CeO 2 的添加对柴油车氧化催化剂Pt/SiO 2 -Al 2 O 3 的NO氧化性能提高的影响（英文）
发布时间：2021-11-26 23:43
采用分步浸渍法制备不同CeO2含量改性SiO2-Al2O3载体的Pt/SiO2-Al2O3柴油车氧化催化剂Pt/SiO2-Al2O3-wCeO2（质量分数w为0%,5%,10%,15%,30%）。利用固定床反应器,在模拟柴油车行驶条件下测定催化反应活性。活性结果表明,无论CO和C3H6存在与否,适量CeO2的添加均明显提高了Pt/SiO2-Al2O3柴油车氧化催化剂的NO氧化性能。其中,Pt/SiO2-Al2O3-15%CeO2表现出了最优氧化性能,其能在较宽温度范围内维持61%的NO2产率。CO-化学吸附结果表明,适量CeO2的添...
【文章来源】：物理化学学报. 2017,33(06)北大核心SCICSCD
【文章页数】：11 页
【文章目录】：
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
本文编号：3521156
【文章来源】：物理化学学报. 2017,33(06)北大核心SCICSCD
【文章页数】：11 页
【文章目录】：
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
本文编号：3521156
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