摘要
以NaOH与FeSO4·7H2O为原料,在纯氧加压条件下反应得到铁红晶种,并研究了其转化为α-Fe2O3的历程。利用X射线衍射仪、激光粒度仪与场发射扫描电镜等对产物进行表征。结果表明,产物的晶型、颜色均与空气法晶种氧化出来的α-Fe2O3相同。但是纯氧法可节省大量时间、提高生产效率,且通过控制反应时间可以得到所需粒径与颜色的铁红产品。
Ferric oxide red crystal seeds are obtained through reacting Na OH with FeSO4·7H2O under pure oxygen pressure conditions and the process of Fe SO4·7H2O toα-Fe2O3 is studied.The product is characterized by an X-ray diffractometer,a laser particle size analyzer,and a field emission scanning electron microscope.The results show that the amorphous form ofδ-Fe OOH is formed under oxygen conditions,and can be further oxidized toα-Fe2O3,and the seed form and color of the product are the same as theα-Fe2O3 synthesized by air crystal seed method.However,the pure oxygen method can save more time and gain a higher production efficiency than air crystal seed method.Through controlling the reaction time,the ferric oxide product with desired particle size and color can be obtained.
作者
陈永杨
施险峰
马利群
张淑平
CHEN Yong-yang;SHI Xian-feng;MA Li-qun;ZHANG Shu-ping(University of Shanghai for Science&Technology,Shanghai 200093,China;Technology Center,Shanghai Huayi(Group)Company,Shanghai 200241,China)
出处
《现代化工》
CAS
CSCD
北大核心
2020年第7期180-182,186,共4页
Modern Chemical Industry
关键词
铁红晶种
纯氧氧化
δ-FeOOH
氧化铁红
ferric oxide red crystal seed
pure-oxygen oxidation
δ-FeOOH
ferric oxide red
