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Numrering	Referens	Omslagsbild	Hitta
1.	2017 swepub:Mat__t
2.	Persson, Katarina, et al. (författare) Catalytic combustion of methane over bimetallic Pd-Pt catalysts: The influence of support materials 2006 Ingår i: Applied Catalysis B: Environmental. - : Elsevier BV. - 0926-3373. ; 66, s. 175-185 Tidskriftsartikel (refereegranskat)abstract The effect of support material on the catalytic performance for methane combustion has been studied for bimetallic palladium-platinum catalysts and compared with a monometallic palladium catalyst on alumina. The catalytic activities of the various catalysts were measured in a tubular reactor, in which both the activity and stability of methane conversion were monitored. In addition, all catalysts were analysed by temperature-programmed oxidation and in situ XRD operating at high temperatures in order to study the oxidation/reduction properties.The activity of the monometallic palladium catalyst decreases under steady-state conditions, even at a temperature as low as 470 degrees C. In situ XRD results showed that no decomposition of bulk PdO into metallic palladium occurred at temperatures below 800 degrees C. Hence, the reason for the drop in activity is probably not connected to the bulk PdO decomposition.All Pd-Pt catalysts, independently of the support, have considerably more stable methane conversion than the monometallic palladium catalyst. However. dissimilanties in activity and ability to reoxidise PdO were observed for the various support materials. Pd-Pt supported on Al2O3 was the most active catalyst in the low-temperature region, Pd-Pt supported on ceria-stabilised ZrO2 was the most active between 620 and 800 degrees C, whereas Pd-Pt supported on LaMnAl11O19 was superior for temperatures above 800 degrees C. The ability to reoxidise metallic Pd into PdO was observed to vary between the supports. The alumina sample showed a very slow reoxidation, whereas ceria-stabilised ZrO2 was clearly faster

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Författare/redaktör: Chen, C. (1); Chen, S. (1); Chen, X. (1); Chen, Y. (1); Deluca, C. (1); Endo, M. (1); visa fler...; Garcia, C. (1); Hayashi, T. (1); Hirose, M. (1); Hu, D. (1); Jackson, M. (1); Kim, H. (1); Kobayashi, T. (1); Li, B. (1); Li, L. (1); Liu, B. (1); Liu, D. (1); Liu, L. (1); Nakamura, T. (1); Ninomiya, Y. (1); Okumura, Y. (1); Sanchez, J. (1); Sasaki, Y. (1); Shimizu, S. (1); Sun, X. (1); Suzuki, Y. (1); Takahashi, Y. (1); Tanaka, S. (1); Vogel, M. (1); Wang, C. (1); Wang, F. (1); Wang, R. (1); Wu, X. (1); Yamamoto, S. (1); Yang, H. (1); Yang, Y. (1); Zhang, J. (1); Zhu, J. (1); Zhu, Y. (1); Kim, Y. (1); Zhang, R. (1); Zhao, Y. (1); Banerjee, P. (1); Gosselink, M. (1); Kanno, T. (1); Watanabe, I. (1); Gonzalez, S. (1); Suzuki, S (1); Banerjee, S. (1); Rodriguez, D. (1); visa färre...

Lärosäte: Kungliga Tekniska Högskolan (1); Karolinska Institutet (1)

Språk: Engelska (2)

Forskningsämne (UKÄ/SCB): Teknik (1)

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