Effects of reduction temperature and content of Pd loading on the performance Pd/CeO_2 catalyst for CO oxidation

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英文篇名：Effects of reduction temperature and content of Pd loading on the performance Pd/CeO_2 catalyst for CO oxidation 作者：Yue ; Yan ; Huaxi ; Li ; Zhanghui ; Lu ; Xuewen ; Wang ; Rongbin ; Zhang ; Gang ; Feng 英文作者：Yue Yan;Huaxi Li;Zhanghui Lu;Xuewen Wang;Rongbin Zhang;Gang Feng;Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry, Nanchang University;College of Chemistry and Chemical Engineering, Jiangxi Normal University; 英文关键词：CO oxidation;;Palladium catalyst;;Ceria nanotubes;;Reduction temperature;;Palladium content 中文刊名：FXKB 英文刊名：中国化学快报(英文版) 机构：Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry, Nanchang University;College of Chemistry and Chemical Engineering, Jiangxi Normal University; 出版日期：2019-06-15 出版单位：Chinese Chemical Letters 年：2019 期：v.30 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) 语种：英文; 页：FXKB201906006 页数：4 CN：06 ISSN：11-2710/O6 分类号：37-40

摘要

The content of noble metal loading and the reduction process of the catalysts are important factors influence the economic indicator and catalytic perfo rmance for industrial catalysis.In the present work,Pd/CeO_2 NT(Pd supported on the CeO_2 nanotubes)catalysts are prepared with the hydrothermal synthesized CeO_2 NT and glutathione(GSH)reduced Pd nanoparticles via imp regnation.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/CeO2 NT.The catalysts reduced at 350 ℃ for 2 h prior to catalytic reaction perform the best toward CO oxidation,which reaches completely CO conversion at70℃.The XRD,Raman,H_2-TPR,TEM,BET and XPS characterization reveal that the excellent catalytic perfo rmance of 350 ℃ 1.5%Pd/CeO_2 NT sample can be attributed the high Pd~0 species and oxygen vaca ncy in the sample,which are important factors influence the activity of the catalysts.
        The content of noble metal loading and the reduction process of the catalysts are important factors influence the economic indicator and catalytic perfo rmance for industrial catalysis.In the present work,Pd/CeO_2 NT(Pd supported on the CeO_2 nanotubes)catalysts are prepared with the hydrothermal synthesized CeO_2 NT and glutathione(GSH)reduced Pd nanoparticles via imp regnation.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/CeO2 NT.The catalysts reduced at 350 ℃ for 2 h prior to catalytic reaction perform the best toward CO oxidation,which reaches completely CO conversion at70℃.The XRD,Raman,H_2-TPR,TEM,BET and XPS characterization reveal that the excellent catalytic perfo rmance of 350 ℃ 1.5%Pd/CeO_2 NT sample can be attributed the high Pd~0 species and oxygen vaca ncy in the sample,which are important factors influence the activity of the catalysts.

引文

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