Selective oxidation of CO in excess H2 over Ru/Al2O3 catalysts modified with metal oxide

被引：26
作者：
Chen, Xirong [1 ]
Zou, Hanbo [2 ]
Chen, Shengzhou [2 ]
Dong, Xinfa [1 ]
Lin, Weiming [1 ,2 ]
机构：
[1] S China Univ Technol, Sch Chem & Energy Engn, Guangzhou 510641, Guangdong, Peoples R China
[2] Guangzhou Univ, Sch Chem & Chem Engn, Guangzhou 510006, Guangdong, Peoples R China
来源：
JOURNAL OF NATURAL GAS CHEMISTRY | 2007年 / 16卷 / 04期
基金：
中国国家自然科学基金;
关键词：
hydrogen-rich gas; ruthenium based catalysts; CO removal; selective oxidation; metal oxide;
D O I：
10.1016/S1003-9953(08)60013-4
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The Ru/Al2O3 catalysts modified with metal oxide (K2O and La2O3) were prepared via incipient wetness impregnation method from RuCl3 center dot nH(2)O mixed with nitrate loading on Al2O3 support. The activity of catalysts was evaluated under simulative conditions for the preferential oxidation of CO (CO-PROX) from the hydrogen-rich gas streams produced by reforming gas, and the performances of catalysts were investigated by XRD and TPR. The results showed that the activity temperature of the modified catalysts Ru-K2O/Al2O3 and Ru-La2O3/Al2O3 were lowered approximately 30 degrees C compared with pure Ru/Al2O3, and the activity temperature range was widened. The conversion of CO on Ru-K2O/Al2O3 and Ru-La2O3/Al2O3 was above 99% at 140-160 degrees C, suitable to remove CO in a hydrogen-rich gas and the selectivity of Ru-La2O3/Al2O3 was higher than that of Ru-K2O/Al2O3 in the active temperature range. Slight methanation reaction was detected at 220 degrees C and above.
引用
收藏
页码：409 / 414
页数：6
相关论文
共 50 条
  • [21] Activity and selectivity of CO oxidation in H2 rich stream over the Ag/Co/Ce mixed oxide catalysts
    Derekaya, Filiz Balikci
    Guldur, Cigdem
    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2010, 35 (06) : 2247 - 2261
  • [22] Recent Advances in Preferential Oxidation of CO in H2 Over Gold Catalysts
    Lakshmanan, Pandian
    Park, Jung Eun
    Park, Eun Duck
    CATALYSIS SURVEYS FROM ASIA, 2014, 18 (2-3) : 75 - 88
  • [23] Mesoporous ceria-zirconia supported cobalt oxide catalysts for CO preferential oxidation reaction in excess H2
    Zhao, Zhongkui
    Jin, Ronghua
    Bao, Ting
    Lin, Xiaoli
    Wang, Guiru
    APPLIED CATALYSIS B-ENVIRONMENTAL, 2011, 110 : 154 - 163
  • [24] Formation of HCHO, CO and H2 by methane oxidation with O2 over Cu catalysts stabilized in silicoaluminophosphates
    Shimakawa, Mana
    Nagase, Rieko
    Kugo, Ryoya
    Ohyama, Junya
    Takenaka, Sakae
    CATALYSIS SCIENCE & TECHNOLOGY, 2025, 15 (06) : 1998 - 2007
  • [25] Formation of HCHO, CO and H2 by methane oxidation with O2 over Cu catalysts stabilized in silicoaluminophosphates
    Shimakawa, Mana
    Nagase, Rieko
    Kugo, Ryoya
    Ohyama, Junya
    Takenaka, Sakae
    CATALYSIS SCIENCE & TECHNOLOGY, 2025,
  • [26] An efficient Sn-modified Pd-Cu/Al2O3 catalyst for H2 purification through preferential oxidation of CO at low temperature
    Zhao, Wanjun
    Dang, Hui
    Yue, Lijun
    Wang, Yongzhao
    Wu, Ruifang
    Li, Haitao
    Zhao, Yongxiang
    FUEL, 2023, 354
  • [27] Monolithic stirrer reactor: The selective lactose oxidation in liquid phase over Au/Al2O3 nanostructured catalysts
    Regenhardt, S. A.
    Meyer, C. I.
    Sanz, O.
    Sebastian, V.
    Ivanova, S.
    Centeno, M. A.
    Odriozola, J. A.
    Montes, M.
    Marchi, A. J.
    Garetto, T. F.
    MOLECULAR CATALYSIS, 2020, 481
  • [28] Selective CO oxidation in the presence of H2 over Pt and Pt-Sn catalysts supported on niobia
    Marques, Priscila
    Ribeiro, Nielson F. P.
    Schmal, Martin
    Aranda, Donato A. G.
    Souza, Mariana M. V. M.
    JOURNAL OF POWER SOURCES, 2006, 158 (01) : 504 - 508
  • [29] Novel Pt-Fe/Al2O3 catalyst for CO selective oxidation
    Tang, XL
    Zhang, BC
    Li, Y
    Xin, Q
    Shen, WJ
    CHINESE JOURNAL OF CATALYSIS, 2005, 26 (01) : 1 - 3
  • [30] Kinetics of CO and H2 oxidation over CuO-CeO2 and CuO catalysts
    Avgouropoulos, George
    Ioannides, Theophilos
    CHEMICAL ENGINEERING JOURNAL, 2011, 176 : 14 - 21
12345