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.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
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
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
nano-sized magnesia
hexamethylene tetramine
precipitation method
polymer protection
