摘要
文章主要对液相法合成纳米氧化铁红水解的过程进行了研究,结合目前比较广泛接受的液相法合成机理,对铁盐水解的过程进行了比较完整的讨论。根据实验数据描绘了铁盐加碱过程体系pH对加碱量铁离子摩尔比的曲线,由此将铁盐水解过程分为三个阶段,即酸碱中和阶段,交联聚合阶段和解交联解聚合阶段。并且认为交联聚合和解交联解聚合是水解过程的两个关键阶段,交联聚合和解交联解聚合的快慢与进行的程度都将对终产物纳米级氧化铁红粉体的粒径及形态产生影响。
The hydrolysis procedure of the liquid phase preparation for nanometer ferric oxide red was studied in the paper. Points of view on the liquid phase synthesis mechanism were listed, and the hydrolysis procedure of molysite was also discussed integrated. The curve for pH of molysite hydrolysis system vs the molar ratio of NaOH/Fe^3＋, which based on the experimental data showed that the hydrolysis procedure of molysite consist of three period, the acid-base neutralization phase, cross linking-polymerization phase, and the crosslink-polymerization breaking phase. Both the cross linking phase and the crosslink breaking phase were important stages in the hydrolysis procedure. The particle diameter and the form of final product nanometer ferric oxide red were influenced by the rate and extent of cross linking and crosslink breaking.
出处
《广东化工》
CAS
2010年第4期50-51,共2页
Guangdong Chemical Industry
基金
广东医学院大学生课外科研基金项目(07DPZ014)
关键词
液相制备
纳米氧化铁红
铁盐碱水解
交联聚合
碱式水合铁离子
liquid phase preparation
nanometer ferric oxide red
molysite alkaline hydrolysis
cross linking-polymerization
sub-hydration ferric ion
