硫酸铵浸出法由白云石制备纳米氧化镁  

Synthesis of Nano Magnesium Oxide from Dolomite via Ammonium Sulfate Leaching

作　　者：黄春晖[1] 徐嘉欣 颜粉鸽 宗俊[1] 

机构地区：[1]华东师范大学化学与分子工程学院化学系,上海200241

出　　处：《盐科学与化工》2017年第4期6-11,共6页Journal of Salt Science and Chemical Industry

摘　　要：以经过800℃煅烧的轻烧白云石为原料,硫酸铵为浸出剂,采用硫酸铵浸出法从轻烧白云石中浸出得到硫酸镁,再经直接沉淀制备出管状纳米氧化镁。采用XRD、FI-IR、SEM、TEM等对合成的纳米氧化镁进行了表征,研究了表面活性剂十二烷基硫酸钠的添加对纳米氧化镁的晶粒尺寸、形貌和晶体生长行为的影响。With ammonium sulfate as lixiviant,magnesium sulfate was obtained from light-burned dolomite calcined at 800 ℃ via ammonium sulfate leaching,subsequently nano magnesium oxide was prepared by direct precipitation method. As-synthesized nano magnesium oxide was characterized by XRD,FI-IR,SEM and TEM. The influence of sodium dodecyl sulfate on crystallite size,morphology and crystal growth behavior of nano magnesium oxide was also investigated.

关 键 词：白云石 纳米氧化镁 十二烷基硫酸钠 晶体生长 活化能 

分 类 号：TQ132.2[化学工程—无机化工]