NDLI: Selective catalytic reduction of NO with CO on Pt/W–Ce

Content Provider	Springer Nature Link
Author	Zhu, Hai ou Kim, Jeong Rang Ihm, Son Ki
Copyright Year	2009
Abstract	Various Pt catalysts (Pt/ZrO$_{2}$, Pt/CeO$_{2}$, Pt/CeZrO, Pt/WO$_{3}$/ZrO$_{2}$ and Pt/WO$_{3}$/CeZrO) were prepared and characterized, and their catalytic reduction reactions of NO by CO, with or without the presence of excess oxygen, were investigated. The results of temperature-programmed experiments showed that CO could be easily oxidized over Pt/CeO$_{2}$ and Pt/CeZrO while the introduction of WO$_{3}$ into the catalyst (Pt/WO$_{3}$/CeZrO) inhibited the reduction of catalyst surface; NO could not dissociate over those catalysts in oxidized state but after CO reduction at a low temperature, NO dissociation took place only over Pt/CeO$_{2}$ and Pt/CeZrO catalysts. For NO + CO reaction, those easily reduced catalysts Pt/CeO$_{2}$ and Pt/CeZrO exhibited better catalytic performances, and NO could be rapidly converted below 350 °C. For the reaction with the presence of excess O$_{2}$, the NO conversions were significantly inhibited, but better NO conversions were obtained over the tungstate-contained catalysts when compared with Pt/CeO$_{2}$ and Pt/CeZrO. The higher activities of Pt/W–Ce–Zr catalysts were attributed to their high acidities.
Starting Page	207
Ending Page	215
Page Count	9
File Format	PDF
ISSN	01331736
Journal	Reaction Kinetics and Catalysis Letters
Volume Number	97
Issue Number	2
e-ISSN	15882837
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-07-10
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	CeO$_{2}$ ZrO$_{2}$ WO$_{3}$ NO reduction CO Industrial Chemistry/Chemical Engineering Physical Chemistry Catalysis
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Catalysis

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