Abstract
This paper describes an expeditious and reliable method for determining the thermal effects in a static condition of commercial NOx storage catalysts (NSCs) using scanning electron microscopy with an energy dispersive X-ray analytical system (SEM/EDS). It is worth remarking that possible changes in the morphology and in the elemental composition of the catalyst may be considered as the most important causes of the lower conversion of NOx. The information attained in this work indicates that Pt nanoparticle sintering is strongly increased by the oxygen exposure, and this can be considered a very useful preliminary investigation for the studies already present in the literature on the efficiency of NSCs.
Highlights
Research has focused on the development of catalytic and photocatalytic methods based on the use of nanoparticles (NPs), which can be used in various applications related to chemical production as well as environmental technology
Investigations began on the ceramic NOx storage catalysts (NSCs) catalyst
Investigations began on themorphologic ceramic NSCvariations catalyst
Summary
Research has focused on the development of catalytic and photocatalytic methods based on the use of nanoparticles (NPs), which can be used in various applications related to chemical production as well as environmental technology. In the latter context, of wide interest is the reduction of greenhouse gases with special focus on the abatement of NOx using nanocatalysis [1,2,3]. The NOx storage catalyst (NSC) is one of the most promising concepts for the reduction of NOx from exhaust gas of lean burn combustion engines such as Diesel engines [5,6]. The catalytic NSC converter is made of a ceramic (synthetic cordierite 2MgO·2Al2 O3 ·5SiO2 )
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