溶出温度和压强对铝酸钠溶液结构的影响  

Effect of Dissolving-Out Temperature and Pressure on Structure of Sodium Aluminate Solution

作　　者：张少云[1] 刘云清[1] 陈启元[1] 马建业[1] 

机构地区：[1]中南大学化学化工学院,长沙410083

出　　处：《有色金属（冶炼部分）》2011年第1期16-19,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家973计划资助项目(2005CB623702)

摘　　要：采用红外光谱、紫外光谱、X射线衍射和扫描电镜研究了溶出温度和压强对铝酸钠溶液的结构组成以及溶出液沉淀的结构和形貌的影响。结果表明,溶出温度和压强对铝酸钠溶液的结构组成以及晶体的形貌有较大的影响。在较高温度较高压力下,铝酸钠溶液中的主要阴离子是Al(OH)4-,溶出液沉淀较疏松;在较低温度较低压力下,铝酸钠溶液中不仅存在Al(OH)4-,还存在复合铝酸根离子,溶出液沉淀比较紧密;溶出温度压强对溶出液沉淀的红外光谱和XRD结构无明显的影响。The relationships between dissolving-out temperature and pressure, the structure of sodium aluminate solution and products morphology applying IR, UV, XRD, SEM are studied. The results show that the dissolving-out temperature and pressure have influences on the structure of sodium aluminate solution and products morphology. The main anion is Al（OH）4 and the product is loose at higher temperature and higher pressure. The main anions are AI（OH）4 and [（HO）3Al-O-Al（OH）3]2- , the products is compact at lower temperature and lower pressure. Dissolving-out temperature pressure has no obvious effect on the structure of products.

关 键 词：铝酸钠溶液 溶出 温度和压强 结构 形貌 

分 类 号：TF821[冶金工程—有色金属冶金] O614[理学—无机化学]