Three-way catalytic performance and change in the valence state of Rh in Y- and Pr-doped Rh/ZrO₂ under lean/rich perturbation conditions

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• 作者：Masaaki Haneda^a ; ^b ; ^{haneda.masaaki@nitech.ac.jp} ; Yasutaka Tomida^a ; Teruo Takahashi^c ; Yousuke Azuma^c ; Tomonari Fujimoto^c
• 关键词：Three-way catalyst ; Rare earth additives ; Rhodium ; in situ XANES
• 刊名：Catalysis Communications
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：90
• 期：Complete
• 页码：1-4
• 全文大小：472 K
• 卷排序：90

文摘

Y2O3 is effective additive for Rh/ZrO2 three-way catalyst. Y2O3/ZrO2 support can keep the Rh species in catalytically active reducing state. Rh in Rh/Pr6O11/ZrO2 is stabilized in oxidizing state under reaction conditions. Rh/Y2O3/ZrO2 still showed the highest activity in lean/rich perturbation condition.