Serna C J, White J L, Hem S L
J Pharm Sci. 1978 Aug;67(8):1179-81. doi: 10.1002/jps.2600670845.
The variables affecting homogeneous precipitation in the hydrolysis of aluminum nitrate by sodium carbonate were studied. Increased temperature, decreased concentration of reactants, and decreased rate of addition of titrant favor conditions that achieve homogeneous precipitation. During acid hydrolysis, the nitrate anion was the major anion associated with the gel and only small amounts of carbonate were observed. It is recommended that homogeneous conditions be achieved during the precipitation of aluminum hydroxide gel to improve reporducibility.
研究了碳酸钠水解硝酸铝过程中影响均匀沉淀的变量。升高温度、降低反应物浓度以及降低滴定剂添加速率有利于实现均匀沉淀的条件。在酸水解过程中，硝酸根阴离子是与凝胶相关的主要阴离子，仅观察到少量碳酸根。建议在氢氧化铝凝胶沉淀过程中实现均匀条件以提高重现性。
