ete montre que la phase (vo)#2p#2o#7 etait la phase active et que la presence en faible quantite de phases vopo#4 permettait d'ameliorer la selectivite en acide acrylique. La presence de l'eau dans le melange reactionnel s'est averee indispensable pour obtenir de l'acide acrylique. Le role de l'eau, l'influence de la morphologie du precurseur, ainsi que l'influence de l'ajout de dopants ont ete etudies. Ceci a permis de montrer les liens etroits existant entre l'etat d'oxydation, l'etat de cristallisation et l'acidite gouvernee par le degre d'hydratation des catalyseurs v-p-o. Ces trois parametres interdependants semblent conditionner la reaction d'oxydation du propane en acide acrylique sur catalyseurs v-p-o
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Petit, Sébastien. "Interaction d'échanges et résonance magnétique nucléaire du phosphore 31 dans les phosphates de vanadium." Lyon, École normale supérieure (sciences), 2003. http://www.theses.fr/2003ENSL0256.

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El, Badraoui Amina. "Synthèse en présence d'ions ammonium quaternaires de phosphates de vanadium (iii) : caractérisations et études structurales." Université de Rennes 1, 1997. http://www.theses.fr/1997REN10112.

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Le present memoire traite de la synthese de vanadophosphates dans des conditions hydrothermales en presence de cations ammonium quaternaires. Dans le premier chapitre on rappelle les resultats d'une etude bibliographique ou sont consignees les caracteristiques structurales de nombreux composes contenant les elements v, p et o : spheres de coordination et arrangement des polyedres en relation avec le degre d'oxydation des ions vanadium. Les chapitres suivants traitent successivement des systemes explores puis des carateristiques physicochimiques de nouveaux phosphates dans lesquels l'ion vanadium est dans un bas degre d'oxydation. S'agissant des systemes explores, un bilan des resultats est dresse concernant notamment les facteurs influencant la synthese (teneur en eau, temps de chauffage, temperature, nature du structurant organique. . . ). Les caraterisations structurales par la methode de rietveld et les proprietes physiques des deux varietes de vpo#4(h#2o) et du diphosphate acide h#3ovp#2o#7 font l'objet des deux derniers chapitres. Les structures de ces nouveaux composes sont construites a partir d'enchainements d'octaedres vo#6 et de tetraedres isoles dans les orthophosphates et condenses dans le diphosphate. Les proprietes magnetiques sont discutees en relation avec les carateristiques structurales (magnetisme de basse dimensionnalite et eclatement des termes a champ nul). L'orthophosphate vpo#4(h#2o) quadratique presente un magnetisme cooperatif de basse dimensionnalite lie a la presence de dimeres v-v. En regle generale, les octaedres vo#6 sont deformes et on observe un paramagnetisme de type curie-weiss avec des moments en accord avec ceux attendus pour des ions v#3#+.
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Kouvatas, Cassandre. "Caractérisation structurale multiéchelle operando de catalyseurs industriels de type phosphate de vanadium." Thesis, Rennes, Ecole nationale supérieure de chimie, 2017. http://www.theses.fr/2017ENCR0042.

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Les phosphates de vanadium sont utilisés en industrie comme catalyseurs pour l’oxydation du butane en anhydride maléique. Ces composés sont étudiés depuis les années 1980 dans le but d’améliorer leurs performances catalytiques. Cependant la plupart des travaux se sont focalisés sur la surface supposée active du catalyseur, alors que de récentes analyses ont démontré l’importance du corps du matériau dans l’activité catalytique. De plus, la description structurale de certains polymorphes VOPO4 reste imprécise, et si différentes phases VOPO4 ont été mises en évidence dans le catalyseur post mortem, leur présence et leur rôle sont sujets à débats contradictoires. Cette thèse se propose donc de traiter la caractérisation structurale de cette classe de matériaux, par une approche multiéchelle combinant des études ex situ, in situ et operando en RMN du solide (31P et 51V), en diffraction des rayons X et par des calculs théoriques. Afin de mener à bien ce travail, différents points ont été abordés : - une étude a été consacrée à la synthèse des phases VOPO4 puisqu’elles sont à la fois difficiles à obtenir séparément et sensibles au mode de préparation ; - Afin d’extraire un maximum d’informations des expériences RMN, un travail méthodologique lié à l’amélioration de la résolution des spectres 31P des polymorphes VOPO4 a été mené. Des éléments essentiels à la description structurale des VOPO4 ont été apportés par la combinaison de calculs GIPAW de paramètres RMN et l’utilisation de séquences, d’une part basées sur des corrélations dipolaires homonucléaires, d’autre part permettant d’extraire des paramètres RMN d’intérêt autres que le déplacement chimique isotrope. De cette manière, une étude plus approfondie des structures des phases à température ambiante a pu être réalisée, incluant une étude de l’ordre local ; - Les structures ont été étudiées in situ et sous atmosphère non réactive, en combinant RMN du solide et diffraction des rayons X, afin d’évaluer les changements induits par la température (mise en ordre, influence sur la dynamique, sur les transitions de phases). Des expériences RMN et DRX operando ont été mises en place dans le but d’étudier les polymorphes VOPO4 et le pyrophosphate de vanadium (VO)2P2O7 dans les conditions catalytiques, pour aboutir à une meilleure description de leur comportement thermique lors du processus industriel. L’intérêt est ici d’améliorer la compréhension des structures de ces composés et les transitions existant entre eux, en particulier dans des conditions proches du procédé catalytique<br>Vanadium phosphates are used in industry as catalysts for the oxidation of butane into maleic anhydride. This class of material has been studied since the 1980s in order to improve the catalytic performances. However, most studies focus on the supposed active surface, whereas recent work revealed the importance of the bulk material for the catalytic activity. Moreover, the structural descriptions of the VOPO4 polymorphs still show some inaccuracies. The existence and the role of the VOPO4 which are evidenced in the post mortem catalyst are still debated. Thus, this manuscript offers a structural characterization of these materials using a multiscale approach, combining theoretical calculations, ex situ, in situ and operando solid state NMR (31P and 51V) and X-ray diffraction studies. Different features have been developed : - The synthesis of the polymorphs VOPO4 has been study, because these compounds are difficult to obtain with a good purity and are sensitive to the preparation route; - Besides, a methodological investigation has been developed, linked with the improvement of the resolution of the 31P spectra. Furthermore, essential elements have been provided thanks to the combination of GIPAW NMR parameters calculations, homonuclear dipolar correlation experiments and extraction of NMR parameters (other than isotropic chemical shift). Room temperature studies have been made on VOPO4 including the local ordering aspects ; - Structural studies have also been realized in situ and under non-reactive atmosphere, combining solid state NMR and X-ray diffraction techniques in order to evaluate the changes induced by temperature (ordering, influence on phase transitions). In the same way, solid state NMR and X-ray diffraction operando experiments have been performed to study the VOPO4 polymorphs and the (VO)2P2O7 under catalytic conditions, in order to have a better description of the behavior of these phases during the industrial process. This fundamental approach will provide a better understanding of the structure of these compounds and more precisely in catalytic conditions
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Canesson, Laurence. "Synthèse et caractérisation d'aluminophosphates substitués par des métaux de transition et leur application en catalyse d'oxydation du diphénylméthane en phase liquide." Lyon 1, 1999. http://www.theses.fr/1999LYO10054.

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Nous avons synthetise des vapo 4-n, crapo 4-n et coapo 4-n de structures afy ael et afs dont les preparations etaient deja decrites dans la litterature. Nous avons egalement mis au point les syntheses des coapo 4-n de structures atn, apd, afo, afs et afy avec differentes teneurs en cobalt. Chaque solide a ete caracterise par diffraction des rayons x et par spectroscopie infra-rouge. L'incorporation du metal de transition dans le reseau de l'aluminophosphate a ete mise en evidence par des mesures d'acidite, par spectroscopie uv-visible et accessoirement par spectroscopie exafs. Nous avons developpe une nouvelle technique d'analyse par rmn du phosphore-31 par cartographie d'echo de spin permettant de caracteriser les differents environnements des atomes de phosphore dans les coapo 4-n. Cette methode a permis de montrer que le cobalt n'est pas reparti de maniere aleatoire dans certaines structures et que les reseaux sont organises. Les coapo 4-n et crapo 4-n catalysent l'oxydation selective du diphenylmethane et du 4,4-difluorodiphenylmethane en cetone correspondante par l'hydroperoxyde de tertiobutyle. Ces catalyseurs sont purement heterogenes ce qui n'est pas le cas des vapo 4-n, pour lesquelles environ 20% du vanadium contenu dans la structure est lessive lors de la reaction. Une etude de la reaction sous differentes atmospheres a permis de mettre en evidence la participation de l'oxygene de l'air dans le processus d'oxydation. Un mecanisme radicalaire faisant intervenir un recyclage du peroxyde a ete propose, mais doit etre en competition avec d'autres chemins reactionnels.
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Ait, Lachgar Khadija. "Oxydation ménagée du n-butane : modification des performances catalytiques du pyrophosphate de vanadyle par ajout de α-Sb2O4 ou par traitement oxydant". Lyon 1, 1997. http://www.theses.fr/1997LYO10364.

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Ce travail se situe dans le cadre general de l'activation et de la fonctionnalisation des alcanes legers. Les effets de cooperation de phases entre (vo)#2p#2o#7 et a-sb#2o#4 ont ete etudies dans la reaction d'oxydation du n-butane. L'anhydride maleique (am) est majoritaire sur le catalyseur pyrophosphate de vanadyle. Lorsque (vo)#2p#2o#7 est melange mecaniquement avec a-sb#2o#4, la reaction est alors orientee soit vers l'oxydeshydrogenation (en butenes) soit vers l'oxydation menagee (en am), selon la nature (preparation) de a-sb#2o#4. La formation de butenes a ete reliee a une contamination chimique de (vo)#2p#2o#7 par des especes sb (mesures xps, leis, edx - tem). Cette contamination induit une reduction de surface du vanadium (xps) et une baisse de l'acidite (adsorption de pyridine par ftir). Par contre la formation de am a ete correlee a une oxydation du vanadium (xps) sans formation de nouvelle phase (drx, conductivite electrique). La selectivite en am peut etre aussi fortement amelioree par pretraitement d'oxydation a 500c de (vo)#2p#2o#7. Cette exaltation s'explique par un developpement en surface du solide de defauts structuraux (drx) lies a des especes v#5#+ isolees ou en microdomaines (xps, raman, rmn du solide, conductivite electrique).
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David, Michèle. "Préparation et caractérisation de catalyseurs V-P-O pour l'oxydation du n-butane en anhydride maléique." Lyon 1, 1988. http://www.theses.fr/1988LYO19004.

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Books on the topic "Phosphates de vanadium"

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Judd, J. C. Recovery of vanadium, uranium, and phosphate from Idaho phosphorite ores. United States Dept. of the Interior, Bureau of Mines, 1986.

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Collins, D. G. Hot acid leaching of vanadium from western phosphate beneficiation tailings. U.S. Dept. of the Interior, Bureau of Mines, 1985.

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United States. Bureau of Mines. Recovery of Vanadium, Uranium, and Phosphate From Idaho Phosphorite Ores. s.n, 1986.

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Nguyen, Phong T. Chemistry and characterization of vanadyl phosphate catalysts. 1995.

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H.A.O. Hill (Editor), P. J. Sadler (Editor), and A. J. Thomson (Editor), eds. Metal Sites in Proteins and Models: Phosphatases, Lewis Acids and Vanadium (Springer Desktop Editions in Chemistry). Springer, 1999.

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Metal Sites in Proteins and Models: Phosphatases, Lewis Acids and Vanadium (Structure and Bonding). Springer-Verlag Telos, 1997.

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O, Hill H. A., Sadler P. J, Thomson A. J, and Auld D. S, eds. Metal sites in proteins and models. Springer, 1997.

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Book chapters on the topic "Phosphates de vanadium"

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Gresser, Michael J., and Alan S. Tracey. "Vanadates as Phosphate Analogs in Biochemistry." In Vanadium in Biological Systems. Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-2023-1_4.

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Makinen, Marvin W., Stephanie E. Rivera, Katherine I. Zhou, and Matthew J. Brady. "Enhancement of Insulin Action by bis(Acetylacetonato)oxovanadium(IV) Occurs through Uncompetitive Inhibition of Protein Tyrosine Phosphatase-1B." In Vanadium: The Versatile Metal. American Chemical Society, 2007. http://dx.doi.org/10.1021/bk-2007-0974.ch007.

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Pugazhenthi, Subbiah, Feridoon Tanha, Bruce Dahl, and Ramji L. Khandelwal. "Decrease in protein tyrosine phosphatase activities in vanadate-treated obese Zucker (fa/fa) rat liver." In Vanadium Compounds: Biochemical and Therapeutic Applications. Springer US, 1995. http://dx.doi.org/10.1007/978-1-4613-1251-2_15.

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Fantus, I. G., G. Deragon, R. Lai, and S. Tang. "Modulation of insulin action by vanadate: evidence of a role for phosphotyrosine phosphatase activity to alter cellular signaling." In Vanadium Compounds: Biochemical and Therapeutic Applications. Springer US, 1995. http://dx.doi.org/10.1007/978-1-4613-1251-2_12.

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Boissonneault, Martin, Alcide Chapdelaine, and Simone Chevalier. "The enhancement by pervanadate of tyrosine phosphorylation on prostatic proteins occurs through the inhibition of membrane-associated tyrosine phosphatases." In Vanadium Compounds: Biochemical and Therapeutic Applications. Springer US, 1995. http://dx.doi.org/10.1007/978-1-4613-1251-2_17.

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Shechter, Yoram, Jingping Li, Joseph Meyerovitch, et al. "Insulin-like actions of vanadate are mediated in an insulin-receptor-independent manner via non-receptor protein tyrosine kinases and protein phosphotyrosine phosphatases." In Vanadium Compounds: Biochemical and Therapeutic Applications. Springer US, 1995. http://dx.doi.org/10.1007/978-1-4613-1251-2_5.

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Nguyen, P. T., and A. W. Sleight. "Vanadium Phosphate Catalyst: Ideal Structure, Real Structure, and Stability Region." In ACS Symposium Series. American Chemical Society, 1996. http://dx.doi.org/10.1021/bk-1996-0638.ch017.

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Hassaan, M. Y., M. M. El-Desoky, H. Masuda, S. Kubuki, and T. Nishida. "Effect of nanocrystallization on the electrical conduction of silver lithium phosphate glasses containing iron and vanadium." In ICAME 2011. Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-4762-3_38.

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"Influence of Phosphates on Retention and Mobility of Zinc, Cadmium, and Vanadium in Soils." In Phosphate in Soils. CRC Press, 2018. http://dx.doi.org/10.1201/9781351228909-8.

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Massucci, M. A., P. Patrono, G. Russo, M. Turco, S. Vecchio, and P. Ciambelli. "Vanadium exchanged titanium phosphates as catalysts for the selective reduction of nitrogen oxide with ammonia." In Studies in Surface Science and Catalysis. Elsevier, 1995. http://dx.doi.org/10.1016/s0167-2991(06)81812-4.

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Conference papers on the topic "Phosphates de vanadium"

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Savenko, Alla, Alla Savenko, Oleg Pokrovsky, Oleg Pokrovsky, Irina Streletskaya, and Irina Streletskaya. "DISTRIBUTION OF DISSOLVED CHEMICAL ELEMENTS IN THE YENISEI RIVER ESTUARY AND ADJACENT WATER AREA OF THE KARA SEA." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.21610/conferencearticle_58b43172445b0.

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The distribution of dissolved chemical elements (major ions, nutrients, and trace elements) in the Yenisei River estuary and adjacent water area in 2009 and 2010 are presented. These results were compared to the data obtained during previous hydrochemical studies of this region. The transport of major cations (Na, K, Mg, Ca) and some trace elements (Rb, Cs, Sr, B, F, As, Mo, U) in the estuary follows conservative mixing. Alkalinity also belongs to conservative components, however this parameter exhibits substantial spatial heterogeneity caused by complex hydrological structure of the Yenisei Bay and adjoining part of the Kara Sea formed under the influence of several sources of desalination and salty waters inflow. Concentrations of Pmin, Si, and V in the desalinized waters of photic layer decrease seaward owing to uptake by phytoplankton. The losses of these elements reach 30–57, 30, and 9% of their supply by river runoff, respectively. The content of dissolved phosphates and vanadium in the intermediate and near-bottom layers of the Yenisei River estuary strongly increases with salinity due to regeneration of precipitated organic matter, whereas silica remineralization is much less pronounced. Barium is characterized by additional input of dissolved forms in the mixing zone in the quantity comparable to that carried out by river runoff. This may be caused by its desorption from river suspended matter due to ion exchange. The transport of dissolved Al and Mn in the estuarine zone is probably controlled by the coagulation and flocculation of organic and organomineral colloids, which is indicated by a decrease in the concentration of these elements at the beginning of the estuary (31 and 56%, respectively) followed by a stable concentration further seaward.
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Savenko, Alla, Alla Savenko, Oleg Pokrovsky, Oleg Pokrovsky, Irina Streletskaya, and Irina Streletskaya. "DISTRIBUTION OF DISSOLVED CHEMICAL ELEMENTS IN THE YENISEI RIVER ESTUARY AND ADJACENT WATER AREA OF THE KARA SEA." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.31519/conferencearticle_5b1b947e8aa678.89317861.

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The distribution of dissolved chemical elements (major ions, nutrients, and trace elements) in the Yenisei River estuary and adjacent water area in 2009 and 2010 are presented. These results were compared to the data obtained during previous hydrochemical studies of this region. The transport of major cations (Na, K, Mg, Ca) and some trace elements (Rb, Cs, Sr, B, F, As, Mo, U) in the estuary follows conservative mixing. Alkalinity also belongs to conservative components, however this parameter exhibits substantial spatial heterogeneity caused by complex hydrological structure of the Yenisei Bay and adjoining part of the Kara Sea formed under the influence of several sources of desalination and salty waters inflow. Concentrations of Pmin, Si, and V in the desalinized waters of photic layer decrease seaward owing to uptake by phytoplankton. The losses of these elements reach 30–57, 30, and 9% of their supply by river runoff, respectively. The content of dissolved phosphates and vanadium in the intermediate and near-bottom layers of the Yenisei River estuary strongly increases with salinity due to regeneration of precipitated organic matter, whereas silica remineralization is much less pronounced. Barium is characterized by additional input of dissolved forms in the mixing zone in the quantity comparable to that carried out by river runoff. This may be caused by its desorption from river suspended matter due to ion exchange. The transport of dissolved Al and Mn in the estuarine zone is probably controlled by the coagulation and flocculation of organic and organomineral colloids, which is indicated by a decrease in the concentration of these elements at the beginning of the estuary (31 and 56%, respectively) followed by a stable concentration further seaward.
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Stănescu, R., N. Vedeanu, I. B. Cozar, and A. Măgdaş. "Structural investigation of phosphate - bismuth glasses with vanadium." In PROCESSES IN ISOTOPES AND MOLECULES (PIM 2013). AIP, 2013. http://dx.doi.org/10.1063/1.4833710.

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Acosta, D. R., P. Ruiz, B. Delmon, et al. "Are there structural factors present in the synergetic effect observed in mechanical mixtures of vanadium phosphate catalysts?" In The 8th Latin American congress on surface science: Surfaces , vacuum, and their applications. AIP, 1996. http://dx.doi.org/10.1063/1.51153.

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Nebesnyi, Roman, Volodymyr Ivasiv, Iryna Shpyrka, Yuliia Nebesna, Volodymyr Sydorchuk, and Svitlana Khalameida. "Synthesis of acrylic acid via aldol condensation reaction on titanium and mixed vanadium-titanium phosphate catalysts with different porous structure." In 2017 IEEE 7th International Conference "Nanomaterials: Application & Properties" (NAP). IEEE, 2017. http://dx.doi.org/10.1109/nap.2017.8190167.

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Reports on the topic "Phosphates de vanadium"

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McCormick, R. L., and G. O. Alptekin. Development of Vanadium-Phosphate Catalysts for Methanol Production by Selective Oxidation of Methane. Office of Scientific and Technical Information (OSTI), 1997. http://dx.doi.org/10.2172/643297.

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McCormick, R. L., and M. C. Jha. Development of vanadium-phosphate catalysts for methanol production by selective oxidation of methane. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/6649355.

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McCormick, R. L. Development of Vanadium Phosphaate Catalysts for Methanol Production by Selective Oxidation of Methane. Office of Scientific and Technical Information (OSTI), 1997. http://dx.doi.org/10.2172/641274.

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McCormick, R. L., and G. O. Alptekin. Development of vanadium-phosphate catalysts for methanol production by selective oxidation of methane. Quarterly report, July - September 1996. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/469094.

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McCormick, R. L., M. C. Jha, and R. D. Streuber. Development of vanadium-phosphate catalysts for methanol production by selective oxidation of methane. Quarterly technical progress report 3, April--June 1993. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/10103510.

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McCormick, R. L. Development of vanadium-phosphate catalysts for methanol production by selective oxidation of methane. Quarterly technical progress report 8, January--March, 1995. Office of Scientific and Technical Information (OSTI), 1995. http://dx.doi.org/10.2172/113903.

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McCormick, R. L., and G. O. Alptekin. Development of vanadium-phosphate catalysts for methanol production by selective oxidation of methane. Quarterly technical progress report 13, April--June, 1996. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/418425.

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McCormick, R. L., M. C. Jha, and R. D. Streuber. Development of vanadium-phosphate catalysts for methanol production by selective oxidation of methane. Quarterly technical progress report 5, October--December, 1993. Office of Scientific and Technical Information (OSTI), 1994. http://dx.doi.org/10.2172/10150842.

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McCormick, R. L. Development of vanadium-phosphate catalysts for methanol production by selective oxidation of methane. Quarterly technical progress report 11, October--December 1995. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/257345.

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McCormick, R. L., M. C. Jha, and R. D. Streuber. Development of vanadium-phosphate catalysts for methanol production by selective oxidation of methane. Quarterly technical progress report 4, July--September 1993. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/10124288.

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