caa a22 4500 606173536 CHVBK 20210128100733.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s11244-015-0464-z doi (NATIONALLICENCE)springer-10.1007/s11244-015-0464-z The Effect of Phosphorus Exposure on Diesel Oxidation Catalysts—Part I: Activity Measurements, Elementary and Surface Analyses [Elektronische Daten] [Marja Kärkkäinen, Tanja Kolli, Mari Honkanen, Olli Heikkinen, Mika Huuhtanen, Kauko Kallinen, Toivo Lepistö, Jouko Lahtinen, Minnamari Vippola, Riitta Keiski] 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 0.13mol/L (NH4)2HPO). 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, N2-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 10μm), and phosphorus was found as phosphate, although it can also form compounds like AlPO4 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°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. Springer Science+Business Media New York, 2015 Phosphorus nationallicence Deactivation nationallicence Poisoning nationallicence Diesel oxidation catalyst nationallicence Platinum nationallicence Palladium nationallicence Kärkkäinen Marja Environmental and Chemical Engineering, Faculty of Technology, University of Oulu, POB 4300, 90014, Oulu, Finland aut Kolli Tanja Environmental and Chemical Engineering, Faculty of Technology, University of Oulu, POB 4300, 90014, Oulu, Finland aut Honkanen Mari Department of Materials Science, Tampere University of Technology, POB 589, 33101, Tampere, Finland aut Heikkinen Olli Department of Applied Physics, Aalto University, POB 14100, 00076, Aalto, Finland aut Huuhtanen Mika Environmental and Chemical Engineering, Faculty of Technology, University of Oulu, POB 4300, 90014, Oulu, Finland aut Kallinen Kauko Catalyst Research, Dinex Ecocat Oy, Typpitie 1, 90620, Oulu, Finland aut Lepistö Toivo Department of Materials Science, Tampere University of Technology, POB 589, 33101, Tampere, Finland aut Lahtinen Jouko Department of Applied Physics, Aalto University, POB 14100, 00076, Aalto, Finland aut Vippola Minnamari Department of Materials Science, Tampere University of Technology, POB 589, 33101, Tampere, Finland aut Keiski Riitta Environmental and Chemical Engineering, Faculty of Technology, University of Oulu, POB 4300, 90014, Oulu, Finland aut Topics in Catalysis Springer US; http://www.springer-ny.com 58/14-17(2015-10-01), 961-970 1022-5528 58:14-17<961 2015 58 11244 https://doi.org/10.1007/s11244-015-0464-z text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11244-015-0464-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kärkkäinen Marja Environmental and Chemical Engineering, Faculty of Technology, University of Oulu, POB 4300, 90014, Oulu, Finland aut NATIONALLICENCE 700 1- Kolli Tanja Environmental and Chemical Engineering, Faculty of Technology, University of Oulu, POB 4300, 90014, Oulu, Finland aut NATIONALLICENCE 700 1- Honkanen Mari Department of Materials Science, Tampere University of Technology, POB 589, 33101, Tampere, Finland aut NATIONALLICENCE 700 1- Heikkinen Olli Department of Applied Physics, Aalto University, POB 14100, 00076, Aalto, Finland aut NATIONALLICENCE 700 1- Huuhtanen Mika Environmental and Chemical Engineering, Faculty of Technology, University of Oulu, POB 4300, 90014, Oulu, Finland aut NATIONALLICENCE 700 1- Kallinen Kauko Catalyst Research, Dinex Ecocat Oy, Typpitie 1, 90620, Oulu, Finland aut NATIONALLICENCE 700 1- Lepistö Toivo Department of Materials Science, Tampere University of Technology, POB 589, 33101, Tampere, Finland aut NATIONALLICENCE 700 1- Lahtinen Jouko Department of Applied Physics, Aalto University, POB 14100, 00076, Aalto, Finland aut NATIONALLICENCE 700 1- Vippola Minnamari Department of Materials Science, Tampere University of Technology, POB 589, 33101, Tampere, Finland aut NATIONALLICENCE 700 1- Keiski Riitta Environmental and Chemical Engineering, Faculty of Technology, University of Oulu, POB 4300, 90014, Oulu, Finland aut NATIONALLICENCE 773 0- Topics in Catalysis Springer US; http://www.springer-ny.com 58/14-17(2015-10-01), 961-970 1022-5528 58:14-17<961 2015 58 11244