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Oxydation Catalytique Dun Melange Butane Propane En Anhydride Maleique
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Book Synopsis OXYDATION PARTIELLE DU N-BUTANE EN ANHYDRIDE MALEIQUE. ETUDE DU CATALYSEUR DANS LES CONDITIONS D'UN REACTEUR MEMBRANAIRE by : SANDRINE.. MOTA
Download or read book OXYDATION PARTIELLE DU N-BUTANE EN ANHYDRIDE MALEIQUE. ETUDE DU CATALYSEUR DANS LES CONDITIONS D'UN REACTEUR MEMBRANAIRE written by SANDRINE.. MOTA and published by . This book was released on 1999 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'ANHYDRIDE MALEIQUE EST UN IMPORTANT INTERMEDIAIRE INDUSTRIEL. L'AMELIORATION DU RENDEMENT POUR L'OXYDATION PARTIELLE DU BUTANE EN AM PRESENTE DONC UN GRAND INTERET. L'OBJECTIF DE CE TRAVAIL EST D'ETUDIER LA REACTION DANS UN NOUVEAU TYPE DE REACTEUR : LE REACTEUR MEMBRANAIRE. LA MEMBRANE CONTROLE L'APPORT D'OXYGENE VERS LE LIT CATALYTIQUE, CE QUI PERMET DE TRAVAILLER AVEC DES CONCENTRATIONS ELEVEES EN BUTANE, LIMITANT AINSI L'OXYDATION TOTALE. DES CATALYSEURS V-P-O TESTES DANS UN REACTEUR CONVENTIONNEL SOUS CONDITIONS REDUCTRICES (O 2/C 4 = 0.6) METTENT EN EVIDENCE UNE RAPIDE CHUTE DE LA PRODUCTION EN AM PROVOQUEE PAR UNE REDUCTION DU CATALYSEUR. L'ACTIVATION DU BUTANE A LIEU SUR DES SITES V 4 + TANDIS QUE LES SITES V 5 + SONT RESPONSABLES DE LA FORMATION D'AM. LA DESACTIVATION DU BUTANE EST LIMITEE LORSQUE LE CATALYSEUR EST PREALABLEMENT OXYDE A 500\C. DES CATALYSEURS V-P-O DOPES PAR DU MOLYBDENE OU PAR DU COBALT DEVIENNENT SELECTIFS EN ANHYDRIDE MALEIQUE SOUS CONDITIONS REDUCTRICES. LES DEUX ELEMENTS AGISSENT SUR L'EQUILIBRE REDOX DES ESPECES VANADIUM ET PERMETTENT DE CONSERVER UNE MEILLEURE CAPACITE OXYDANTE. L'ETUDE DE LA REACTION EN REACTEUR MEMBRANAIRE A MIS EN EVIDENCE L'HETEROGENEITE DU LIT CATALYTIQUE. L'APPORT D'OXYGENE DANS LE COMPARTIMENT INTERNE AVEC LE BUTANE REND LE CATALYSEUR PLUS SELECTIF. L'INVERSION DU FLUX INTERNE PERMET D'HOMOGENEISER L'ETAT DU CATALYSEUR ET D'OBTENIR TEMPORAIREMENT DES PERFORMANCES CATALYTIQUES SUPERIEURES AU REACTEUR CONVENTIONNEL.
Book Synopsis Contribution à la préparation d'anhydride maléique en réacteur fluidisé par oxydation catalytique d'hydrocarbures by : Oscar Kizer Yornistke
Download or read book Contribution à la préparation d'anhydride maléique en réacteur fluidisé par oxydation catalytique d'hydrocarbures written by Oscar Kizer Yornistke and published by . This book was released on 1977 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: ETUDE D'UN CATALYSEUR D'OXYDATION DU BUTANE; INFLUENCE DE LA TEMPERATURE, DU DEBIT DE REACTIF, DE LA HAUTEUR DU LIT FLUIDISE, ETC. SUR LE RENDEMENT EN ANHYDRIDE MALEIQUE; LE CATALYSEUR UTILISE EST TOTALEMENT INEFFICACE ET L'ETUDE DE PLANIFICATION EST EFFECTUEE POUR LA REACTION D'OXYDATION DU BENZENE.
Book Synopsis Propriétés physico-chimiques des phases solides du système V.P.Mo. 0 by : Alain Raminosona
Download or read book Propriétés physico-chimiques des phases solides du système V.P.Mo. 0 written by Alain Raminosona and published by . This book was released on 1985 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dans le but de trouver de nouveaux catalyseurs d'oxydation du butane en anhydride maléique, de nouvelles phases appartenant au système V.P.Mo.0 ont été synthétisées et caractérisées par différentes méthodes d''analyse physico-chimiques (diffraction X ; spectroscopies IR, UV, RPE ; microscopie électronique ; analyses thermiques différentielles et gravimétriques). Le montage d'un test catalytique (réacteur intégra à lit fixe, analyse chromatographique en ligne des effluents) a permis de déterminer l'activité et la sélectivité de ces phases. Pour corréler les propriétés catalytiques et physico-chimiques, il a été nécessaire également d'examiner à la fois les propriétés électroniques (conductivité électrique, résonance paramagnétique électronique) et la mobilité de l'oxygène à l'intérieur du réseau cristallin de ces phases (analyses thermiques). Les différences et les analogies existant entre les propriétés structurales, thermodynamiques, cinétiques et catalytiques des systèmes V.P.O et V.P. Mo.0 ont permis ainsi de mieux comprendre les mécanismes réactionnels et les réactions solide-solide et solide-gaz intervenant avec ces systèmes. L'ensemble de ces résultats contribue à l'amélioration des procédés de fabrication de l'anhydride maléique partir du butane.
Book Synopsis PREPARATION ET CARACTERISATION DE CATALYSEURS V-P-O POUR L'OXYDATION DE BUTANE EN ANHYDRIDE MALEIQUE by : Michèle David
Download or read book PREPARATION ET CARACTERISATION DE CATALYSEURS V-P-O POUR L'OXYDATION DE BUTANE EN ANHYDRIDE MALEIQUE written by Michèle David and published by . This book was released on 1988 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Influence de la morphologie cristalline de catalyseurs V-P-O sur l'oxydation ménagée du n-butane en anhydride maléique by : Éric Kesteman
Download or read book Influence de la morphologie cristalline de catalyseurs V-P-O sur l'oxydation ménagée du n-butane en anhydride maléique written by Éric Kesteman and published by . This book was released on 1996 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Préparation et caractérisation de catalyseurs V-P-O pour l'oxydation du n-butane en anhydride maléique by : Michèle David (ingénieur E.S.C.I.L.).)
Download or read book Préparation et caractérisation de catalyseurs V-P-O pour l'oxydation du n-butane en anhydride maléique written by Michèle David (ingénieur E.S.C.I.L.).) and published by . This book was released on 1988 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis CONTRIBUTION A L'ETUDE DU MECANISME REACTIONNEL DE L'OXYDATION DU N-BUTANE EN ANHYDRINE MALEIQUE SUR DES CATALYSEURS PHOSPHATES DE VANADIUM by : YA JUAN.. ZHANG-LIN
Download or read book CONTRIBUTION A L'ETUDE DU MECANISME REACTIONNEL DE L'OXYDATION DU N-BUTANE EN ANHYDRINE MALEIQUE SUR DES CATALYSEURS PHOSPHATES DE VANADIUM written by YA JUAN.. ZHANG-LIN and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: LE BUT ESSENTIEL DE CETTE ETUDE ETAIT D'ESSAYER LE MECANISME REACTIONNEL DE L'OXYDATION DU BUTANE EN ANHYDRIDE MALEIQUE EN FONCTION DE PARAMETRES STRUCTURAUX DEPENDANT DE LA NATURE DES PHASES DU SYSTEME PHOSPHATE DE VANADIUM. NOUS AVONS ETUDIE L'OXYDATION DU BUTANE ET DES MOLECULES PROPOSEES COMME DES INTERMEDIAIRES POTENTIELS (BUTENE-1, BUTADIENE ET FURANNE) INTERVENANT DANS LA CHAINE REACTIONNELLE BUTANE AM. CETTE ETUDE A ETE REALISEE SUR LES PHASES A BASE DE PYROPHOSPHATE DE VANADIUM ET LES PHASES VOPO#4 (#I#I, , ET ) AFIN DE DETERMINER QUELLES STRUCTURES SONT UTILES POUR LES DIFFERENTES ETAPES REACTIONNELLES. NOUS AVONS CARACTERISE L'ETAT PHYSICOCHIMIQUE DES PHASES UTILISEES AVANT ET APRES REACTION CATALYTIQUE A L'AIDE DE DIFFERENTES TECHNIQUES, TELLES QUE LA DIFFRACTION DES RAYONS X, LA SPECTROSCOPIE RMN DU #3#1P, LA SPECTROSCOPIE RAMAN ET LA SPECTROSCOPIE RPE PERMETTANT L'ETUDE A LA FOIS DE LA STRUCTURE VOLUMIQUE ET SUPERFICIELLE DES CATALYSEURS. SELON CETTE ETUDE: 1) L'ACTIVATION DU BUTANE SE FERAIT PREFERENTIELLEMENT SUR LA PHASE (VO)#2P#2O#7, L'INTRODUCTION DES OXYGENES SE FERAIT PLUS RAPIDEMENT SUR LES PHASES VOPO#4, 2) LA FORMATION DE L'ANHYDRIDE MALEIQUE A PARTIR DU BUTANE PASSERAIT PAR UNE VOIE MAJORITAIRE QUI SE FERAIT SANS L'INTERVENTION DES INTERMEDIAIRES MOLECULAIRES (PAR LA VOIE ALKOXYDE DE PREFERENCE A LA VOIE OLEFINIQUE)
Book Synopsis Étude de l'oxydation catalytique du benzene en anhydride maleique by : Boris Kalitventzeff
Download or read book Étude de l'oxydation catalytique du benzene en anhydride maleique written by Boris Kalitventzeff and published by . This book was released on 1969 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Oxydation catalytique du benzène en anhydride maléique en couche fluidisée évaluation de modèles du réacteur by : Oscar Rodriguez Dominguez
Download or read book Oxydation catalytique du benzène en anhydride maléique en couche fluidisée évaluation de modèles du réacteur written by Oscar Rodriguez Dominguez and published by . This book was released on 1980 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Oxydation catalytique du propane en acide acrylique, optimisation des performances en mode pulsé et cinétique de réoxydation by : Johann Tête
Download or read book Oxydation catalytique du propane en acide acrylique, optimisation des performances en mode pulsé et cinétique de réoxydation written by Johann Tête and published by . This book was released on 2003 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Dictionnaire des termes de médecine by : Henry Eugène de Méric
Download or read book Dictionnaire des termes de médecine written by Henry Eugène de Méric and published by . This book was released on 1899 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Farm Prices written by and published by . This book was released on 1979 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 1976 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and dis· seminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) *at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the ac· tivity 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 concerned if the printing and distribution of the volume were handled by an international 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 Corporation 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 20 (thesis year 1975) a total of 10,374 theses titles from 28 Canadian and 239 United States universities. We are sure that this broader base for theses titles reported will greatly enhance the value of this important annual reference work. The organization of Volume 20 is identical to that of past years. It consists of theses titles arranged by discipline and by university within each discipline.
Book Synopsis Hired Farm Workers by : United States. Employment Standards Administration
Download or read book Hired Farm Workers written by United States. Employment Standards Administration and published by . This book was released on 1971 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Essentials in Modern HPLC Separations by : Serban C. Moldoveanu
Download or read book Essentials in Modern HPLC Separations written by Serban C. Moldoveanu and published by Elsevier. This book was released on 2022-06-24 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt: Essentials in Modern HPLC Separations, Second Edition discusses the role of separation in high performance liquid chromatography (HPLC). This new and updated edition systematically presents basic concepts as well as new developments in HPLC. Starting with a description of basic concepts, it provides important guidance for the practical utilization of various HPLC procedures, such as the selection of the HPLC type, proper choice of the chromatographic column, selection of mobile phase and selection of the method of detection, all of which are in correlation with the physico-chemical characteristics of the compounds separated. Every chapter has been carefully reviewed, with several new sections added to bring the book completely up-to-date. Hence, it is a valuable reference for students and professors in chemistry. Provides a thoroughly updated resource, with an entirely new section on Computer-aided Method Development in HPLC and new subsections on miniaturization and automation in HPLC, chemometric aspects of HPLC, green solvent use in HPLC, and more Includes insights into the chromatographic process to find the optimum solution for analyzing complex samples Presents a basis for understanding the utilization of modern HPLC for applications, particularly for the analysis of pharmaceutical, biological, food, beverage and environmental samples
Book Synopsis Waterway User Charges by : American Enterprise Institute for Public Policy Research
Download or read book Waterway User Charges written by American Enterprise Institute for Public Policy Research and published by . This book was released on 1977 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
