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Academic literature on the topic 'Réaction exothermique'
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Journal articles on the topic "Réaction exothermique"
Belaid, Kumar Djamel, and Smaïl Kacha. "Étude cinétique et thermodynamique de l’adsorption d’un colorant basique sur la sciure de bois." Revue des sciences de l’eau 24, no. 2 (October 4, 2011): 131–44. http://dx.doi.org/10.7202/1006107ar.
Full textAgbodan, 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 (August 17, 2020): 1489–98. http://dx.doi.org/10.4314/ijbcs.v14i4.26.
Full textDissertations / Theses on the topic "Réaction exothermique"
Galant, françois Magda. "Étude cinétique de la réaction exothermique d'oxydation du sulfure de zinc." Vandoeuvre-les-Nancy, INPL, 1995. http://www.theses.fr/1995INPL037N.
Full textCharton, Sophie. "Étude et modélisation en régime transitoire d'un écoulement de gaz à haute pression dans un milieu poreux réactif." Vandoeuvre-les-Nancy, INPL, 1997. http://www.theses.fr/1997INPL012N.
Full textFourdan, franck. "Etude de réaction chimiques exothermiques autoalimentées dans l'environnement aérien." Aix-Marseille 3, 1992. http://www.theses.fr/1992AIX30017.
Full textDumazer, Guillaume. "Dynamique microscopique et propriétés macroscopiques de systèmes réactifs structurés : fronts d'onde chimiques exothermiques et prise du plâtre." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2010. http://tel.archives-ouvertes.fr/tel-00628301.
Full textHammioui, Mustapha El. "Lois cinétiques dans les réactions exothermiques de formation des hydrures métalliques : influence des paramètres de surface et des éléments d'addition." Dijon, 1986. http://www.theses.fr/1986DIJOS020.
Full textBen, Amor Hatem. "Développement d'un réacteur-condenseur multifonctionnel pour la mise en oeuvre de réactions exothermiques hétérogènes en phase gazeuse à produits condensables." Doctoral thesis, Universite Libre de Bruxelles, 2001. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/211643.
Full textCavagnol, Sofien. "Approche multi échelle de l'emballement des réactions exothermiques de torréfaction de la biomasse lignocellulosique : de la cinétique chimique au lit de particules." Phd thesis, Ecole Centrale Paris, 2013. http://tel.archives-ouvertes.fr/tel-00978525.
Full textEssakhi, Adil. "Réacteurs structurés pour réactions exothermiques : application à l’oxydation déshydrogénante du propane sur catalyseurs VOx/TiO2 déposés sur plaques et mousses en acier inox." Thesis, Lille 1, 2012. http://www.theses.fr/2012LIL10012/document.
Full textThe heterogeneous catalyst V2O5/TiO2 is used industrially for the oxidation of o-xylene to phtalic anhydride. It has been the object of numerous works since more than thirty years and constitutes an interesting model solid/solid interface. It has also been studied for the exothermic reaction of oxidative dehydrogenation of propane. However, combustion reaction being favored, the selectivity to propylene decreases as conversion increases and is strongly dependent on temperature. Traditional fixed packed bed reactors do not allow a good dissipation of heat thus generating hot spots producing CO2 and rapid catalyst deactivation. We have tried to better control the heat transfer of this reaction by using a coated structured reactor. Stainless steel was chosen as structuring material due to its common use in industrial reactors and for its heat conductivity. The steps leading to mechanically, thermally and chemically stable coatings of V2O5/TiO2 on metallic substrates have been studied. To avoid poisoning of the active VOx phase by elements migrating from the substrate, a protective amorphous silica layer was deposited by Remote Plasma Enhanced Chemical Vapor Deposition. Coating parameters have first been determined for plane plates representative of reactor walls and then adapted to macroporous foam inserts. At all steps of preparation, the coatings have been characterized by several techniques (XRD, Raman Spectroscopy, Electron Probe Micro Analysis …). The catalytic properties have then been compared to V2O5/TiO2 powder catalysts in similar operating conditions. Using the structured reactor, yield in propylene could be increased by 50% at 10% conversion
Vafaei, Alamdari Mahvand. "Étude d’un réacteur chimique structuré de type échangeur à plaques hautes performances à l’aide d’un modèle à compartiments détaillé." Vandoeuvre-les-Nancy, INPL, 2006. http://docnum.univ-lorraine.fr/public/INPL/2006_VAFAEI_ALAMDARI_M.pdf.
Full textThe implementation of exothermic chemical reactions is strongly limited by the dissipation of the heat generated. Because of this, a new concept of structured heat exchanger reactor has been developed by Alfa Laval. This reactor is named OPR (Open Plate Reactor). This reactor is based on high performances heat plate exchanger in which small inserts allow a good mixing of the reactants. Moreover the reactants may be injected in several points whereas numerous configurations allow to alternate co-current and counter-current flows between reactive fluid and cooling fluid depending on the needs. Residence Time Distribution (RTD) experiments have been carried out to characterize the fluid behaviour. The experiments have been conducted in a large range of operating flow-rates and for several viscosities. The flow behaviour has been modelled by the perfect mixing cells in series exchanging with a stagnant zone. The time of exchanging and the volume of the stagnant zone have been precisely estimated as a function of viscosities and flow-rates. The heat and mass balances have been added into this model in order to simulate three chemical reactions in homogeneous liquid medium for which the kinetic’s is well known : Alkaline hydrolysis of ethyl acetate, Alkaline hydrolysis of ethylene glycol diacetate, Oxidation of sodium thiosulphate by hydrogen peroxide. A reasonable agreement has been found between experimental results and simulations both for productivity and selectivity of the reactions. For the exothermic reaction the experimental and simulated temperature profiles have been compared. The model gives a reasonable representation except under certain conditions for which the amplitude of the hot point is over estimated. This difference provides that the axial conduction in the solid is not taken into account in the model. The model has been used to study the behaviour of the reactor for several configurations for which experimental results are not still available. Moreover a new concept of compartmental model has been developed to simulate the results obtained with reaction tests for micro mixing evaluation of the reactant’s inlet