Influences of synthesis methods and modifier addition on the properties of Ni-based catalysts supported on reticulated ceramic foams

  • Vesna Nikolić
  • Željko Kamberović
  • Zoran Anđić
  • Marija Korać
  • Miroslav Sokić
  • Vesna Maksimović
Article
  • 78 Downloads

Abstract

A method of synthesizing Ni-based catalysts supported on α-Al2O3-based foams was developed. The foams were impregnated with aqueous solutions of metal chlorides under an air atmosphere using an aerosol route. Separate procedures involved calcination to form oxides and drying to obtain chlorides on the foam surface. The synthesized samples were subsequently reduced with hydrogen. With respect to the Ni/Al2O3 catalysts, the chloride reduction route enabled the formation of a Ni coating without agglomerates or cracks. Further research included catalyst modification by the addition of Pd, Cu, and Fe. The influences of the additives on the degree of reduction and on the low-temperature reduction effectiveness (533 and 633 K) were examined and compared for the catalysts obtained from oxides and chlorides. Greater degrees of reduction were achieved with chlorides, whereas Pd was the most effective modifier among those investigated. The reduction process was nearly complete at 533 K in the sample that contained 0.1wt% Pd. A lower reduction temperature was utilized, and the calcination step was avoided, which may enhance the economical and technological aspects of the developed catalyst production method.

Keywords

catalysts nickel ceramic foams modification aerosol process catalytic properties 

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Copyright information

© University of Science and Technology Beijing and Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Vesna Nikolić
    • 1
  • Željko Kamberović
    • 2
  • Zoran Anđić
    • 3
  • Marija Korać
    • 2
  • Miroslav Sokić
    • 4
  • Vesna Maksimović
    • 5
  1. 1.Innovation Center of the Faculty of Technology and MetallurgyUniversity of BelgradeBelgradeSerbia
  2. 2.Faculty of Technology and MetallurgyUniversity of BelgradeBelgradeSerbia
  3. 3.Innovation Center of the Faculty of ChemistryUniversity of BelgradeBelgradeSerbia
  4. 4.Institute for Technology of Nuclear and other Raw MaterialsBelgradeSerbia
  5. 5.Institute for Nuclear Sciences ‘Vinča’BelgradeSerbia

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