| Abstract Scope |
The reaction of metal oxides with an aqueous salt of another metal is a hybrid method that can have significant advantages for synthesis of bimetallic metal oxides. For example, the reaction of lanthanum oxide with aqueous vanadyl sulfate provides a simple pathway to LaVO4 or VO(OH)2 depending on stoichiometry. A similar reaction can be used to derivatize the surface of alumina catalyst support pellets to produce catalytic materials. Reaction of MoO3 with aqueous metal salts can be used to produce a myriad of metal molybdates. Indeed, these reactions can be used to remove heavy metals and uranium from contaminated waters. Replacement of MoO3 in these reactions by tungstic acid, H2WO4, provides low-temperature routes to metal tungstates. Examples of these reactions will be provided and the potential for these reactions will be discussed including a recent method for direct preparation of Na2Fe(MoO4), a promising battery electrode material. |