1999
DOI: 10.1016/s0920-5861(99)00024-3
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Catalytic converters: state of the art and perspectives

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Cited by 373 publications
(200 citation statements)
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References 27 publications
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“…125,126 Though honeycombs have much lower pressure drop as compared to packed bed systems, they lack other important features, e.g. radial mass flow, radial heat exchange and tortuosity, which are present in packed bed configurations to a fair extent.…”
Section: Zeolites On Consolidated (Structured) Supports Via Coatingmentioning
confidence: 99%
“…125,126 Though honeycombs have much lower pressure drop as compared to packed bed systems, they lack other important features, e.g. radial mass flow, radial heat exchange and tortuosity, which are present in packed bed configurations to a fair extent.…”
Section: Zeolites On Consolidated (Structured) Supports Via Coatingmentioning
confidence: 99%
“…Portanto este trabalho sugere que o uso de suportes redutíveis pode produzir uma inibição parcial do envenenamento por cloreto. Catalisadores com suportes mistos, onde um dos óxidos é redutível, foram muito estudados nos últimos anos [32][33][34][35][36] , sendo que esses sistemas mostram melhor atividade catalítica que os catalisadores que usam alumina pura como suporte [32][33][34] .…”
Section: Análise Por Espectroscopia De Fotoelétrons Excitados Por Raiunclassified
“…This problem may be resolved by the use of multilayer formulations, using a first (higher loaded) Pd/Al 2 O 3 layer which partially handles NOx removal, the most demanding reaction in the case of Pd-based systems, and a second layer of PdCZA which eliminates the remaining pollutants. An alternative route is the retention of HCs at low temperature (warm-up) using porous trapping materials, in order to allow PdZCA to reach its optimum CO/NO x elimination potential [12].…”
Section: Temperature (K)mentioning
confidence: 99%
“…During a second step, under stoichiometric conditions, HCs/CO/H 2 reactants are used to reduce the stored NO x species to N 2 [12]. a combined XANES/XRD study illustrated that only a few near-surface layers are involved in the formation of an amorphous barium nitrate phase, suggesting that the dispersion of the Ba component plays an important role in optimizing storage properties [22,23].…”
Section: Oscillating Lean-stoichiometric Conditionsmentioning
confidence: 99%