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Influence of calcination and pretreatment conditions on the activity of Co3O4 for CO oxidation
Yu, YB; Zhao, JJ; Han, X; Zhang, Y; Qin, XB; Wang, BY; Qin XB(秦秀波); Wang BY(王宝义)
2013
发表期刊CHINESE JOURNAL OF CATALYSIS
卷号34期号:2页码:283-293
通讯作者[Yu Yunbo ; Zhao Jiaojiao ; Han Xue ; Zhang Yan] Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China ; [Qin Xiubo ; Wang Baoyi] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
文章类型Article
摘要The influence of calcination and pretreatment conditions on the structure of Co3O4 and its activity for CO oxidation were studied. TG analysis indicated that the precursor of Co3O4 prepared by a precipitation method was present in the form of cobalt hydroxide carbonate, calcination of which within the temperature range of 150-400 degrees C in air resulted in the formation of cubic phase Co3O4. N-2 adsorption-desorption, powder X-ray diffraction, transmission electron microscopy, and activity test results showed that the prepared Co3O4 samples were comprised of nanoparticles, with the specific surface area and size distribution closely related to the calcination temperature. Over these samples, a size dependence of the catalytic activity for CO oxidation was clearly observed. As identified by positron annihilation lifetime spectrum, low temperature oxygen temperature-programmed desorption, and durability testing for CO oxidation, pretreatment of Co3O4 in N-2 within the temperature range 150-250 degrees C favors the formation of surface oxygen vacancy clusters, the occurrence of which would be beneficial for the adsorption and activation of O-2, and also for the catalytic oxidation of CO. Meanwhile, the reconstruction of oxygen vacancies on the surface of Co3O4, induced by the pretreatment process, was also discussed. (C) 2013, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
关键词Tricobalt tetraoxide Calcination Pretreatment Oxygen vacancy Carbon monoxide oxidation
学科领域Chemistry; Engineering
研究领域[WOS]Chemistry ; Engineering ; Chemistry ; Engineering
DOI10.1016/S1872-2067(11)60484-1
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语种英语
研究领域[WOS]Chemistry ; Engineering ; Chemistry ; Engineering
WOS类目Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
WOS记录号WOS:000315558800001
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被引频次:9[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/236869
专题多学科研究中心
作者单位中国科学院高能物理研究所
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Yu, YB,Zhao, JJ,Han, X,et al. Influence of calcination and pretreatment conditions on the activity of Co3O4 for CO oxidation[J]. CHINESE JOURNAL OF CATALYSIS,2013,34(2):283-293.
APA Yu, YB.,Zhao, JJ.,Han, X.,Zhang, Y.,Qin, XB.,...&王宝义.(2013).Influence of calcination and pretreatment conditions on the activity of Co3O4 for CO oxidation.CHINESE JOURNAL OF CATALYSIS,34(2),283-293.
MLA Yu, YB,et al."Influence of calcination and pretreatment conditions on the activity of Co3O4 for CO oxidation".CHINESE JOURNAL OF CATALYSIS 34.2(2013):283-293.
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