Solvothermal Morphology Studies: Alkali and Alkaline Earth Molybdates

✍ Scribed by Alexej Michailovski; Frank Krumeich; Greta R. Patzke

• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: German
• Weight: 648 KB
• Volume: 87
• Category: Article
• ISSN: 0018-019X
• DOI: 10.1002/hlca.200490095

✦ Synopsis

Abstract

A convenient and systematic solvothermal pathway towards alkali and alkaline‐earth molybdates has been established. The solvothermal treatment of a molybdenum‐based precursor material (yellow molybdic acid, MoO~3~⋅2 H~2~O) with ionic additives (alkali or alkaline‐earth halides) provides access to a spectrum of molybdates. Their particle morphology can further be addressed by optimizing the reaction conditions. The resulting products cover a wide scope of sizes and morphologies, ranging from molybdenum oxide fibres with high aspect ratios and nanoscale diameters to millimeter‐sized crystals of novel alkali molybdates. Both anionic and cationic additives exhibit certain synthetic profiles that offer the perspective of turning this approach into a ‘toolbox’ for the tailoring of molybdate‐based materials.