Literatura científica selecionada sobre o tema "Adsorption d'ammoniac"
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Artigos de revistas sobre o assunto "Adsorption d'ammoniac"
Béré, KE, M. Gravelle e M. Abon. "Acidité des catalyseurs VPO : adsorption d'ammoniac étudiée par microcalorimétrie et DTP". Journal de Chimie Physique 92 (1995): 1521–43. http://dx.doi.org/10.1051/jcp/1995921521.
Texto completo da fonteBennis, Khalil, Pierre Martinet, Daniel Schuhmann e Pierre Vanel. "Adsorption de sels d'ammonium quaternaires à courte chaîne aryle à l'interface mercure-solution". Journal de Chimie Physique 86 (1989): 1393–404. http://dx.doi.org/10.1051/jcp/19898601393.
Texto completo da fonteTeses / dissertações sobre o assunto "Adsorption d'ammoniac"
Samanni-Vaute, Loetitia. "Adsorption d'ammoniac sur différents matériaux : application à la désodorisation en réacteur abiotique et biotique". Aix-Marseille 1, 1994. http://www.theses.fr/1994AIX11063.
Texto completo da fonteLOUBET, Benjamin. "Modélisation du dépôt sec d'ammoniac atmosphérique à proximité des sources". Phd thesis, Université Paul Sabatier - Toulouse III, 2000. http://tel.archives-ouvertes.fr/tel-00003250.
Texto completo da fonteGédéon, Antoine. "Contribution à l'étude par RMN (H et Xe) des zéolithes MY (M=NA, NI et CO) adsorption d'eau et d'ammoniac /". Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb376053410.
Texto completo da fonteGédéon, Antoine. "Contribution a l'etude par rmn (**(1)h et **(129)xe) des zeolithes my (m = na**(+), ni**(2+), cu**(2+) et co**(2+)) : adsorption d'eau et d'ammoniac". Paris 6, 1987. http://www.theses.fr/1987PA066390.
Texto completo da fonteZhao, Hongying. "Étude de catalyseurs à base d’oxyde de titane et d’oxyde de vanadium sulfatés pour l’oxydation sélective du méthanol en diméthoxyméthane (DMM)". Thesis, Lyon 1, 2010. http://www.theses.fr/2010LYO10092/document.
Texto completo da fonteThis work is related to the subject “Clean Energy”. Dimethoxymethane (DMM) is asuitable H2 storage material for mobile application because of its high content of hydrogen,extremely low toxicity and environmentally benign. Therefore, sulfated vanadia-titania,sulfated binary vanadia-based and titania-based catalysts were prepared and evaluated inthe reaction of selective oxidation of methanol to DMM and further production ofhydrogen. The surface acidic and redox properties of the studied catalysts were correlatedto their catalytic performance. In addition, the reaction mechanisms and the identificationof factors limiting the activity and selectivity of catalysts were also studied
Cardenas, Cristian. "Analyse et modélisation du comportement des caissons d'épuration de l'air équipant les engins de chantier pour la protection des opérateurs contre les gaz et vapeurs". Electronic Thesis or Diss., Université de Lorraine, 2021. http://www.theses.fr/2021LORR0090.
Texto completo da fonteThis thesis deals with the development of four models to simulate an industrial adsorption process of ammonia on zinc sulphate-doped activated carbon. It is described by mass balance, thermodynamic, hydrodynamics and adsorption kinetics equations. Since the values of parameters are needed to implement the model, the activated carbon is first characterised. Experimental measurements of ammonia adsorption isotherms on doped activated carbon were first carried out. Then a method based on the sensitivity analysis of parameters was used to evaluate the estimability of the unknown parameters involved in the Sips and Toth adsorption isotherm equations. The most estimable parameters were then identified using experimental data measured at three different temperatures, i.e. 288, 303 and 313 K. Experimental breakthrough fronts at different ammonia concentrations and gas flow rates were then measured and used to determine the overall mass transfer coefficient (kLDF), the axial dispersion coefficient (Dax), the effective diffusion coefficient (De) and the intracrystalline diffusion coefficient (Dµ) involved in the model equations, implemented and solved within Comsol Multiphysics® software. It was demonstrated that the adsorption process are limited by the diffusion and adsorption of ammonia on the zinc sulphate crystal. The identified models were then validated by means of four additional breakthrough fronts that were different from those used to identify the parameters. The model predictions and the experimental measurements showed a very agreement which is quantified by means of performance indices and confirmed by a Kolmogorov-Smirnov test. Finally, the CFD simulation of the gas flow in an air purification box was carried out by developing a dynamic model that takes into account the geometry and hydrodynamics. These models have improved the understanding of the adsorption process and can be used as a predictive tool for the design and optimization of air purification boxes used to equip cabins with pressurization and air-conditioning of mechanical devices
Kourieh, Reem. "Synthèse et caractérisation de catalyseurs de type oxydes mixtes pour des applications environnementales". Phd thesis, Université Claude Bernard - Lyon I, 2012. http://tel.archives-ouvertes.fr/tel-00993106.
Texto completo da fonteSchneider, Solange. "Molybdophosphate d'ammonium immobilisé sur silice mésoporeuse pour l'adsorption sélective du radiocésium". Thesis, Université Laval, 2012. http://www.theses.ulaval.ca/2012/29696/29696.pdf.
Texto completo da fonteRadiocesium (137Cs) sources are commercially used in medical and industrial domains. Several methods, including γ-spectroscopy, can detect low concentrations of 137Cs. However, only mass spectroscopy can achieve the determination of the 135Cs/137Cs, which is important to characterize the radiosource. Radiocesium having several isobaric interferences, it is hence necessary to chemically separate the cesium from its matrix. Cesium separation has been studied by using ammonium molybdophosphate (AMP) based adsorbents, this salt being known to be selective to Cs+. These sorbents are supported on mesoporous silicas (SBA-15), which allows to enhance the specific surface of the material and thus stabilizes the cationic exchanger, allowing regeneration. Materials have been analysed by inorganic mass spectrometry, X-ray diffration, thermogravimetric analysis and by X-ray photoelectron spectroscopy to determine their chemicals characteristics. Physical characteristics have been determined by electronic microscopy and by nitrogen physisorption at -196 °C. Extraction capacities have also been studied by inorganic mass spectrometry.