摘要
Abstract
At atmospheric pressure, manganese oxide was prepared by reduction-precipitiation method with potassium permanganate as raw material to interact with precipitant in the presence of hydrogen peroxide. By the static crucible method,the effects of different precipitating agent,calcination temperature and react-ant ratio on the combustion properties of manganese oxide were studied. The restults show that when the ammonium bicarbonate was selected as precipitant in the reaction, higher promotion-combustion-efficiency (PCE) was found. The PCE were also found incresing with the incresing of manganese oxide calcination temperature and prepartion reaction temperature. With more hydrogen peroxide were added in the prepara-ton reaction,the PCE of manganese oxide were enhanced. The best conditions for preparing manganese dioxide were as fllows: A solution of 0. 05 mol of potassium permanganate as a benchmark, 30% hydrogen peroxide 50 mL,0. 25 moI/L of ammonium bicarbonate 20 mL, water bath at 50℃ ,for 3 hours of reaction, calcination temperature at 500℃ The aboved manganese oxide was of 3% PCE.关键词
高锰酸钾/双氧水/静态坩埚法/还原沉淀法/助燃效率Key words
potassium permanganate/ hydrogen peroxide/ static crucible method/ reduction-precipitiation method/ promotion-combustion-efficiency分类
化学化工
