高分子保护沉淀法制备超细纳米氧化镁  

Preparation of Extra Fine Nano-sized MgO by Precipitation and Polymer Protection Method

作　　者：王海霞[1] 胡炳元[2] 王麟生[1] 杨广达[1] 李强[1] 

机构地区：[1]华东师范大学化学系,上海200062 [2]华东师范大学物理系,上海200062

出　　处：《无机化学学报》2006年第2期363-366,共4页Chinese Journal of Inorganic Chemistry

基　　金：上海市科委纳米专项基金(No.0452nm026)资助

摘　　要：The precursor for nano-sized magnesia was prepared by using Mg(NO3)2·6H2O as raw material, the hydrolysis product of hexamethylene tetramine as precipitating reagent and water as reaction media, and with the polymer (PEG) and DMF as protection reagents for particles. Nano-sized magnesia was prepared by calcining the precursor at 873 K after being dehydrated by freeze centrifugation and vacuum drying at a constant temperature. The formation process and structure of MgO nanocrystallites were investigated by means of TG-DTA, FTIR, TEM, XRD and BET. The results showed that the crystal belonged to cubic system and the average size was 3.1 nm and the specific surface area was 229 m2·g-1.The precursor for nano-sized magnesia was prepared by using Mg（NO3）2·6H2O as raw material, the hydrolysis product of hexamethylene tetramine as precipitating reagent and water as reaction media, and with the polymer （PEG） and DMF as protection reagents for particles. Nano-sized magnesia was prepared by calcining the precursor at 873 K after being dehydrated by freeze centrifugation and vacuum drying at a constant temperature. The formation process and structure of MgO nanocrystallites were investigated by means of TG-DTA, FTIR, TEM, XRD and BET. The results showed that the crystal belonged to cubic system and the average size was 3.1 nm and the specific surface area was 229 m2·g^-1.

关 键 词：纳米氧化镁 六次亚甲基四胺 均匀沉淀法 高分子保护 

分 类 号：O614.22[理学—无机化学]