Nitridation of magnesium powder of nanometric size from the thermal decomposition of magnesium anthracene

Highly reactive magnesium powder of nanometric size, which was generated by the thermal decomposition of magnesium anthracene . 3THF under vacuum, can react with N-2 under atmospheric pressure, even at 300 degrees C, to form magnesium nitride. The rate and extent of the reaction can be improved effectively by doping the magnesium powder with a small amount of nickel or titanium compounds.

Synthesis of nanometric-size magnesium nitride by the nitriding of pre-activated magnesium powder

Magnesium nitride (Mg3N2) was synthesized by the reaction of magnesium in the highly reactive form (Mg*) with nitrogen at 450 degrees C under normal pressure. The effect of doping with nickel dichloride on the nitridation of Mg* was investigated. Differential thermal analysis (DTA) of Mg* systems and transmission electron microscopy (TEM) measurement of the product formed were carried out. TEM measurement showed that the particle size of the Mg3N2 synthesized was in the nanometric range. The dependence of nitridation of the NiCl2-doped Mg* on temperature was investigated at temperatures ranging from 300 to 500 degrees C. The nitridation of NiCl2-doped Mg* could occur even at temperature as low as 300 degrees C. (C) 1999 Kluwer Academic Publishers.

Colorimetric and ratiometric fluorescence sensing of fluoride: Tuning selectivity in proton transfer

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