Get access

Synthesis of MoVTeNb Oxide Catalysts with Tunable Particle Dimensions

Authors

  • Dr. Yury V. Kolen'ko,

    1. Present address: International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga, s/n, 4715-330 Braga (Portugal)
    Search for more papers by this author
  • Dr. Wei Zhang,

    1. Present address: RisøNational Laboratory for Sustainable Energy, Technical University of Denmark, Frederiksborgvej 399, 4000 Roskilde (Denmark)
    Search for more papers by this author
  • Dr. Raoul Naumann d'Alnoncourt,

    1. Department of Inorganic Chemistry, Fritz Haber Institute of the Max Planck Society, Faradayweg 4–6, 14195 Berlin (Germany), Fax: (+49) 30-8413-4405
    Search for more papers by this author
  • Dr. Frank Girgsdies,

    1. Department of Inorganic Chemistry, Fritz Haber Institute of the Max Planck Society, Faradayweg 4–6, 14195 Berlin (Germany), Fax: (+49) 30-8413-4405
    Search for more papers by this author
  • Dr. Thomas W. Hansen,

    1. Present address: Center for Electron Nanoscopy, Technical University of Denmark, Fysikvej Building 30, 2800 Kongens Lyngby (Denmark)
    Search for more papers by this author
  • Till Wolfram,

    1. Department of Inorganic Chemistry, Fritz Haber Institute of the Max Planck Society, Faradayweg 4–6, 14195 Berlin (Germany), Fax: (+49) 30-8413-4405
    Search for more papers by this author
  • Prof. Robert Schlögl,

    1. Department of Inorganic Chemistry, Fritz Haber Institute of the Max Planck Society, Faradayweg 4–6, 14195 Berlin (Germany), Fax: (+49) 30-8413-4405
    Search for more papers by this author
  • Dr. Annette Trunschke

    Corresponding author
    1. Department of Inorganic Chemistry, Fritz Haber Institute of the Max Planck Society, Faradayweg 4–6, 14195 Berlin (Germany), Fax: (+49) 30-8413-4405
    • Department of Inorganic Chemistry, Fritz Haber Institute of the Max Planck Society, Faradayweg 4–6, 14195 Berlin (Germany), Fax: (+49) 30-8413-4405
    Search for more papers by this author

Abstract

Reliable procedures for the controlled synthesis of phase-pure MoVTeNb mixed oxides with M1 structure (ICSD 55097) and tunable crystal dimensions were developed to study the structure sensitivity of the selective oxidation of propane to acrylic acid. A series of powdered M1 catalysts was successfully prepared on a gram scale by using a hydrothermal-based route, purification of biphasic M1-M2 (M2 phase – ICSD 55098) oxide systems, and an innovative approach utilizing a superheated water vapor treatment of calcined precursors. The influence of the preparation technique on the particle morphology and the size is discussed. Detailed experimental studies highlight that the as-derived catalytic materials were indeed phase-pure and compositionally uniform MoVTeNb oxide M1 powders, composed of single-crystalline and structural defect-free crystals grown along the c axis. The morphologically different catalysts were studied in the selective oxidation of propane to acrylic acid, revealing that active sites appear on the entire M1 surface and illustrating the high sensitivity of catalyst performance on the catalyst synthesis method.

Get access to the full text of this article

Ancillary