Enhanced Activity and Water Resistance on CuO/SiO2-TiO2 Catalyst for CO Oxidation and NO Reduction by CO: The Promotion Effect of SiO2

被引:0
作者
Xie, Shaohua [1 ]
Loukusa, Jeremia [1 ]
Ye, Kailong [1 ]
Zhang, Xing [1 ]
Poly, Sharmin [1 ]
Liu, Fudong [1 ,2 ]
机构
[1] Univ Cent Florida, Nanosci Technol Ctr NSTC, Dept Civil Environm & Construct Engn, Catalysis Cluster Renewable Energy & Chem Transfor, Orlando, FL 32816 USA
[2] Univ Calif Riverside, Dept Chem & Environm Engn, Riverside, CA 92521 USA
关键词
CuO catalyst; SiO2-TiO2; support; SiO2 promotion effect; CO oxidation; Water resistance; MIXED-OXIDE; NANOCATALYSTS; SITES; PERFORMANCE; ACTIVATION; EFFICIENT; CERIA; TIO2;
D O I
10.1007/s11244-024-01917-9
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Non-precious metal catalysts with enhanced low-temperature activity and improved water resistance are highly demanded for emission control. CuO-based catalysts are promising alternatives to precious metal catalysts due to their acceptable activity and cost-effectiveness. However, there is an urgent need to further enhance their low-temperature activity and water resistance for industrial applications. Herein, CuO catalysts supported by various SiO2-TiO2 supports were prepared and evaluated for CO oxidation and NO reduction by CO reactions under the testing conditions with and without water. Among the studied catalysts with different SiO2 contents, CuO/5SiO2-TiO2, in which CuO was supported by SiO2-TiO2 with 5 wt.% SiO2, exhibited the best performance for CO oxidation. Compared with CuO/TiO2 and CuO/SiO2 reference catalysts, the CuO/5SiO2-TiO2 catalyst showed enhanced catalytic activity in both CO oxidation and NO reduction by CO under dry and wet conditions. Comprehensive characterizations revealed that the presence of SiO2 in TiO2 support facilitated the CuO/5SiO2-TiO2 catalyst with a high dispersion and reduced oxidation states of CuOx species. This not only improved the low-temperature reducibility but also enhanced the adsorption of reactive CO species. As a result, the CuO/5SiO2-TiO2 catalyst demonstrated superior catalytic activity. Furthermore, the inclusion of SiO2 in the catalyst inhibited H2O adsorption, contributing to the enhanced water resistance on CuO/5SiO2-TiO2 catalyst. These advantages in catalytic activity and water resistance make CuO/5SiO2-TiO2 a promising candidate for applications in emission control.
引用
收藏
页码:922 / 933
页数:12
相关论文
共 40 条
  • [1] Stabilization of Catalytically Active Cu plus Surface Sites on TitaniumCopper Mixed-Oxide Films**
    Baber, Ashleigh E.
    Yang, Xiaofang
    Kim, Hyun You
    Mudiyanselage, Kumudu
    Soldemo, Markus
    Weissenrieder, Jonas
    Senanayake, Sanjaya D.
    Al-Mahboob, Abdullah
    Sadowski, Jerzy T.
    Evans, Jaime
    Rodriguez, Jose A.
    Liu, Ping
    Hoffmann, Friedrich M.
    Chen, Jingguang G.
    Stacchiola, Dario J.
    [J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2014, 53 (21) : 5336 - 5340
  • [2] Emission of NH3 and N2O during NO reduction over commercial aged three-way catalyst (TWC): Role of individual reductants in simulated exhausts
    Bin Bae, Wo
    Kim, Do Yeong
    Byun, Sang Woo
    Hazlett, Melanie
    Yoon, Dal Young
    Jung, Changho
    Kim, Chang Hwan
    Kang, Sung Bong
    [J]. CHEMICAL ENGINEERING JOURNAL ADVANCES, 2022, 9
  • [3] NITRIC-OXIDE REDUCTION BY CO ON CU TIO2 CATALYSTS
    BOCCUZZI, F
    GUGLIELMINOTTI, E
    MARTRA, G
    CERRATO, G
    [J]. JOURNAL OF CATALYSIS, 1994, 146 (02) : 449 - 459
  • [4] Effect of Ti3+ on TiO2-Supported Cu Catalysts Used for CO Oxidation
    Chen, Ching S.
    Chen, Tse C.
    Chen, Chen C.
    Lai, Yuan T.
    You, Jiann H.
    Chou, Te M.
    Chen, Ching H.
    Lee, Jyh-Fu
    [J]. LANGMUIR, 2012, 28 (26) : 9996 - 10006
  • [5] Effect of highly dispersed active sites of Cu/TiO2 catalyst on CO oxidation
    Chen, Ching-Shiun
    You, Jiann-Hwa
    Lin, Jarrn-Horng
    Chen, Yu-Yuan
    [J]. CATALYSIS COMMUNICATIONS, 2008, 9 (14) : 2381 - 2385
  • [6] Low-temperature CO oxidation at persistent low-valent Cu nanoparticles on TiO2 aerogels
    DeSario, Paul A.
    Pitman, Catherine L.
    Delia, Daniel J.
    Driscoll, Darren M.
    Maynes, Andrew J.
    Morris, John R.
    Pennington, Ashley M.
    Brintlinger, Todd H.
    Rolison, Debra R.
    Pietron, Jeremy J.
    [J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2019, 252 : 205 - 213
  • [7] Dual Activation of Molecular Oxygen and Surface Lattice Oxygen in Single Atom Cu1/TiO2 Catalyst for CO Oxidation
    Fang, Yarong
    Zhang, Qi
    Zhang, Huan
    Li, Xiaomin
    Chen, Wei
    Xu, Jue
    Shen, Huan
    Yang, Ji
    Pan, Chuanqi
    Zhu, Yuhua
    Wang, Jinlong
    Luo, Zhu
    Wang, Liming
    Bai, Xuedong
    Song, Fei
    Zhang, Lizhi
    Guo, Yanbing
    [J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2022, 61 (48)
  • [8] Elucidating the Nature of the Cu(I) Active Site in CuO/TiO2 for Excellent Low-Temperature CO Oxidation
    Fang, Yarong
    Chi, Xiao
    Li, Li
    Yang, Ji
    Liu, Shoujie
    Lu, Xingxu
    Xiao, Wen
    Wang, Liming
    Luo, Zhu
    Yang, Weiwei
    Hu, Siyu
    Xiong, Juxia
    Hoang, Son
    Deng, Hongtao
    Liu, Fudong
    Zhang, Lizhi
    Gao, Puxian
    Ding, Jun
    Guo, Yanbing
    [J]. ACS APPLIED MATERIALS & INTERFACES, 2020, 12 (06) : 7091 - 7101
  • [9] Nature of support plays vital roles in H2O promoted CO oxidation over Pt catalysts
    Hu, Yutao
    Liu, Xiaolong
    Zou, Yang
    Xie, Haijiao
    Zhu, Tingyu
    [J]. JOURNAL OF CATALYSIS, 2022, 416 : 364 - 374
  • [10] Effect of TiO2 crystalline phase on CO oxidation over CuO catalysts supported on TiO2
    Kang, Mi Yeong
    Yun, Hyeong Jin
    Yu, Sungju
    Kim, Wooyoung
    Kim, Nam Dong
    Yi, Jongheop
    [J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2013, 368 : 72 - 77