【摘要】 实验表明在发生相转化的FeCl3－HCl水解体系中，醇的存在起到了相转化抑制剂的作用，降低了α－Fe2O3沉淀组分的过饱和浓度，减少了成核数目，有利于形成较大的均匀胶体粒子．粒子尺寸随浓度的增加而加大，形状因球形趋变为立方体．更多还原

【Abstract】 Alcohol, presented in the hydrolysis of ferric chloride at elevated temperature,inhibits the phase transformation from β-FeOOH to a-Fe2O3, reduces the supersaturation of the precipitated species α-F2O3, decreases the number of nucleation and therefore favours the formation of much larger uniform α-F2O3 particles. With increasing amount of alcohol, the sizes of particles increase, while the shapes of them change gradually from sphere to cube.更多还原