CeO_2修饰八面体α-Mn_2O_3催化柴油机碳烟消除

详细信息    查看全文 | 推荐本文 |

英文篇名：CeO_2 Modified Octahedron α-Mn_2O_3 Catalysts for Diesel Soot Removal 作者：廖黎妮 ; 唐伟婷 ; 杨景云 ; 戴玉桃 ; 纪飞 ; 仇真 ; 徐睿 ; 门勇 英文作者：LIAO Lini;TANG Weiting;YANG Jingyun;DAI yutao;JI fei;QIU Zhen;XU Rui;MEN Yong;School of Chemistry and Chemical Engineering, Shanghai University of Engineering Science; 关键词：CeO_2/α-Mn_2O_3催化剂 ; 形貌效应 ; 碳烟消除 英文关键词：CeO_2/α-Mn_2O_3 catalyst;;morphology effect;;soot removal 中文刊名：SGCJ 英文刊名：Journal of Shanghai University of Engineering Science 机构：上海工程技术大学化学化工学院; 出版日期：2019-03-30 出版单位：上海工程技术大学学报 年：2019 期：v.33 语种：中文; 页：SGCJ201901003 页数：6 CN：01 ISSN：31-1598/T 分类号：19-24

摘要

采用等体积浸渍法以不同负载量的二氧化铈(CeO_2)修饰八面体α-Mn_2O_3,制备出CeO_2/α-Mn_2O_3复合金属氧化物催化剂.利用X线衍射(XRD)、场发射扫描电子显微镜(FESEM)、氮气吸附脱附对其进行结构及物化性质进行表征,利用程序升温氧化反应对其活性进行评价,研究CeO_2负载量对八面体α-Mn_2O_3催化柴油机碳烟消除的影响.结果表明,负载量为6%CeO_2的催化剂展示了最佳的催化碳烟燃烧活性.
        The CeO_2/α-Mn_2O_3 composite metal oxide catalyst was prepared by equal volume impregnation method in which octahedral α-Mn_2O_3 was modified by cerium oxide(CeO_2) with different mass percentages. X-ray diffraction(XRD),field emission scanning electron microscopy(FESEM),N_2 adsorption-desorption isotherms were used to characterize the catalyst,and temperature programmed oxidation(TPO) was used to evaluate the activity of catalyst. The influence of CeO_2 loading over octahedron α-Mn_2O_3 on the diesel soot combustion was studied. The results show that the catalyst loaded 6% of CeO_2 exhibited the best performance of soot combustion.

引文

[1] CHENG L,MEN Y,WANG J,et al.Crystal facet-dependent reactivity of α-Mn2O3,microcrystalline catalyst for soot combustion[J].Applied Catalysis B:Environmental,2017,204:374-384.
    [2] RICO-PéREZ V,ANEGGI E,BUENO-LóPEZ A,et al.Synergic effect of Cu/Ce0.5Pr0.5O2-δ and Ce0.5Pr0.5O2-δ in soot combustion[J].Applied Catalysis B:Environmental,2016,197:95-104.
    [3] OI-UCHISAWA J,OBUCHI A,ENOMOTO R,et al.Oxidation of carbon black over various Pt/MOx/SiC catalysts[J].Applied Catalysis B:Environmental,2001,32(4):257-268.
    [4] 欧阳杰宏,林俊敏,刘有发,等.用于碳烟燃烧的Cu0.05Ce0.95O催化剂活性氧物种的研究:等离子体的强化效应[J].中国环境科学,2013,33(2):243-250.
    [5] HONG S S,LEE G D.Catalytic removal of diesel soot particulates over LaMnO3 perovskite-type oxides[J].Studies in Surface Science and Catalysis,2006,159:261-264.
    [6] BUENO-LóPEZ A.Diesel soot combustion ceria catalysts[J].Applied Catalysis B:Environmental,2014,146:1-11.
    [7] NERI G,BONACCORSI L,DONATO A,et al.Catalytic combustion of diesel soot over metal oxide catalysts[J].Applied Catalysis B:Environmental,1997,11(2):217-231.
    [8] SHI Z M,LIU Y,YANG W Y,et al.Evaluation of cordierite-ceria composite ceramic with oxygen storage capacity[J].Journal of the European Ceramic Society,2002,22(8):1251-1256.
    [9] ANEGGI E,BOARO M,LEITENBURG C D,et al.Insights into the redox properties of ceria-based oxides and their implications in catalysis[J].Journal of Alloys and Compounds,2006,408-412:1096-1102.
    [10] DUTTA G,WAGHMARE U V,BAIDYA T,et al.Origin of enhanced reducibility/oxygen storage capacity of Ce1-xTixO2 compared to CeO2 or TiO2[J].Chenistry of Materials,2006,18(14):3249-3256.
    [11] MAMONTOV E,EGAMI T,BREZNY R,et al.Lattice defects and oxygen storage capacity of nanocrystalline ceria and ceria-zirconia[J].Journal of Physical Chemistry B,2000,104(47):11110-11116.
    [12] 王磊,曹春梅,刑令利,等.锰铈相互作用对催化碳烟燃烧性能的影响[J].化学工业与工程,2018,35(4):32-45.
    [13] WU X F,LIN F,XU H B,et al.Effects of absorbed and gaseous NOx species on catalytic oxidation of diesel soot with MnOx-CeO2 mixed oxides[J].Applied Catalysis B:Environmental,2010,96(1):101-109.