Acid pretreatment effect on the physicochemical property and catalytic performance of CeO2 for NH3-SCR | |
Yao, Xiaojiang1,2,3![]() ![]() | |
刊名 | APPLIED CATALYSIS A-GENERAL
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2017-07-25 | |
卷号 | 542页码:282-288 |
关键词 | Acid Pretreatment Ceo2 Surface Acidity Reduction Property Nh3-scr Reaction |
ISSN号 | 0926-860X |
DOI | 10.1016/j.apcata.2017.06.003 |
英文摘要 | A series of CeO2 pretreated with different acids (i.e., CH3COOH (HAc), HNO3, HCl, H3PO4, and H2SO4) were prepared with the purpose of exploring the influence of acid pretreatment on the physicochemical property and catalytic performance of CeO2 for NH3-SCR. And then, these catalysts were characterized by means of XRD, Raman, N-2-physisorption, H-2-TPR, NH3-TPD, in situ DRIFTS, XPS, and NH3-SCR reaction. The obtained results indicate that different acids pretreatment has different influence on the structure, texture, reduction behavior, surface acidity, surface property, and catalytic performance of CeO2. Especially, the sample pretreated by H2SO4 (Le., CeO2-S catalyst) exhibits the best catalytic performance for NH3-SCR reaction at high temperature among these catalysts due to the largest amount of surface acid sites (especially B acid sites) and Ce3+, as well as the increase of defect sites (such as oxygen vacancy) and the most abundant reducible species. Furthermore, CeO2-S catalyst also exhibits excellent catalytic performance (Le., above 80% NO conversion) during the whole test of H2O + SO2 resistance, which indicates that it has the potential to be applied in the practical denitration process. |
资助项目 | National Natural Science Foundation of China[21507130] ; Chongqing Science & Technology Commission[cstc2016jcyjA0070] ; Chongqing Science & Technology Commission[cstc2014pt-gc20002] ; Chongqing Science & Technology Commission[cstc2014yykfC20003] ; Chongqing Science & Technology Commission[cstckjcxljrc13] ; Open Project Program of Chongqing Key Laboratory of Catalysis and Functional Organic Molecules from Chongqing Technology and Business University[1456029] |
WOS研究方向 | Chemistry ; Environmental Sciences & Ecology |
语种 | 英语 |
出版者 | ELSEVIER SCIENCE BV |
WOS记录号 | WOS:000405765200025 |
内容类型 | 期刊论文 |
源URL | [http://172.16.51.4:88/handle/2HOD01W0/184] ![]() |
专题 | 大气环境研究中心 |
作者单位 | 1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Res Ctr Atmospher Environm, Chongqing 400714, Peoples R China 2.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Peoples R China 3.Yangtze Normal Univ, Collaborat Innovat Ctr Green Dev Wuling Mt Areas, Chongqing 408100, Peoples R China 4.Nanjing Univ, Sch Chem & Chem Engn, Key Lab Mesoscop Chem MOE, Nanjing 210093, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Yao, Xiaojiang,Wang, Zhu,Yu, Shuohan,et al. Acid pretreatment effect on the physicochemical property and catalytic performance of CeO2 for NH3-SCR[J]. APPLIED CATALYSIS A-GENERAL,2017,542:282-288. |
APA | Yao, Xiaojiang,Wang, Zhu,Yu, Shuohan,Yang, Fumo,&Dong, Lin.(2017).Acid pretreatment effect on the physicochemical property and catalytic performance of CeO2 for NH3-SCR.APPLIED CATALYSIS A-GENERAL,542,282-288. |
MLA | Yao, Xiaojiang,et al."Acid pretreatment effect on the physicochemical property and catalytic performance of CeO2 for NH3-SCR".APPLIED CATALYSIS A-GENERAL 542(2017):282-288. |
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