Divanadiinitetrakoksidi

Divanadiinitetrakoksidi, also known as vanadium(IV) oxide, is a chemical compound with the formula V2O4. It is a dark blue or black solid that is insoluble in water but soluble in acids. The compound is composed of vanadium in its +4 oxidation state and oxygen. It is a member of the vanadium oxide family, which includes other compounds such as vanadium(V) oxide (V2O5) and vanadium dioxide (VO2).

Divanadiinitetrakoksidi is primarily used as a precursor in the synthesis of other vanadium compounds. It is also used in the production of catalysts for various chemical reactions, including the oxidation of alcohols to aldehydes and ketones. Additionally, it has been studied for its potential applications in energy storage and conversion technologies, such as in lithium-ion batteries and supercapacitors.

The compound can be prepared through the thermal decomposition of vanadium(V) oxide or by the reaction of vanadium metal with oxygen at high temperatures. It is typically characterized by its dark color, insolubility in water, and its ability to form complexes with various ligands.

Divanadiinitetrakoksidi is a relatively stable compound under normal conditions, but it can react with strong oxidizing agents to form higher oxidation state vanadium compounds. It is also sensitive to moisture and can hydrolyze in the presence of water, forming vanadium hydroxide and other related compounds.