Leaching of manganese dioxide from porous bodies

被引：0
|
作者：
V. M. Orlov
E. N. Kiselev
机构：
[1] Russian Academy of Sciences,Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Resources, Kola Scientific Center
来源：
Russian Journal of Applied Chemistry | 2012年 / 85卷
关键词：
Tantalum; Hydrochloric Acid Solution; Porous Body; Manganese Dioxide; Tantalum Powder;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Results of a study of the kinetics of manganese dioxide leaching from pores in anodes of solid-electrolyte capacitors are presented. It is shown that manganese dioxide present in pores is the most effectively dissolved at room temperature under treatment with dilute solutions of sulfuric and hydrochloric acids to which hydrogen peroxide is added in not-less-than-stoichiometric amounts according to the reactions MnO2 + H2SO4 + H2O2 = MnSO4 + 2H2O + O2→ and MnO2 + 2HCl + H2O2 = MnCl2 + 2H2O + O2→. The initial acid concentration does not exceed 36% for H2SO4 and 18% for HCl.
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页码：1699 / 1702
页数：3
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