CeO 2 的添加對柴油車氧化催化劑Pt/SiO 2 -Al 2 O 3 的NO氧化性能提高的影響（英文）
發(fā)布時間：2021-11-26 23:43
采用分步浸漬法制備不同CeO2含量改性SiO2-Al2O3載體的Pt/SiO2-Al2O3柴油車氧化催化劑Pt/SiO2-Al2O3-wCeO2（質(zhì)量分數(shù)w為0%,5%,10%,15%,30%）。利用固定床反應器,在模擬柴油車行駛條件下測定催化反應活性�；钚越Y(jié)果表明,無論CO和C3H6存在與否,適量CeO2的添加均明顯提高了Pt/SiO2-Al2O3柴油車氧化催化劑的NO氧化性能。其中,Pt/SiO2-Al2O3-15%CeO2表現(xiàn)出了最優(yōu)氧化性能,其能在較寬溫度范圍內(nèi)維持61%的NO2產(chǎn)率。CO-化學吸附結(jié)果表明,適量CeO2的添...
【文章來源】：物理化學學報. 2017,33(06)北大核心SCICSCD
【文章頁數(shù)】：11 頁
【文章目錄】：
1 Introduction
2 Experimental and computational section
2.1 Ce O2modified catalysts preparation
2.2 Measurement of catalytic activity
2.3 Catalyst characterization
3 Results and discussion
3.1 Catalytic performances of Ce O2-modified catalysts
3.1.1 NO oxidation comparison and CO, C3H6oxidation performances of the catalysts
3.1.2 Mutual influences between CO, C3H6and NO, NO2
3.2 Characterizations of the catalysts
3.2.1 Structural characterization of the catalysts
3.2.2 CO-chemisorption
3.2.3 Redox properties
3.2.4 Morphology and metal particle size of catalysts
4 Conclusions
本文編號：3521156
【文章來源】：物理化學學報. 2017,33(06)北大核心SCICSCD
【文章頁數(shù)】：11 頁
【文章目錄】：
1 Introduction
2 Experimental and computational section
2.1 Ce O2modified catalysts preparation
2.2 Measurement of catalytic activity
2.3 Catalyst characterization
3 Results and discussion
3.1 Catalytic performances of Ce O2-modified catalysts
3.1.1 NO oxidation comparison and CO, C3H6oxidation performances of the catalysts
3.1.2 Mutual influences between CO, C3H6and NO, NO2
3.2 Characterizations of the catalysts
3.2.1 Structural characterization of the catalysts
3.2.2 CO-chemisorption
3.2.3 Redox properties
3.2.4 Morphology and metal particle size of catalysts
4 Conclusions
本文編號：3521156
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