Preparation and characterization of 6-molybdocobaltate and 6-molybdoaluminate cobalt salts. Evidence of a new heteropolymolybdate structure.
Molybdenum and cobalt based heteropolyanions (HPAs) could be used as an alternative to the conventional ammonium heptamolybdate and cobalt nitrate starting materials for friendly environmental preparation of Co-Mo/Al2O3 hydrotreating catalysts. In this aim, cobalt salts of molybdocobaltate and molydboaluminate Anderson HPAs have been synthesized and characterized by TGA, XRD, XAS, and vibrational spectroscopies. The crystal structure refinement provided evidence for the formation of a new heteropolyoxomolybdate derived from the well-known Anderson structure.
Martin
Catherine
C
Laboratoire de Catalyse de Lille, UMR CNRS 8010, Université des Sciences et Technologies de Lille, Bâtiment C3, 59650 Villeneuve d'Ascq, France.
Lamonier
Carole
C
Fournier
Michel
M
Mentré
Olivier
O
Harlé
Virginie
V
Guillaume
Denis
D
Payen
Edmond
E