Cerium and Platinum Based Diesel Fuel Additives in the Diesel Soot Abatement Technology

Makkee, M.; Jelles, S.J; Moulijn, Jacob A.

doi:10.1142/9781860949654_0012

Cited by 3 publications

(2 citation statements)

References 19 publications

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“…In addition, the metallic promotion of these oxides has been studied, to achieve better catalytic performance. In this context, the development of Ag-containing oxidic catalysts has received attention in recent years [5,[42][43][44][45][46][47][48][49][50][51][52][53][54][55][56][57][58]. In the case of the combustion of particulate matter, these catalysts have been reported as very active [42][43][44]47].…”

Section: Introductionmentioning

confidence: 99%

Zirconia-Supported Silver Nanoparticles for the Catalytic Combustion of Pollutants Originating from Mobile Sources

et al. 2019

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This work presents the physicochemical characterization and activity of zirconia-supported silver catalysts for the oxidation of pollutants present in diesel engine exhaust (propane, propene, naphthalene and soot). A series of silver-supported catalysts AgxZ (x = 1, 5 and 10 wt.%, Z = zirconia) were prepared, which were studied by various characterization techniques. The results show that silver is mainly found under the form of small metal nanoparticles (<10 nm) dispersed over the support. The metallic phase coexists with the AgOx oxidic phases. Silver is introduced onto the zirconia, generating Ag–ZrO2 catalysts with high activity for the oxidation of propene and naphthalene. These catalysts also show some activity for soot combustion. Silver species can contribute with zirconia in the catalytic redox cycle, through a synergistic effect, providing sites that facilitate the migration and availability of oxygen, which is favored by the presence of structural defects. This is a novel application of the AgOx–Ag/ZrO2 system in the combustion reaction of propene and naphthalene. The results are highly promising, given that the T50 values found for both model molecules are quite low.

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Section: Introductionmentioning

confidence: 99%

Zirconia-Supported Silver Nanoparticles for the Catalytic Combustion of Pollutants Originating from Mobile Sources

et al. 2019

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“…The second effect of the cerium additive is that it enhances the reactivity of the soot formed [19][20][21]. If it combine with traces of precious metals such as platinum catalyst may showed synergetic effect in the oxidation of soot with NO and O 2 [22]. The reaction mechanism of conversion NO to NO 2 by CeOx catalyst is unclear but possible mechanism proposed by earlier work is at low temperature ceria will adsorb NO form the soot and converted in to cerium nitrate and high temperature it will release the NO 2 and come back to its original CeO 2 phase [23].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization of Ceria Modified ZSM-5 and Its Performance Towards NO Oxidation

Hemalatha¹,

Lee²,

Lee³

et al. 2013

IJCA

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Promotion effect of surface Lanthanum in soot oxidation over ceria-based catalysts

et al. 2007

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In the present work the soot combustion activity of CeO 2 doped with lanthanum hydroxide, as surface promoter, has been investigated. TGA experiments, run under different conditions, show that, in the presence of lanthana, the reaction of soot starts at low temperature (579 K) due to the possibility to form carbonate species. The emission of CO 2 is delayed due to the strong interaction with lanthana. A mechanism of reaction involving a carbonate route is proposed.

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Cerium and Platinum Based Diesel Fuel Additives in the Diesel Soot Abatement Technology

Cited by 3 publications

References 19 publications

Zirconia-Supported Silver Nanoparticles for the Catalytic Combustion of Pollutants Originating from Mobile Sources

Zirconia-Supported Silver Nanoparticles for the Catalytic Combustion of Pollutants Originating from Mobile Sources

Synthesis, Characterization of Ceria Modified ZSM-5 and Its Performance Towards NO Oxidation

Promotion effect of surface Lanthanum in soot oxidation over ceria-based catalysts

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