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
  • [31] Supported Ru catalysts prepared by two sonication-assisted methods for preferential oxidation of CO in H2
    Perkas, Nina
    Teo, Jaclyn
    Shen, Shoucang
    Wang, Zhan
    Highfield, James
    Zhong, Ziyi
    Gedanken, Aharon
    PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2011, 13 (34) : 15690 - 15698
  • [32] Catalysts for the preferential oxidation of Co in the H2 stream
    Kocemba, Ireneusz
    Pecyna, Iwona
    Rynkowski, Jacek M.
    PRZEMYSL CHEMICZNY, 2010, 89 (01): : 38 - 44
  • [33] CO Adsorption on Hydrated Ru/Al2O3: Influence of Pretreatment
    Gottschalk, Diana
    Hinson, Erin A.
    Baird, Adam S.
    Kitts, Hollins L.
    Layman, Kathryn A.
    JOURNAL OF PHYSICAL CHEMISTRY C, 2010, 114 (11) : 4950 - 4960
  • [34] Selective oxidation of ethane over a VOx/γ-Al2O3 catalyst -: investigation of the reaction network
    Klose, F
    Joshi, M
    Hamel, C
    Seidel-Morgenstern, A
    APPLIED CATALYSIS A-GENERAL, 2004, 260 (01) : 101 - 110
  • [35] NO reduction with CO in the presence and absence of H2O over Pd/γ-Al2O3 and Pd-VOx/γ-Al2O3 catalysts: The formation of HNCO, NH3 and stable surface species
    Neyertz, C.
    Volpe, M.
    Perez, D.
    Costilla, I.
    Sanchez, M.
    Gigola, C.
    APPLIED CATALYSIS A-GENERAL, 2009, 368 (1-2) : 146 - 157
  • [36] Selective oxidation of cyclohexane over the bi-functional catalysts Co-MO-TUD-1 (MO = Al2O3, CeO2, NiO, or ZnO)
    Hamdy, Mohamed S.
    Alhanash, Abdullah M.
    Eissa, Murad
    Ibrahim, Fatma A.
    Abboud, Mohamed
    JOURNAL OF POROUS MATERIALS, 2022, 29 (04) : 1287 - 1298
  • [37] Selective oxidation of cyclohexane over the bi-functional catalysts Co-MO-TUD-1 (MO = Al2O3, CeO2, NiO, or ZnO)
    Mohamed S. Hamdy
    Abdullah M. Alhanash
    Murad Eissa
    Fatma A. Ibrahim
    Mohamed Abboud
    Journal of Porous Materials, 2022, 29 : 1287 - 1298
  • [38] Selective oxidation of ethanol over Ag, Cu and Au nanoparticles supported on Li2O/γ-Al2O3
    Silbaugh, Trent L.
    Devlaminck, Pierre
    Sofranko, John A.
    Barteau, Mark A.
    JOURNAL OF CATALYSIS, 2018, 364 : 40 - 47
  • [39] Analysis of reaction mechanisms and kinetics of preferential CO oxidation over Au/γ-Al2O3
    Davran-Candan, Tugba
    Demir, Mehtap
    Yildirim, Ramazan
    REACTION KINETICS MECHANISMS AND CATALYSIS, 2011, 104 (02) : 389 - 398
  • [40] Promoted Ru/Al2O3 catalysts with improved low-temperature activity for CO2 methanation reaction
    Chen, Rong
    Shen, Liang
    Zhang, Wenhao
    Han, Yi-Fan
    Yang, Zixu
    Zhu, Minghui
    GREENHOUSE GASES-SCIENCE AND TECHNOLOGY, 2023, 13 (03) : 396 - 408
12345