Physicochemical and Catalytic Properties of La0.8K0.2CuxMn1-xO3 for Simultaneous Removal of NO<
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- 作者：Xiaosheng Peng ; He Lin ; Wenfeng Shangguan ; Zhen Huang
- 刊名：Industrial & Engineering Chemistry Research
- 出版年：2006
- 出版时间：December 20, 2006
- 年：2006
- 卷：45
- 期：26
- 页码：8822 - 8828
- 全文大小：593K
- 年卷期：v.45,no.26(December 20, 2006)
- ISSN：1520-5045
文摘
The effects of partial substitution of Mn by Cu and calcination temperature on the physiochemical and catalyticproperties of La0.8K0.2CuxMn1-xO3 catalysts for the simultaneous removal of NOx and soot were investigated.The XRD, SEM, and BET techniques were used to characterize the catalysts, and temperature-programmedreaction (TPR) was used to determine their catalytic performances. The XRD results show that these catalystsare perovskite-type oxides. The SEM and BET results indicate that these catalysts exhibit very goodcharacteristics for multiphase reactions. The TPR results demonstrate that the performances of the catalystscan be improved by doping with appropriate cations. With increasing catalyst calcination temperature, theignition temperature of the soot increases. The catalyst La0.8K0.2Cu0.05Mn0.95O3 calcined at 750 
C was foundto be the best among the catalysts tested. The maximum yield of NO to N2 and the ignition temperature ofsoot were 54.8% and 260 C, respectively, for this catalyst.
C was foundto be the best among the catalysts tested. The maximum yield of NO to N2 and the ignition temperature ofsoot were 54.8% and 260 C, respectively, for this catalyst.