• Aucun résultat trouvé

Ceria-supported small Pt and Pt3Sn nanoparticles for NOx-assisted soot oxidatio

N/A
N/A
Info
Télécharger
Protected

Academic year: 2021

Partager "Ceria-supported small Pt and Pt3Sn nanoparticles for NOx-assisted soot oxidatio"

Copied!
1
0
0

Chargement.... (Voir le texte intégral maintenant)

Texte intégral

(1)

Ceria-supported small Pt and Pt3Sn nanoparticles for

NOx-assisted soot oxidation

Authors

Tahrizi Andana, Marco Piumetti, Samir Bensaid, Laurent Veyre, Chloé Thieuleux, Nunzio Russo, Debora Fino, Elsje Alessandra Quadrelli, Raffaele Pirone

Publication date

2017/7/15

Journal

Applied Catalysis B: Environmental

Volume 209 Pages 295-310 Publisher Elsevier Description

Introduced herein are small Pt and Pt3Sn nanoparticles, stabilized with organosilane or

organostannane and impregnated on ceria support, as active sites for NOx-assisted soot

oxidation reaction. The catalysts have been tested with four reactions: CO oxidation, NO oxidation, NOx-free soot oxidation and finally NOx-assisted soot oxidation. Our Pt

nanoparticles reportedly possess remarkable catalytic activities in CO oxidation, as they actively convert CO at 50 °C, while the alloy Pt3Sn nanoparticles are active at higher

temperature. The Pt nanoparticles also mediate more actively NO oxidation than their alloy counterpart, leading to more NO2 production beneficial for soot oxidation. The influence of Pt

and Pt3Sn active sites on the catalytic activity during NOx-free soot oxidation becomes less

prominent than the morphology, due to the high dependency of the reaction on catalyst structure. The presence of Sn …

Références

Télécharger maintenant ( PDF - 1 Page - 243.22 KB )

Documents relatifs

Factors associated with acquisition of glycopeptide-resistant enterococci during a single-strain outbreak

Following multivariate analysis, antibiotics during hospitalisation (Pr = 0.968), number of hospitalisation days in the year (Pr = 0.964), antacids intake (Pr = 0.878) (with a

Is exposure to night-time traffic noise a risk factor for purchase of anxiolytic–hypnotic medication? A cohort study

1 Besides the auditory and cardiovascular effects, 2 neither of which are studied here, the published studies suggest that chronic exposure to environmental aircraft noise increases

تحديد مستويات معيارية لبعض المهارات الأساسية للاعبي كرة القدم الناشئين القسم الوطني 1

‫* اﺳﺗﻧﺗﺟﻧﺎ وﺟود ﻓروق ﻟﺻﺎﻟﺢ ﻻﻋﺑﻲ اﻟﻣﻧﺎطق اﻟﺷﻣﺎﻟﯾﺔ ﻓﻲ ﻣﻬﺎرة ﺿرب اﻟﻛرة ﻋﻠﻰ ﺣﺳﺎب اﻟﻣﻧﺎطق‬ ‫اﻷﺧرى وﻣﻌظم اﻟﻌﯾﻧﺔ ﺗﻘﻊ ﻓﻲ اﻟﻣﺳﺗوى اﻟﻣﺗوﺳط‪.‬‬ ‫* ﻓﻲ اﺧﺗﺑﺎر

Access to antiretroviral drugs and AIDS management in Senegal

Persons qualifying for antiretroviral (ARV) therapy are selected on the basis of immunological and clinical criteria, regardless of economic and social considerations. A system

تحليل المستويات للمواهب الرياضية الجزائرية الشابة في العاب القوى بين مرحلة التكوين ومرحلة المنافسة الرياضية

‫ﻣن اﻟرﺟـل‪ ،‬و ﯾﺧﺗﻠف ﻋﻠﻰ أﻛﺛـر ﻣن ﺻﻌﯾـد‪ .‬ﻧﺣﺎﻓـﺔ ﺟﺳﻣﻪ وﻣﯾزات ﺧﺻﺎﺋﺻﻪ اﻟﻧﻔﺳﯾـﺔ ﺗﺗطﻠب اﻷﺧـذ‬ ‫ﺑﻌﯾـن اﻻﻋﺗﺑﺎر اﺣﺗﯾﺎطﺎت ﻣﻧﻬﺟﯾـﺔ اﻟﺗﻲ ﺗﻌطﻲ

Surveillance des comportements face au VIH/sida chez les hommes ayant des rapports sexuels avec des hommes — Suisse, 1992-2004

Entre 2000 et 2004, on note également, parmi les plus de 30 ans, une augmentation du nombre médian de partenaires avec lesquels les répondants ont pratiqué la pénétration

Et quand le dernier pétale se détache de la tige, quelque chose meurt

Tout cela, sans se presser et seuls, car les vendeurs sont là uniquement pour nous aider dans notre choix à la fin de la visite. Le déplacement en vaut la

La supervision du raisonnement clinique au chevet du malade : quoi et comment ? | Louvain Médical

Afin de faciliter la supervision du raisonnement clinique au chevet du malade, nous proposons cinq éléments prioritaires à observer et à discuter avec l’étudiant : ses