Deactivation of diesel oxidation catalysts: Vehicle- and synthetic aging correlations

Andersson, Jonas; Antonsson, Matilda; Eurenius, Lisa; Olsson, Eva; Skoglundh, Magnus

doi:10.1016/j.apcatb.2006.10.011

Cited by 95 publications

(54 citation statements)

References 19 publications

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“…SO 2 is known as strong catalyst poison blocking both precious metal sites as well as substrate components especially at low temperatures [16][17][18]. The deactivating SO x species can partially be removed by thermal treatment, whereas the efficiency is enhanced under rich conditions [16,19].…”

Section: Introductionmentioning

confidence: 99%

Study on the hydrothermal and SO2 stability of Al2O3-supported manganese and iron oxide catalysts for lean CO oxidation

et al. 2015

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Section: Introductionmentioning

confidence: 99%

Study on the hydrothermal and SO2 stability of Al2O3-supported manganese and iron oxide catalysts for lean CO oxidation

et al. 2015

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“…It may be noted that there are many alternate but similar definitions of light-off in the literature [38][39][40][41][42][43] -one of the commonly used ones refers to light-off as the temperature condition required to achieve 50% conversion although we do not use this definition in the current work. Light-off in this work assumes or implies that a plot of the steady-state (bifurcation) diagram of solid temperature (or gas phase exit conversion or temperature) as a function of the inlet gas temperature exhibits a generalized S-shaped behavior in which the ignition or light-off point is represented by the normal limit point in the feasible region.…”

Section: Light-off Locationmentioning

confidence: 95%

Light‐off location and front diffusion in a catalytic monolith reactor

Ramanathan

Gopinath

2008

AIChE Journal

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in Wiley InterScience (www.interscience.wiley.com).A one-dimensional solid-gas model has been used to study the light-off behavior in a reactor system. Techniques from nonlinear analysis are applied to first arrive at an analytical expression to estimate the light-off location in the reactor. The model is then extended to estimate the thickening of the light-off front in the vicinity of the light-off location due to heat diffusion effects in the solid substrate. Both these results are expressed in terms of all the important operating and design variables of the monolith reactor and also the reaction specific variables such as the kinetic parameters and heats of reaction. A specific case of a three-way catalyst (TWC) is numerically treated in detail to illustrate the application of this work. Finally, we focus on using the insight obtained from this study to suggest design guidelines to optimize the performance of automotive catalytic monolith reactors.

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“…S, and oil-derived poisons P, Ca, Zn) directly influence the catalytic activity via interaction with precious metals and oxides of the washcoat (poisoning). [8,[11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Sulphur and Water Treatments on the Performance of Pd/β-Zeolite Diesel Oxidation Catalysts

et al. 2011

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Sulphur, sulphur-water, and water pretreatments were done to find out the effect of these compounds on a diesel oxidation Pd/b-zeolite catalyst and b-zeolite washcoat. After pretreatments, the samples were analysed by BET, XRF, TEM-SEM, and XPS. In addition, the activity of fresh and pretreated Pd/b-zeolite catalysts was studied utilizing the by Gasmet FT-IR in production gas analysis. Sulphur compounds (SO 2 or -SO 4 ) were found to have a deactivating effect on the activity of the studied Pd/b-zeolite catalyst.

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Deactivation of diesel oxidation catalysts: Vehicle- and synthetic aging correlations

Cited by 95 publications

References 19 publications

Study on the hydrothermal and SO2 stability of Al2O3-supported manganese and iron oxide catalysts for lean CO oxidation

Study on the hydrothermal and SO2 stability of Al2O3-supported manganese and iron oxide catalysts for lean CO oxidation

Light‐off location and front diffusion in a catalytic monolith reactor

The Effect of Sulphur and Water Treatments on the Performance of Pd/β-Zeolite Diesel Oxidation Catalysts

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