There are several methods to prepare mixed metal oxides, including:
- Co-precipitation: Metal salts are co-precipitated from a solution, followed by calcination to form the mixed oxide. - Sol-Gel Process: Metal alkoxides are hydrolyzed and polymerized to form a gel, which is then calcined. - Combustion Synthesis: Metal nitrates are mixed with a fuel and ignited, resulting in the formation of mixed metal oxides. - Solid-State Reaction: Metal oxides or salts are ground together and heated to induce a solid-state reaction.
Each method has its advantages and specific applications, allowing for the fine-tuning of the MMO properties.