Littérature scientifique sur le sujet « End-Of-Pipe catalytic system »
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Articles de revues sur le sujet "End-Of-Pipe catalytic system"
Sparks, Amy, Lynn Gladden, Colin Brennan et Mick Mantle. « Operando Nuclear Magnetic Resonance (NMR) Studies of a Trickle-bed Reactor Using D-T2 Correlations ». CHIMIA 78, no 3 (27 mars 2024) : 129–34. http://dx.doi.org/10.2533/chimia.2024.129.
Texte intégralĐuričin, Dragan, et Iva Herceg-Vuksanović. « Envisioning a new economic system after the transition from pandemic to endemic : Serbia's perspective ». Ekonomika preduzeca 70, no 1-2 (2022) : 1–22. http://dx.doi.org/10.5937/ekopre2202001d.
Texte intégralMorent, R., J. Dewulf, N. Steenhaut, C. Leys et H. Van Langenhove. « Hybrid Plasma-Catalyst System for the Removal of Trichloroethylene in Air ». Journal of Advanced Oxidation Technologies 9, no 1 (1 janvier 2006). http://dx.doi.org/10.1515/jaots-2006-0108.
Texte intégralKuntz, Christian, Paul Jakob Jägerfeld, Joe Mmbaga, Robert E. Hayes et Olaf Deutschmann. « Coupling of Liquid and Surface Chemistry in Urea SCR Systems ». Emission Control Science and Technology, 28 mars 2023. http://dx.doi.org/10.1007/s40825-023-00224-1.
Texte intégralThèses sur le sujet "End-Of-Pipe catalytic system"
Zheng, Yuanshuang. « Intelligent end-of-pipe catalytic systems suited for alternative fuels ». Electronic Thesis or Diss., Université de Lille (2022-....), 2022. http://www.theses.fr/2022ULILR038.
Texte intégralThe objective of this thesis work is to develop catalysts based on perovskite and palladium for the treatment of traces of methane from vehicles running on natural gas. In more detail, the study is based on the combination of two active catalysts, each having a role in the targeted reaction - the catalytic combustion of methane. Perovskites based on LaMnO3 composition with excellent high temperature methane oxidation activity are used as carriers. Among them, the non-stoichiometric study of lanthanum and the partial substitutions of lanthanum by potassium and strontium have been used to modify the structure of perovskite to generate distortions for better catalytic activity and mobility of the oxygen. Palladium, recognized as a noble metal with excellent low temperature methane catalytic performance, has been incorporated into perovskite catalysts by different calcination methods (i.e. one-pot method and sequential method by synthesis of the sol-gel method of citric acid). Given the consideration of cost control, the objective is to reduce the use of palladium as much as possible, from 1% to 0.5% by mass in the experiment. Therefore, low palladium boosted perovskite composite catalytic system is the research strategy of this topic around catalytic methane combustion. In order to study the physicochemical properties of catalysts, characterization methods such as thermogravimetric analysis, X-ray diffractometry, N2-physisorption, H2-temperature-programmed reduction, O2-temperature-programmed oxidation, O2-temperature-programmed desorption/mass spectrometry, scanning electron microscopy/energy dispersive X-ray spectroscopy, transmission electron microscopy/energy dispersive X-ray spectroscopy, X-ray photoelectron spectrometry and Inductively Coupled Plasma Mass Spectrometry are used to analyze surface and bulk properties of target catalysts.The second part of this thesis was devoted to the kinetics of methane oxidation by the high-throughput reaction method. The study of the kinetics was carried out by the approach through the theoretical and experimental combination to study the mechanisms of the different proposals of the active sites and the source of reactive species of active oxygen before and after aging. Moreover, in the whole reaction process, the catalysts with different palladium incorporation methods exhibit the different reaction mechanisms. This study is instructive to investigate the nature and synergy of methane oxidation on palladium-boosted perovskite and the factors influencing catalyst design.In practice, this combination of catalysts has been used as three-way catalysts for simulated gas aftertreatment of natural gas engines. The catalysts were tested in the laboratory-scale plug-flow reactor according to the same experimental plan as the kinetic part. In the current of methane traces, the reaction becomes more difficult and more complicated in the presence of NO, CO, water vapor and CO2. The complete oxidation of methane, the partial oxidation of methane, the reduction of NO to nitrogen or even to ammonia have been discovered and investigated by the reaction budget.Keywords: Perovskite / Methane Oxidation / Palladium / Catalytic Aftertreatment / Natural Gas Engine