MnFe2O4 polycrystalline powders were prepared by the chemical coprecipitation method. When the reaction temperature is a......

实验研究了氨水的浓度、氨水的用量、氨浸时间、温度对浸出率的影响。称取1g（精确到0．0001g）的矿样，经过最佳条件的焙烧后，最佳浸出条件......

Nanocrystalline SnO2 was synthesized by direct mixing and grinding of SnCl4·5H2O and NaOH at roomtemperature, followed ......