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Appl. Sci. 2017, 7(10), 1059; doi:10.3390/app7101059

Evaluating the NOx Storage Catalysts (NSC) Aging: A Preliminary Analytical Study with Electronic Microscopy

1
Dipartimento di Chimica, Università di Bari “A. Moro”, Via Orabona 4, 70126 Bari, Italy
2
ICCOM-CNR, SS Bari, Via Orabona 4, 70126 Bari, Italy
3
IPCF-CNR, SS Bari, via E. Orabona 4, 70125 Bari, Italy
4
CONISMA, SS Bari, via E. Orabona 4, 70125 Bari, Italy
*
Authors to whom correspondence should be addressed.
Received: 4 August 2017 / Revised: 2 October 2017 / Accepted: 12 October 2017 / Published: 13 October 2017
(This article belongs to the Section Materials)
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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. View Full-Text
Keywords: NOx storage catalysts; thermal aging; electronic microscopy NOx storage catalysts; thermal aging; electronic microscopy
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Bellebuono, L.; Annese, C.; Catucci, L.; Colafemmina, G.; Comparelli, R.; Cotugno, P.; Fracassi, F.; Fusco, C.; Nacci, A.; D’Accolti, L. Evaluating the NOx Storage Catalysts (NSC) Aging: A Preliminary Analytical Study with Electronic Microscopy. Appl. Sci. 2017, 7, 1059.

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