Relationship between oxygen species and activity/stability in heteroatom (Zr, Y)-doped cerium-based catalysts for catalytic decomposition of CH3SH

被引:13
作者
Chen, Dingkai [1 ]
Zhang, Dehua [1 ]
He, Dedong [1 ,2 ]
Lu, Jichang [1 ]
Zhong, Liping [1 ]
Han, Caiyun [1 ]
Luo, Yongming [1 ]
机构
[1] Kunming Univ Sci & Technol, Fac Environm Sci & Engn, Kunming 650500, Yunnan, Peoples R China
[2] Kunming Univ Sci & Technol, Fac Chem Engn, Kunming 650500, Yunnan, Peoples R China
基金
中国国家自然科学基金;
关键词
Cerium-base catalyst; Heteroatom; Surface lattice oxygen; CH3SH decomposition; Bulk oxygen migration; CEO2-ZRO2 MIXED OXIDES; SOLID ACID CATALYSTS; METHYL MERCAPTAN; ACTIVATED CARBON; CO OXIDATION; DOPED CEO2; STRUCTURAL-CHARACTERIZATION; SOOT OXIDATION; NATURAL-GAS; REMOVAL;
D O I
10.1016/S1872-2067(18)63146-8
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
CeO2, Ce1-xZrxO2, and Ce1-xYxO2-delta(x = 0.25, 0.50, 0.75, and 1.00) have been rapidly synthesized to estimate their catalytic behavior in decomposing CH3SH. The role of oxygen vacancies, and the relationship between the oxygen species and catalytic properties of CeO2 and Zr-doped and Y-doped ceria-based materials are investigated in detail. Combining the observed catalytic performance with the characterization results, it can be deemed that surface lattice oxygen plays a critical role in methanethiol catalytic conversion over cerium oxides. Ce(0.75)Zr(0.25)O(2)shows higher catalytic activity for CH3SH decomposition due to the large amount of surface lattice oxygen, readily available oxygen species, and excellent redox properties. Ce0.75Y0.25O2-delta displays better catalytic stability owing to the greater number of oxygen vacancies that would promote bulk lattice oxygen migration to the surface of the catalyst in order to replenish surface lattice oxygen. In addition, the results show that the difference in chemical valence between Ce and the heteroatoms would strongly influence the amount of surface lattice oxygen as well as the mobility of bulk -phase oxygen in these catalysts, thus affecting their activity and stability. (C) 2018, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:1929 / 1941
页数:13
相关论文
共 58 条
  • [1] Improvement of oxygen storage capacity using mesoporous ceria-zirconia solid solutions
    Abdollahzadeh-Ghom, Sara
    Zamani, Cyrus
    Andreu, Teresa
    Epifani, Mauro
    Morante, J. R.
    [J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2011, 108 (1-2) : 32 - 38
  • [2] Sulfide removal in petroleum refinery wastewater by chemical precipitation
    Altas, Levent
    Buyukgungor, Hanife
    [J]. JOURNAL OF HAZARDOUS MATERIALS, 2008, 153 (1-2) : 462 - 469
  • [3] Potential of Ceria-Based Catalysts for the Oxidation of Landfill Leachate by Heterogeneous Fenton Process
    Aneggi, E.
    Cabbai, V.
    Trovarelli, A.
    Goi, D.
    [J]. INTERNATIONAL JOURNAL OF PHOTOENERGY, 2012, 2012
  • [4] Combined removal of diesel soot particulates and NOx over CeO2-ZrO2 mixed oxides
    Atribak, I.
    Bueno-Lopez, A.
    Garcia-Garcia, A.
    [J]. JOURNAL OF CATALYSIS, 2008, 259 (01) : 123 - 132
  • [5] Oxidative adsorption of methyl mercaptan on nitrogen-enriched bituminous coal-based activated carbon
    Bagreev, A
    Menendez, JA
    Dukhno, I
    Tarasenko, Y
    Bandosz, TJ
    [J]. CARBON, 2005, 43 (01) : 208 - 210
  • [6] Catalytic properties of activated carbon surface in the process of adsorption/oxidation of methyl mercaptan
    Bashkova, S
    Bagreev, A
    Bandosz, TJ
    [J]. CATALYSIS TODAY, 2005, 99 (3-4) : 323 - 328
  • [7] The adsorption feature and photocatalytic oxidation activity of K1-2xMxTiNbO5 (M = Mn, Ni) for methyl mercaptan in methane
    Cai, Weimeng
    Lu, Guohui
    He, Jie
    Lan, Yunxiang
    [J]. CERAMICS INTERNATIONAL, 2012, 38 (04) : 3167 - 3174
  • [8] Chemistry - Oxygen vacancies and catalysis on ceria surfaces
    Campbell, CT
    Peden, CHF
    [J]. SCIENCE, 2005, 309 (5735) : 713 - 714
  • [9] Investigation of the role of surface lattice oxygen and bulk lattice oxygen migration of cerium-based oxygen carriers: XPS and designed H2-TPR characterization
    Chen, Dingkai
    He, Dedong
    Lu, Jichang
    Zhong, Liping
    Liu, Feng
    Liu, Jiangping
    Yu, Jie
    Wan, Gengping
    He, Sufang
    Luo, Yongming
    [J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2017, 218 : 249 - 259
  • [10] The oxidation of aqueous thiols on a graphite intercalation compound adsorbent
    Conti-Ramsden, Michael G.
    Nkrumah-Amoako, K.
    Brown, Nigel W.
    Roberts, Edward P. L.
    [J]. ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY, 2013, 19 (05): : 989 - 996