Simultaneous effect of carbon and water on NOx adsorption on a stabilized Pt–Ba/Al2O3 catalyst

Wu, Dongliang; Tschamber, Valérie; Limousy, Lionel; Klein, J.; Westermann, Alexandre; Azambre, B.; Fechete, Ioana; Garin, F.

doi:10.1016/j.crci.2014.04.010

Cited by 13 publications

(8 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The occurrence of a direct surface reaction between carbon particles and NO x stored species was also proposed by Tschamber and coworkers [94][95][96][97] to explain the decrease in the NO x storage activity when soot is present. The proximity between the storage sites, Pt sites, and their contact with soot is a key factor in the NO x storage behavior of the catalysts in the presence of soot according to the two possible pathways for NO x storage from NO/O 2 mixtures proposed by the literature [91], i.e., the "nitrate" and "nitrite" route, respectively.…”

Section: Dpnr Catalysts For the Simultaneous Removal Of No X And Sootmentioning

confidence: 71%

An Overview on the Catalytic Materials Proposed for the Simultaneous Removal of NOx and Soot

Castoldi

2020

Materials

View full text Add to dashboard Cite

Vehicular pollution has become a major problem in urban areas due to the exponential increase in the number of automobiles. Typical exhaust emissions, which include nitrogen oxides (NOx), hydrocarbons (HC), carbon monoxide (CO), soot, and particulate matter (PM), doubtless have important negative effects on the environment and human health, including cardiovascular effects such as cardiac arrhythmias and heart attacks, and respiratory effects such as asthma attacks and bronchitis. The mitigation measures comprise either the use of clean alternative fuels or the use of innovative technologies. Several existing emission control technologies have proven effective at controlling emissions individually, such as selective catalytic reduction (SCR) and lean NOx trap (LNT) to reduce NOx and diesel particulate filter (DPF) specifically for PM abatement. These after-treatment devices are the most profitable means to reduce exhaust emissions to acceptable limits (EURO VI norms) with very little or no impact on the engine performances. Additionally, the relative lack of physical space in which to install emissions-control equipment is a key challenge for cars, especially those of small size. For this reason, to reduce both volume and cost of the after-treatment devices integrated catalytic systems (e.g., a sort of a “single brick”) have been proposed, reducing both NOx and PM simultaneously. This review will summarize the currently reported materials for the simultaneous removal of NOx and soot, with particular attention to their nature, properties, and performances.

show abstract

Section: Dpnr Catalysts For the Simultaneous Removal Of No X And Sootmentioning

confidence: 71%

An Overview on the Catalytic Materials Proposed for the Simultaneous Removal of NOx and Soot

Castoldi

2020

Materials

View full text Add to dashboard Cite

show abstract

“…There are chelating and bridging nitrates present, which are denoted by the absorption bands at 1521 and 1629 cm –1 , respectively. At higher wavenumbers, the bands at 1767 cm –1 are ascribed to the adsorbed N 2 O 4 , which are believed to be the addition compounds, for example, Cu(NO 3 ) 2 ·N 2 O 4 and Mg(NO 3 ) 2 ·N 2 O 4 . , The specified assignments of these various adsorption bands are listed in Table .…”

Section: Resultsmentioning

confidence: 99%

Impact of Soot on NO_x Adsorption over Cu-Modified Hydrotalcite-Derived Lean NO_x Trap Catalyst

Chen

et al. 2017

Langmuir

View full text Add to dashboard Cite

The impact of soot on NO adsorption was studied over a Cu-modified hydrotalcite-derived lean NO trap catalyst in a NO + O atmosphere. Powder X-ray diffraction, scanning electron microscopy, Raman scattering spectroscopy, and X-ray photoelectron spectroscopy were used to characterize the surface properties of the pure catalyst and the soot/catalyst mixture. The adsorbed NO species on the samples were evaluated by in situ diffuse reflectance Fourier transform spectroscopy. The soot coverage decreases the available adsorption sites on the surface of the catalyst, and a portion of active oxygen species are consumed by the soot oxidation during He pretreatment process. The NO adsorption on two catalyst samples simultaneously undergoes two routes: the "nitrite route" and the "nitrate route". The "nitrite route" is more dominant than the "nitrate route". During NO adsorption, the soot oxidation weakens the NO oxidation to NO, and the released CO competes with NO on the adsorption sites. Moreover, the temperature-programmed desorption tests indicate that the presence of soot reduces the NO storage capacity of the catalyst and shifts the NO desorption peak to the lower temperature range by 50 °C.

show abstract

“…The issue of environmental remediation is one of the most discussed modern challenges. The without by-products [5][6][7][8]. However, organic waste such as that from sewage or farming activities also have an important environmental impact.…”

Section: Introductionmentioning

confidence: 99%

TiO 2 , ZnO, and SnO 2 -based metal oxides for photocatalytic applications: principles and development

Ishchenko¹,

Rogé²,

Lamblin³

et al. 2021

Comptes Rendus. Chimie

Self Cite

View full text Add to dashboard Cite

Simultaneous effect of carbon and water on NOx adsorption on a stabilized Pt–Ba/Al2O3 catalyst

Abstract: Impact simultane´de l'eau et des suies vis-a `-vis de l'adsorption des suies sur un catalyseur mode`le Pt-Ba/Al 2 O 3

Cited by 13 publications

References 60 publications

An Overview on the Catalytic Materials Proposed for the Simultaneous Removal of NOx and Soot

An Overview on the Catalytic Materials Proposed for the Simultaneous Removal of NOx and Soot

Impact of Soot on NO_x Adsorption over Cu-Modified Hydrotalcite-Derived Lean NO_x Trap Catalyst

TiO 2 , ZnO, and SnO 2 -based metal oxides for photocatalytic applications: principles and development

Contact Info

Product

Resources

About

Simultaneous effect of carbon and water on NOx adsorption on a stabilized Pt–Ba/Al2O3 catalyst

Abstract: Impact simultane´de l'eau et des suies vis-a `-vis de l'adsorption des suies sur un catalyseur mode`le Pt-Ba/Al 2 O 3

Cited by 13 publications

References 60 publications

An Overview on the Catalytic Materials Proposed for the Simultaneous Removal of NOx and Soot

An Overview on the Catalytic Materials Proposed for the Simultaneous Removal of NOx and Soot

Impact of Soot on NOx Adsorption over Cu-Modified Hydrotalcite-Derived Lean NOx Trap Catalyst

TiO 2 , ZnO, and SnO 2 -based metal oxides for photocatalytic applications: principles and development

Contact Info

Product

Resources

About

Impact of Soot on NO_x Adsorption over Cu-Modified Hydrotalcite-Derived Lean NO_x Trap Catalyst