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The Effect of Phosphorus Exposure on Diesel Oxidation Catalysts-Part I: Activity Measurements, Elementary and Surface Analyses

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The Effect of Phosphorus Exposure on Diesel Oxidation Catalysts-Part I : Activity Measurements, Elementary and Surface Analyses. / Kärkkäinen, Marja; Kolli, Tanja; Honkanen, Mari; Heikkinen, Olli; Huuhtanen, Mika; Kallinen, Kauko; Lepistö, Toivo; Lahtinen, Jouko; Vippola, Minnamari; Keiski, Riitta L.

In: Topics in Catalysis, Vol. 58, No. 14, 10.2015, p. 961-970.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Kärkkäinen, M, Kolli, T, Honkanen, M, Heikkinen, O, Huuhtanen, M, Kallinen, K, Lepistö, T, Lahtinen, J, Vippola, M & Keiski, RL 2015, 'The Effect of Phosphorus Exposure on Diesel Oxidation Catalysts-Part I: Activity Measurements, Elementary and Surface Analyses', Topics in Catalysis, vol. 58, no. 14, pp. 961-970. https://doi.org/10.1007/s11244-015-0464-z

APA

Kärkkäinen, M., Kolli, T., Honkanen, M., Heikkinen, O., Huuhtanen, M., Kallinen, K., ... Keiski, R. L. (2015). The Effect of Phosphorus Exposure on Diesel Oxidation Catalysts-Part I: Activity Measurements, Elementary and Surface Analyses. Topics in Catalysis, 58(14), 961-970. https://doi.org/10.1007/s11244-015-0464-z

Vancouver

Author

Kärkkäinen, Marja ; Kolli, Tanja ; Honkanen, Mari ; Heikkinen, Olli ; Huuhtanen, Mika ; Kallinen, Kauko ; Lepistö, Toivo ; Lahtinen, Jouko ; Vippola, Minnamari ; Keiski, Riitta L. / The Effect of Phosphorus Exposure on Diesel Oxidation Catalysts-Part I : Activity Measurements, Elementary and Surface Analyses. In: Topics in Catalysis. 2015 ; Vol. 58, No. 14. pp. 961-970.

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@article{d6ad6ce9b75441ec84fde191648aeb9a,
title = "The Effect of Phosphorus Exposure on Diesel Oxidation Catalysts-Part I: Activity Measurements, Elementary and Surface Analyses",
abstract = "The effects of phosphorus poisoning on the activity of PtPd and Pt diesel oxidation catalysts and on the activity of the support material were investigated using the gas phase laboratory-scale-aging procedure. The catalysts were treated using two different phosphorus concentrations (0.065 and 0.13 mol/L (NH4)(2)HPO). The deactivation was studied by inductively coupled plasma optical emission spectroscopy, electron microscopy, X-ray diffractometry, X-ray photoelectron spectrometry and Fourier-transform infrared reflectance, N-2-physisorption, and activity measurements with CO, C3H6 and NO. The amount of accumulated phosphorus was higher on the Pt catalyst surface than on the PtPd catalyst and significantly higher on the surface of the bare support material. Phosphorus concentration was uniform throughout the support layer (down to the 10 mu m), and phosphorus was found as phosphate, although it can also form compounds like AIPO(4) with the support. The treatment with low phosphorus concentration was found to have a clear deactivation effect only for C3H6 oxidation activity on PtPd catalysts above 200 degrees C. The treatment with high phosphorus concentration significantly decreased the activity of both the PtPd and Pt catalysts. In particular, the C3H6 and NO oxidation activities of the fresh and P-treated Pt catalysts were higher than those of the PtPd catalysts for the entire temperature range.",
keywords = "Phosphorus, Deactivation, Poisoning, Diesel oxidation catalyst, Platinum, Palladium, NO OXIDATION, THERMAL-STABILITY, DEACTIVATION, REDUCTION, MECHANISMS, BEHAVIOR, EXHAUST",
author = "Marja K{\"a}rkk{\"a}inen and Tanja Kolli and Mari Honkanen and Olli Heikkinen and Mika Huuhtanen and Kauko Kallinen and Toivo Lepist{\"o} and Jouko Lahtinen and Minnamari Vippola and Keiski, {Riitta L.}",
year = "2015",
month = "10",
doi = "10.1007/s11244-015-0464-z",
language = "English",
volume = "58",
pages = "961--970",
journal = "Topics in Catalysis",
issn = "1022-5528",
publisher = "SPRINGER/PLENUM PUBLISHERS",
number = "14",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - The Effect of Phosphorus Exposure on Diesel Oxidation Catalysts-Part I

T2 - Activity Measurements, Elementary and Surface Analyses

AU - Kärkkäinen, Marja

AU - Kolli, Tanja

AU - Honkanen, Mari

AU - Heikkinen, Olli

AU - Huuhtanen, Mika

AU - Kallinen, Kauko

AU - Lepistö, Toivo

AU - Lahtinen, Jouko

AU - Vippola, Minnamari

AU - Keiski, Riitta L.

PY - 2015/10

Y1 - 2015/10

N2 - The effects of phosphorus poisoning on the activity of PtPd and Pt diesel oxidation catalysts and on the activity of the support material were investigated using the gas phase laboratory-scale-aging procedure. The catalysts were treated using two different phosphorus concentrations (0.065 and 0.13 mol/L (NH4)(2)HPO). The deactivation was studied by inductively coupled plasma optical emission spectroscopy, electron microscopy, X-ray diffractometry, X-ray photoelectron spectrometry and Fourier-transform infrared reflectance, N-2-physisorption, and activity measurements with CO, C3H6 and NO. The amount of accumulated phosphorus was higher on the Pt catalyst surface than on the PtPd catalyst and significantly higher on the surface of the bare support material. Phosphorus concentration was uniform throughout the support layer (down to the 10 mu m), and phosphorus was found as phosphate, although it can also form compounds like AIPO(4) with the support. The treatment with low phosphorus concentration was found to have a clear deactivation effect only for C3H6 oxidation activity on PtPd catalysts above 200 degrees C. The treatment with high phosphorus concentration significantly decreased the activity of both the PtPd and Pt catalysts. In particular, the C3H6 and NO oxidation activities of the fresh and P-treated Pt catalysts were higher than those of the PtPd catalysts for the entire temperature range.

AB - The effects of phosphorus poisoning on the activity of PtPd and Pt diesel oxidation catalysts and on the activity of the support material were investigated using the gas phase laboratory-scale-aging procedure. The catalysts were treated using two different phosphorus concentrations (0.065 and 0.13 mol/L (NH4)(2)HPO). The deactivation was studied by inductively coupled plasma optical emission spectroscopy, electron microscopy, X-ray diffractometry, X-ray photoelectron spectrometry and Fourier-transform infrared reflectance, N-2-physisorption, and activity measurements with CO, C3H6 and NO. The amount of accumulated phosphorus was higher on the Pt catalyst surface than on the PtPd catalyst and significantly higher on the surface of the bare support material. Phosphorus concentration was uniform throughout the support layer (down to the 10 mu m), and phosphorus was found as phosphate, although it can also form compounds like AIPO(4) with the support. The treatment with low phosphorus concentration was found to have a clear deactivation effect only for C3H6 oxidation activity on PtPd catalysts above 200 degrees C. The treatment with high phosphorus concentration significantly decreased the activity of both the PtPd and Pt catalysts. In particular, the C3H6 and NO oxidation activities of the fresh and P-treated Pt catalysts were higher than those of the PtPd catalysts for the entire temperature range.

KW - Phosphorus

KW - Deactivation

KW - Poisoning

KW - Diesel oxidation catalyst

KW - Platinum

KW - Palladium

KW - NO OXIDATION

KW - THERMAL-STABILITY

KW - DEACTIVATION

KW - REDUCTION

KW - MECHANISMS

KW - BEHAVIOR

KW - EXHAUST

U2 - 10.1007/s11244-015-0464-z

DO - 10.1007/s11244-015-0464-z

M3 - Article

VL - 58

SP - 961

EP - 970

JO - Topics in Catalysis

JF - Topics in Catalysis

SN - 1022-5528

IS - 14

ER -