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Effects of reduction temperature and content of Pd loading on the performance Pd/CeO2 catalyst for CO oxidation

查看全文 作　　者：Yue [1]Yan;Huaxi [1]Li;Zhanghui [2]Lu;Xuewen [1]Wang;Rongbin [1]Zhang;Gang [1]Feng 高影响力作者 机构地区：[1]Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry, Nanchang University, Nanchang 330031, China;[2]College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China高影响力机构 出　　处：《Chinese Chemical Letters》索引2019年第30卷第6期,共4页高影响力期刊 基　　金：the National Natural Science Foundation of China(Nos. 21868016, 21366020 and 21875096); Natural Science Foundation of Jiangxi Province (Nos. 20181BAB203016,20122BAB203009);the Key Laboratory of Jiangxi Province for Environment and Energy Catalysis of Jiangxi Province (No. 20181BCD40004) 摘　　要：The content of noble metal loading and the reduction process of the catalysts are important factors influence the economic indicator and catalytic performance for industrial catalysis. In the present work, Pd/CeO2NT (Pd supported on the CeO2 nanotubes) catalysts are prepared with the hydrothermal synthesized CeO2NT and glutathione (GSH) reduced Pd nanoparticles via impregnation. The content of Pd loading as well as the catalysts reduction temperature are optimized to the CO oxidation reduction. Our results show that the best Pd loading is 1.5%Pd/CeO2NT. The catalysts reduced at 350 ℃ for 2 h prior to catalytic reaction perform the best toward CO oxidation, which reaches completely CO conversion at 70 ℃. The XRD, Raman, H2-TPR, TEM, BET and XPS characterization reveal that the excellent catalytic performance of 350 °C 1.5%Pd/CeO2NT sample can be attributed the high Pd^0 species and oxygen vacancy in the sample, which are important factors influence the activity of the catalysts. 关 键 词：CO OXIDATION PALLADIUM CATALYST CERIA NANOTUBES Reduction temperature PALLADIUM content
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