Characteristics of Pt/WO3/CeO2/ZrO2 Catalysts for catalytic reduction of NO by CO

被引：58
|
作者：
Zhu, Hai-ou [1 ]
Kim, Jeong-Rang [1 ]
Ihm, Son-Ki [1 ]
机构：
[1] Korea Adv Inst Sci & Technol, Dept Chem & Biomol Engn, Taejon 305701, South Korea
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2009年 / 86卷 / 1-2期
关键词：
Pt; CeO2; ZrO2; CeO2-ZrO2; Precipitation; WO3; NO plus CO reaction; Excess oxygen; Acidity; Pt dispersion; OXYGEN STORAGE CAPACITY; CEO2-ZRO2 MIXED OXIDES; SELECTIVE REDUCTION; TUNGSTATED ZIRCONIA; BEHAVIOR; PD; METHANE; RH; SUPPORTS; SCR;
D O I：
10.1016/j.apcatb.2008.07.024
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Various supported Pt catalysts (Pt/WO3/CeO2/ZrO2; Pt/ZrO2, Pt/CeO2, Pt/CeZrO, Pt/WO3/ZrO2, and Pt/WO3/CeZrO) were prepared and characterized, and their characteristics of catalytic reductions of NO by CO with or without oxygen were investigated. TPR and CO-TPD showed that Pt/CeO2 and Pt/CeZrO could be easily reduced by CO while the reduction by CO was inhibited with the introduction of WO3 in the Case Of Pt/WO3/CeZrO. According to NO-TPD, NO reduction could not proceed over the catalysts (Pt/WO3/CeZrO, Pt/ZrO2, Pt/WO3/ZrO2) to remain in an oxidized state even after reduction by CO, but NO reduction was possible over Pt/CeO2 and Pt/CeZrO catalysts when reduced by CO. For NO + CO reaction without oxygen, those easily reducible catalysts (Pt/CeO2 and Pt/CeZrO) exhibited better catalytic performances. With excess oxygen, however, Pt/WO3/CeZrO and Pt/WO3/ZrO2 catalysts exhibited higher NO conversions to N-2 and N2O especially at a low temperature. The acidity from ZrO2 and WO3 in Pt/WO3/CeO2/ZrO2 catalysts should play an important role on their NO conversion only in the presence of excess oxygen. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：87 / 92
页数：6
相关论文
共 50 条
  • [21] Features of the phase composition, acidity, and isomerization activity of Pt/WO3/ZrO2 catalysts
    M. D. Smolikov
    V. A. Shkurenok
    O. V. Dzhikiya
    D. I. Kir’yanov
    E. V. Zatolokina
    A. S. Belyi
    Russian Chemical Bulletin, 2020, 69 : 1714 - 1718
  • [22] Preparing and studying Pt/WO3/ZrO2 catalysts for the isomerization of n-heptane
    Smolikov M.D.
    Shkurenok V.A.
    Yablokova S.S.
    Kir’yanov D.I.
    Paukshtis E.A.
    Leont’eva N.N.
    Belyi A.S.
    Drozdov V.A.
    Smolikov, M.D. (smolikov@ihcp.ru), 1600, Maik Nauka Publishing / Springer SBM (09): : 54 - 61
  • [23] Effect of WO3 content on the catalytic activity of CeO2-ZrO2-WO3 for selective catalytic reduction of NO with NH3
    Song, Zhong-Xian
    Zhang, Qiu-Lin
    Zhang, Jin-Hui
    Ning, Ping
    Li, Hao
    Wang, Yan-Cai
    Wang, Ming-Zhi
    Duan, Yan-Kang
    Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology, 2015, 43 (06): : 701 - 707
  • [24] Study on the synergistic effect of CeO2 and WO3 on the catalytic performance of CeO2-WO3 for the selective catalytic reduction of NOx by NH3
    Song, Zhong-Xian
    Du, Hui-Xian
    Zhao, Bao-Lin
    Liu, Xue-Ping
    Kang, Hai-Yan
    Liu, Biao
    Mao, Yan-Li
    Fu, Yong-Mei
    Liu, Pan
    Guo, Yi-Fei
    Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology, 2019, 47 (09): : 1129 - 1136
  • [25] SELECTIVE CARBON MONOXIDE OXIDATION IN H2-RICH GAS STREAM OVER Co3O4/CeO2/ZrO2, Ag/CeO2/ZrO2, AND MnO2/CeO2/ZrO2 CATALYSTS
    Derekaya, Filiz Balikci
    Akinbingol, H. Baran
    CHEMICAL ENGINEERING COMMUNICATIONS, 2014, 201 (06) : 737 - 750
  • [26] Effect of CeO2 promotion on the catalytic performance of Co/ZrO2 catalysts for Fischer-Tropsch synthesis
    Zhang, Xiaohong
    Su, Haiquan
    Zhang, Yulong
    Gu, Xiaojun
    FUEL, 2016, 184 : 162 - 168
  • [27] Conversion of Glycerol to Acrolein in the Presence of WO3/ZrO2 Catalysts
    Arda Ulgen
    Wolfgang Hoelderich
    Catalysis Letters, 2009, 131 : 122 - 128
  • [28] Influence of benzene on isomerization of n-hexane over Pt/Ga2O3/WO3/ZrO2 and Pd/Al2O3/WO3/ZrO2 catalysts
    Tian, Wei
    Qin, Li-Zhen
    Chen, Chang-Lin
    Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology, 2008, 36 (03): : 311 - 315
  • [29] WO3/ZrO2 catalysts by sol-gel processing
    Signoretto, M.
    Scarpa, M.
    Pinna, F.
    Strukul, G.
    Canton, P.
    Benedetti, A.
    Journal of Non-Crystalline Solids, 225 : 178 - 183
  • [30] Conversion of Glycerol to Acrolein in the Presence of WO3/ZrO2 Catalysts
    Ulgen, Arda
    Hoelderich, Wolfgang
    CATALYSIS LETTERS, 2009, 131 (1-2) : 122 - 128
12345