Chinese Journal of Catalysis

Chinese Journal of Catalysis ›› 2013, Vol. 34 ›› Issue (11): 2009-2017.DOI: 10.1016/S1872-2067(12)60715-3

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Selection of oxide supports to anchor desirable bimetallic structures for ethanol reforming and 1, 3-butadiene hydrogenation

Tiefeng Wanga, William Lonerganb, Jingguang G. Chenc   

  1. a Beijing Key Lab of Green Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;
    b Center for Catalytic Science and Technology (CCST), Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA;
    c Department of Chemical Engineering, Columbia University, New York, NY 10027, USA
  • Received:2013-09-12 Revised:2013-09-16 Online:2013-10-18 Published:2013-10-18
  • Contact: Tiefeng Wang,Jingguang G. Chen
  • Supported by:

    This work was supported as part of the Catalysis Center for Energy Innovation, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Basic Energy Sciences under Award Number DE-SC0001004, and Program for New Century Excellent Talents in University of China (NCET-12-0297).

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Abstract:

Ethanol reforming and 1,3-butadiene hydrogenation reactions were studied on Pt-Ni bimetallic and monometallic catalysts supported on several supports, including γ-Al2O3, SiO2, TiO2, CeO2, and high surface area (HSA) and low surface area (LSA) ZrO2, to elucidate the effect of oxide supports on the bimetallic structures and catalytic activity. The catalysts were prepared by co-impregnation and were characterized by pulse CO chemisorption, transmission electron microscopy, and extended X-ray absorption fine structure. Reactions were carried out in a Fourier transform infrared batch reactor. The supports strongly affected the catalytic activity. For ethanol reforming, the activities of the Pt-Ni bimetallic catalysts were in the order TiO2 > SiO2 > γ-Al2O3 ≈ LSA-ZrO2 > CeO2 > HSA-ZrO2; while for 1,3-butadiene hydrogenation, the order was SiO2 > CeO2 > γ-Al2O3 > LSA-ZrO2 > HSA-ZrO2 ≈ TiO2. For the hydrogenation reaction, the Pt-Ni bimetallic catalysts outperformed the Pt and Ni monometallic catalysts; in contrast, for the reforming reaction, synergetic bimetallic effects were only found on SiO2, TiO2, and HSA-ZrO2.

Key words: Platium-nickel bimetallic catalyst, Support effect, Ethanol reforming, 1,3-Butadiene hydrogenation, Extended X-ray absorption fine structure