What is Niobium oxide

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Submitted by admin on Thu, 12/27/2018 - 08:48

Niobium oxide has various oxides, namely Niobium monooxide, Niobium dioxide, Niobium trioxide, Niobium pentoxide. Gerhold Chemetals Co., Ltd supply the Niobium oxide for sale, Let me introduce the various Niobium oxides for you:

Niobium oxide: also known as "Niobium dioxide", chemical formula NbO or Nb2O2, molecular weight 108.91. It has a metallic lustrous black cubic crystal with good metal conductivity. The relative density is 7.30. Soluble in sulfuric acid, hydrochloric acid and alkali, insoluble in water, nitric acid and ethanol, obtained by reduction of chlorine oxide Niobium with magnesium metal.

Niobium(II) oxide: chemical formula NbO2, molecular weight 124.90. Black powder. The relative density is 5.9. Soluble in hot alkaline solution, insoluble in mineral acids and ethanol such as water and nitric acid. It is obtained by reducing Niobium pentoxide with hydrogen under heating.

Niobium(III) oxide: chemical formula Nb2O3, molecular weight 233.81, blue-black solid, melting point 1780 ° C, available from magnesium metal to reduce Niobium pentoxide.

Niobium(V) oxide: chemical formula Nb2O5, molecular weight 265.81, white crystal, melting point 1460 ° C, relative density 4.47, relative dielectric constant 35-50, band gap 3.4 eV. It is yellowish when heated to 400 ° C, soluble in hydrofluoric acid, hot sulfuric acid and alkali. Insoluble in water is the most stable oxide. The chemical formula of the hydrate is Nb2O5·xH2O, which is decomposed by heat, soluble in concentrated sulfuric acid, concentrated hydrochloric acid, hydrofluoric acid and strong alkali, insoluble in water and ammonia, and can be obtained by burning metal Niobium in air or dehydrating with Niobium acid.

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Need to pay attention of Niobium(V) oxide