Salt containing (Xn+Mo12O40)3-, where X is P(V), AS(V), Te(VI), Si(IV), etc. This kind of salt is generally yellow in different shades. The salts of free acids and small cations are easily soluble in water, and also soluble in organic solvents such as ether, alcohol, and ketone. The salts of large cations such as (such as Cs+, Ba2+, Pb2+) are insoluble in water. Solid salts have high thermal stability. After acidifying molybdate to a certain pH value, it can be obtained by adding dropwise a salt solution containing heteroatoms. Used as flame retardant and organic synthesis catalyst. Also used as dyes and pigments.
Dodecamolybdate heteropolyacids are a class of compounds composed of dodecamolybdate ions (Mo12O40) and other cations. They belong to a kind of polyacid compound, and polyacid refers to a multi-nuclear multi-charged polymer composed of multiple metal ions and oxygen atoms. The dodecamolybdate ion in the dodecamolybdate heteropolyacid is a polynuclear cluster composed of 12 molybdenum atoms and 40 oxygen atoms.
The chemical formula of dodecamolybdate is usually (NH4)4[Mo12O40], where NH4 represents ammonium ion. In addition to the ammonium salt form, dodecamolybdenum heteropolyacid can also form different salts with other cations, such as sodium salt, potassium salt, etc.
Dodecamolybdenum heteropolyacid has a variety of special chemical and physical properties. They usually have good thermal stability, electrochemical activity and catalytic activity, and can be used in catalysts, electrochemical cells, photoelectric materials and other fields. Dodecamolybdenum heteropolysalt also exhibits certain anti-oxidation properties and can be used as an antioxidant and material protection agent.
Dodecamolybdenum heteropolyacids have been widely studied and applied in the field of catalysis. Due to their special structure and electronic properties, they can be used as catalysts in reactions such as oxidation reactions, reduction reactions, acid-base reactions, and organic synthesis. In addition, dodecamolybdenum heteropolyacids also have certain photocatalytic properties, which can be used in photocatalytic reactions and preparation of photoelectric materials.
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