摘要
以FeSO4.7H2O和NH4HCO3为原料,在少量表面活性剂聚乙二醇(PEG)-400的存在下,先在室温下充分混合研磨进行固相反应,然后用水洗去反应混合物中的可溶性无机盐并烘干,即得氧化铁红的前驱体,前驱体再经热解即得氧化铁红产品。采用TG/DTA、IR、XRD和SEM对前驱体及其热解产品进行了表征。结果表明,前驱体的热解是经一步完成的,烘干后的前驱体碳酸亚铁已基本上分解成了氧化物;在550℃下热解前驱体2 h,得到了纯晶相的三方Fe2O3,其粒度约为43 nm。
Precursor of Fe203 was obtained when FeSO4·7H20 and NH4HCO3 were fully ground in the presence of surfactant PEG-400 via solid-state reaction at room temperature, then mixture was washed with water to remove soluble inorganic salts and was dried. Fe2O3 was obtained by thermal decomposition of precursor. Precursor and product were characterized by TG/DTA,IR,XRD and SEM. The result showed that precursor was decomposed via only one-step, and precursor has been basically decomposed into oxide after drying. Pure Fe203 was obtained via thermal decomposition of precursor at 550℃ for 2 h. Its average particle diameter was about 43 nm.
出处
《应用化工》
CAS
CSCD
2006年第3期164-166,共3页
Applied Chemical Industry
基金
教育部科研重点项目资助(205120)
关键词
三氧化二铁
纳米
室温固相反应
合成
表征
Fe2O3
nanometer
solid-state reaction at room temperature
synthesis
characterization
