Tin(II) Oxidation by Oxygen and Formation of Sn(IV)–Sn(II) Colloid

• Autorzy: Rozovskis G. , Pautieniene V. , Mockus Z.
• Języki publikacji: EN

Abstrakty

EN

Sn(IV) compounds, formed by a slow oxidation of Sn(II) by air in HCl or H2SO4 solutions, take part in formation of non-stable colloid particles, which coagulate rather quickly. Introduction of additional amount of Sn(IV) to the solutions of Sn(II) in HCl or H2SO4 or formation of Sn(IV) during high-rate catalytic oxidation of Sn(II) by oxygen results in formation of yellow-coloured stable colloid solutions. The colloid particles formed in HCl solution are charged positively, while formed in H2SO4 solution they are charged negatively. Sn(IV)–Sn(II) colloid particles act as an inhibitor of the process of Sn(II) oxidation by oxygen in both HCl and H2SO4 solutions. However, the colloid particles do not change the rate of Sn(II) oxidation in the H2SO4 solution with addition of Cu(II), catalyzing this reaction.

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2000
• Tom: Vol. 74, nr 12
• Strony: 1665--1674
• Opis fizyczny: Bibliogr. 14 poz., rys.

Twórcy

autor

Rozovskis G.

autor

Pautieniene V.

autor

Mockus Z.

• nstitute of Chemistry, A. Goštauto 9, LT–2600 Vilnius, Lithuania,