Abstract
The activity of Rh/CeO2 for NO reduction by C3H6 was gradually deceased by mixing with ZrO2 until 68 mol%. Rh supported on CeO2–ZrO2 with higher OSC was found to show lower catalytic activity. High OSC of CeO2–ZrO2 would probably stabilize the surface of Rh in oxidized state, resulting in low activity and low efficiency of C3H6 utilization for NO reduction. In situ FT-IR spectroscopy suggested that mononitrosyl species such as Rh(NO)δ− and Rh(NO)δ+ are reaction intermediates in the NO–C3H6–O2 reaction over Rh/CeO2–ZrO2 catalysts.
Similar content being viewed by others
References
Kummer JT (1979) Prog Energ Combust Sci 6:177
Jollie D (2006) In: PLATINUM 2007. Johnson Matthey, UK, p 28
Haneda M, Shinoda K, Nagane A, Houshito O, Takagi H, Nakahara Y, Hiroe K, Fujitani T, Hamada H (2008) J Catal 259:223
Takeguchi T, Manabe S, Kikuchim R, Eguchi K, Kanazawa T, Matsumoto S, Ueda W (2005) Appl Catal A 293:91
Davydov AA (1990) In: Rochester CH (ed) Infrared spectroscopy of adsorbed species on the surface of transition metal oxides. Wiley, Chichester, p 29
Chauvin C, Saussey J, Lavalley JC, Idriss H, Hindermann J, Kiennemann A, Chaumette P, Courty P (1990) J Catal 121:56
Dujardin C, Mamede A-S, Payen E, Sombret B, Huvenne JP, Grangrer P (2004) Top Catal 30/31:347
Shelef M, Graham GW (1994) Catal Rev-Sci Eng 36:433
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Haneda, M., Houshito, O., Takagi, H. et al. Catalytic Performance of Aged Rh/CeO2–ZrO2 for NO–C3H6–O2 Reaction Under a Stoichiometric Condition. Top Catal 52, 1868–1872 (2009). https://doi.org/10.1007/s11244-009-9347-5
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11244-009-9347-5