Ammonium metavanadate

Ammonium metavanadate is an inorganic salt with formula NH₄VO₃. It is used as a precursor to vanadium compounds and catalysts.

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Thermal decomposition: The chemical breakdown of a substance caused by heating. Heating ammonium metavanadate releases ammonia and water while producing vanadium oxides.
Ammonium: The polyatomic cation NH₄⁺, formed by protonation of ammonia. It is the positively charged ion paired with metavanadate in the salt.
Sulfuric acid: A strong mineral acid with formula H₂SO₄, widely used in chemical manufacturing. Vanadium pentoxide prepared from this salt catalyzes sulfur dioxide oxidation in sulfuric acid production.
Ammonium vanadate: A general name for ammonium salts containing vanadate oxyanions. The broader name can include this metavanadate salt and other ammonium vanadates.
Vanadium pentoxide: An orange crystalline oxide of vanadium with formula V₂O₅. It is a major product formed by heating ammonium metavanadate.
Vanadate: An oxyanion containing vanadium and oxygen, often found in multiple protonation and polymerization states. Metavanadate belongs to the broader family of vanadate ions.
Contact process: The industrial process for producing sulfuric acid by catalytic oxidation of sulfur dioxide. Its vanadium-based catalyst can be made from ammonium metavanadate.
Sodium metavanadate: An inorganic salt containing sodium ions and metavanadate anions. It has the same metavanadate anion but a different counterion and material properties.
Ammonia: A colorless nitrogen hydride with formula NH₃. Ammonia is released when ammonium metavanadate decomposes on heating.
Vanadium: A transition metal with atomic number 23 that forms compounds in several oxidation states. The salt’s distinctive chemistry comes from its vanadium center.