水热法制备纳米氧化镁  

Preparation of nanometric magnesium oxide by hydrothermal method

作　　者：鲁琴瑶 张荣良[1] 陆添爱 李聪 曾加 周琳凯 高妍妍 LU Qinyao;ZHANG Rongliang;LU Tian’ai;LI Cong;ZENG Jia;ZHOU Linkai;Gao Yanyan(School of Metallurgy and Materials Science,Jiangsu University of Science and Technology,Zhangjiagang 215600,China)

机构地区：[1]江苏科技大学冶金与材料工程学院,张家港215600

出　　处：《粉末冶金技术》2023年第4期350-355,共6页Powder Metallurgy Technology

基　　金：江苏省研究生创新项目(KYCX20_3133)。

摘　　要：以氯化镁与氨水为原料,聚乙二醇为分散剂,用水热法制备出纳米氧化镁。通过X射线衍射仪和扫描电子显微镜表征产物的晶体结构、显微形貌和颗粒尺寸,探讨了MgCl_(2)和氨水的摩尔比、反应温度、反应时间对前驱体的影响。对前驱体进行差热分析,研究前驱体煅烧温度和煅烧时间对纳米MgO的影响。结果表明:当MgCl_(2)和氨水的摩尔比为1.0:2.5,反应温度为200℃,反应时间为3.0 h,前驱体煅烧温度为600℃,煅烧时间为2.0 h时,得到的纳米MgO颗粒呈圆盘状,分散均匀,基本无团聚现象,颗粒直径约为100 nm,厚度最小约为10 nm。Nanometric magnesium oxide was prepared by hydrothermal method using magnesium chloride and ammonia water as the raw materials and polyethylene glycol as the dispersant.The crystal structure,microstructure,and particle size of the products were characterized by X-ray diffraction and scanning electron microscopy.The effects of molar ratio of MgCl_(2)to ammonia,reaction temperature,and reaction time on the precursors were discussed,and the influences of calcination temperature and calcination time on the nanometric magnesium oxide were investigated by the differential thermal analysis of the precursors.The results show that,when the molar ratio of MgCl_(2)to ammonia is 1.0:2.5,the reaction temperature is 200℃,the reaction time is 3.0 h,the precursor calcination temperature is 600℃,and the calcination time is 2.0 h,the MgO nanoparticles obtained are found to be disc-like and uniformly dispersed without agglomeration,showing a particle diameter of about 100 nm and a thickness of about 10 nm.

关 键 词：纳米氧化镁 水热法 前驱体 煅烧 粒径 

分 类 号：TQ132.2[化学工程—无机化工]