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In-situ fabrication of noble metal modified (Ce, Zr)O2-delta monolithic catalysts for CO oxidation

文献类型：期刊论文

作者Liu, Xiaoyuan1,3; Wang, Ke1,3; Zhou, Yang1,3; Tang, Xinyue1,3; Zhu, Xiuhui2; Zhang, Ruishi2; Zhang, Xinglai3; Jiang, Xin3; Liu, Baodan3
刊名APPLIED SURFACE SCIENCE
出版日期2019-07-31
卷号483页码:721-729
关键词CeO2-ZrO2 solid solution Plasma electrolytic oxidation In-situ growth Monolithic catalysts Noble metal modification
ISSN号0169-4332
DOI10.1016/j.apsusc.2019.03.315
通讯作者Liu, Baodan(baodanliu@hotmail.com)
英文摘要The CeO2-ZrO2 solid solution ((Ce, Zr)O-2) has long been utilized in catalytic industry due to its enhanced oxygen storage/release capacity (OSC/ORC) and outstanding thermal stability. In this study, (Ce, Zr)O2-delta monolithic catalysts are successfully in-situ fabricated on flexible titanium mesh through traditional plasma electrolytic oxidation (PEO) method. The surface Ce, Zr atomic percentages (at.%) of the as-prepared catalysts can be widely tailored through the change of the mass ratio of Ce-2(SO4)(3) and Zr(SO4)(2) in the initial electrolyte during PEO process. XRD test in accompany with Raman study reveals the existence of cubic CeO2, stable/metastable tetragonal phases (t, t' phases) and Ce, Zr containing amorphous phase in the catalysts. XPS analysis shows the nonstoichiometric feature of the as-prepared monolithic catalysts while the TEM characterization indicates the nanocrystalline nature of the (Ce, Zr)O2-delta catalysts. After noble metal (Au, PdO) modification, the monolithic catalysts show remarkable CO oxidation activities. The PdO/Ce75Zr25 sample shows the best catalytic activity with a lowest CO oxidation temperature of 135 degrees C. This study establishes an efficient in-situ fabrication strategy toward the preparation of CeO2-ZrO2 solid solution on flexible valve metal substrates with good substrate adherence, which is advantageous and promising for the direct integration of various oxide catalysts toward CO oxidation, TWCs, SCR, etc.
资助项目National Natural Science Foundation of China[51702326] ; National Natural Science Foundation of China[51872296] ; Youth Innovation Promotion Association, Chinese Academy of Sciences[Y4NC711171] ; Basic Science Innovation Program of Shenyang National Laboratory for Materials Science[2017RP25]
WOS研究方向Chemistry ; Materials Science ; Physics
语种英语
WOS记录号WOS:000471105000080
出版者ELSEVIER SCIENCE BV
资助机构National Natural Science Foundation of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Basic Science Innovation Program of Shenyang National Laboratory for Materials Science
源URL[http://ir.imr.ac.cn/handle/321006/133877]  
专题金属研究所_中国科学院金属研究所
通讯作者Liu, Baodan
作者单位1.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
2.Yingkou Univ Technol, Dept Chem & Environm Engn, Yingkou 115014, Peoples R China
3.Chinese Acad Sci, IMR, Shenyang Natl Lab Mat Sci SYNL, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Xiaoyuan,Wang, Ke,Zhou, Yang,et al. In-situ fabrication of noble metal modified (Ce, Zr)O2-delta monolithic catalysts for CO oxidation[J]. APPLIED SURFACE SCIENCE,2019,483:721-729.
APA Liu, Xiaoyuan.,Wang, Ke.,Zhou, Yang.,Tang, Xinyue.,Zhu, Xiuhui.,...&Liu, Baodan.(2019).In-situ fabrication of noble metal modified (Ce, Zr)O2-delta monolithic catalysts for CO oxidation.APPLIED SURFACE SCIENCE,483,721-729.
MLA Liu, Xiaoyuan,et al."In-situ fabrication of noble metal modified (Ce, Zr)O2-delta monolithic catalysts for CO oxidation".APPLIED SURFACE SCIENCE 483(2019):721-729.

入库方式： OAI收割

来源：金属研究所

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