MOLTEN SODIUM NITRITE-POTASSIUM NITRITE EUTECTIC - REACTION OF SOME COMPOUNDS OF MOLYBDENUM

Molybdenum(VI) oxide, ammonium molybdate and molybdic acid reacted in molten sodium nitrite-potassium nitrite eutectic to form orthomolybdate, nitrogen dioxide and nitric oxide (with nitrate as a secondary product), a more polymerised polymolybdate being formed as an intermediate product. Tungsten(VI) oxide reacted similarly but less rapidly. Molybdenum and tungsten metals reacted to form the orthoxyanion and nitrogen, the latter metal reacting considerably faster and forming smaller amounts of nitric oxide and nitrous oxide. Reaction temperatures and stoichiometries are given and reaction pathways suggested. © 1978.