[1]乔梅英,陈可可..均匀沉淀法制备纳米氧化镁[J].郑州大学学报(工学版),2013,34(04):99-102.[doi:10.3969/j.issn.1671-6833.2013.04.023]
　QIAO Mei-ying,CHEN Ke-ke.Preparation of Nanometer Magnesia with Homogeneous Precipitation[J].Journal of Zhengzhou University (Engineering Science),2013,34(04):99-102.[doi:10.3969/j.issn.1671-6833.2013.04.023]
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均匀沉淀法制备纳米氧化镁()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
34
期数:
2013年04期
页码:
99-102
栏目:
出版日期:
2013-09-09

文章信息/Info

Title:
Preparation of Nanometer Magnesia with Homogeneous Precipitation
作者:
乔梅英; 陈可可.
河南科技学院化学化工学院,河南新乡,453002, 新乡学院化学与化工学院,河南新乡,453003
Author(s):
QIAO Mei-ying1; CHEN Ke-ke2
1.Henan Institute of Science and Technology ，Xinxiang 453002,China;2.Xinxiang University， Xinxiang 453002，China
关键词:
纳米氧化镁;  均匀沉淀法;  煅烧工艺
Keywords:
nano-MgO;  homogeneous precipitation method;  calcination technology
分类号:
TQ132.2
DOI:
10.3969/j.issn.1671-6833.2013.04.023
摘要:
以尿素为沉淀剂、六水合氯化镁为金属盐溶液、聚乙烯醇(PVA)为分散剂,采用均匀沉淀法制得氢氧化镁,并将其煅烧制得纳米氧化镁.分别讨论了分散剂用量、反应物配比、反应温度和时间、前驱物氢氧化镁的煅烧温度和时间对产物纳米氧化镁的粒径的影响,获得了最佳工艺条件.分别用X射线粉末衍射法(XRD)、及扫描电镜(SEM)对该纳米晶体的结构和性能进行了表征.结果表明:聚乙烯醇加入量为溶液质量的0.5‰,尿素与六水合氯化镁摩尔比为6∶1时,于100℃反应4h,在500℃煅烧1.5h得到纳米氧化镁粉体,平均粒径为50 nm.
Abstract:
Abstract: Using MgCl2·6H,0 and CO(NH2) , as raw materials，PVA as dispersing agent, we have first syn-thesized Mg( OH)2, precursor with a homogeneous precipitation method，and the nanometer sized magnesiumoxide ( nano-Mg0) with average size of 50 nm is obtained by calcinations of the precursor. The effects of reac-tion temperature，reaction time and reactant ratio on yield of Mg(OH)2, are investigated.The calcination tech-nology of nano-Mg0 is determined by the analysis of apparent specific volume. Morphological structure of thenano-Mg0 is analyzed by SEM. The optimized reaction parameters for synthesizing Mg( OH)2 , are : the reactiontemperature: 100 ℃ , the reaction time: 4 h，reactant molar ratio: ( CO(NH2), to MgCl2·6H,0)=6:1,best calcination temperature : 500 ℃ and calcination time : 1.5 h.
更新日期/Last Update: 1900-01-01