高比表面积羟基氧化铁的制备及影响因素

Preparation of hydroxyl iron oxide with high specific surface area and its influencing factors

采用先氧化后中和的方法制备具有高比表面积的羟基氧化铁,考察不同碱源以及亚铁离子浓度对羟基氧化铁的影响。通过XRD、红外光谱、N2吸附等手段对比分析使用碳酸氢铵和1.2～1.5 mol/L亚铁可合成出比表面积为305的羟基氧化铁。

The hydroxyl iron oxide with high specific surface area is prepared with the method of oxidation before neutralization. The effect of different alkali source and ferrous ion concentration on hydroxyl iron oxide is studied. XRD,IR and BET are used to characterize the resultant hydroxyl iron oxide. The specific surface area of hydroxyl iron oxide can reach 305 when the best alkali source is ammonium bicarbonate and the most suitable ferrous ion concentration is 1. 5-1. 7 mol/L.