文档介绍：铝酸钠溶液中和制备纳米丝状氢氧化铝李艳 1,2 , 张亦飞 1 , 杨超 1 , 张懿 1 (,北京, 100080 2. 中国科学院研究生院,北京, 100049) 摘要: 研究了铝酸钠溶液的盐酸中和过程对氢氧化铝晶体的形貌,晶型和铝酸钠溶液分解率的影响。实验结果表明,随着反应体系 pH 值的下降,氢氧化铝的形貌在不断发生变化, 且 pH 值越大,晶体越大;不论 pH 值如何变化,氢氧化铝的晶型总是 gibbsite ;铝酸钠溶液的分解率随溶液 pH 值降低而升高。关键词:铝酸钠;氢氧化铝;中和;纳米丝中图分类号:TQ 文献标识码: A Fibre-like aluminium hydroxide nanoparticles prepared by neutralization of sodium aluminate solution LI Yan 1,2 ,ZHANG Yifei 1 ,YANG Chao 1 ,ZHANG Yi 1 ( 1. Institute of Process Engineering, Chinese Academy of Sciences. Beijing, 100080 ,China University of Chinese Academy of Sciences. Beijing, 100049,China) Abstract: Procedure for precipitating aluminium hydroxide from sodium aluminate solution was investigated, and hydrochloric acid was used as neutralization agent. Effect of pH on the crystal morphology, crystal type and sodium aluminate position rate were studied. The experimental results showed that the crystal morphology of aluminium hydroxide varied with the decreasing pH value of the solution, in addition, the higher the pH value the larger the crystallites of the precipitates; no matter how the pH value ch anged, the precipitates always were gibbsite; and the position rate increased with the decrease of the pH value. Key words: sodium aluminate; aluminium hydrate; neutralization; nano-fibre 基金项目:国家重点基础研究计划( 2007CB613501 ) 作者简介:李艳,博士研究生;电话: