基于次氯酸钙的高铁酸钾制备与表征.pdf

第27卷第8期
化学研究与应用
ol.27,No.8
2015年8月
Chemical Research and Application
Aug,2015
文章编号:1004-1656(2015)08-17906
基于次氯酸钙的高铁酸钾制备与表征
刘前进,丁磊“12,钟梅英2
(1.安徽工业大学建筑工程学院,安徽马鞍山243002;
2.生物膜法水质净化与利用技术教育部工程研究中心,安徽马鞍山243002)
摘要:为提高化学氧化法制备高铁酸钾的安全性,以次氯酸钙和磯酸钾反应制备碱性饱和次氯酸钾,继而氧化
九水硝酸铁制备高铁酸钾。对制备条件进行了优化,结果表明次氯酸钾浓度1.15moM/L,反应时间60min,重
结晶碱浓度15.48mol/L,正戊烷和无水乙醇交替洗涤除杂条件下所制备的高铁酸钾纯度较高。采用傅里叶
变换红外光谱(FTIR)、X射线衍射(XRD)以及紫外-可见吸收光度法对样品进行定性分析,证实所制备样品
为高铁酸钾。采用邻菲罗呤分光光度法定量测定样品纯度,高铁酸钾含量大于97%。
关键词:高铁酸钾;次氯酸钙;制备;表征
中图分类号:0611.81文献标志码;:A
Preparation and characterization of potassium ferrate
based on calcium hypochlorite
LIU Qian-jin, DING Lei", ZHONG Mei-ying
(1. School of Civil Engineering and Architecture, Anhui University of Technology, Maanshan 243002, China
2. Engineering Research Center of Biomembrane Water Purification and Utilization Technology
Ministry of Education, Maanshan 243002, China)
Abstract: To improve the securty of chemical oxida ion prcess of preang potassium erate, alkaline potassium hypochlorite ob-
tained by a reaction of calcium hypochlorite and potassium carbonate was used to oxidize the ferric nitrate to prepare potassium fer
ate The results iniae ha e optimal conditions of ferae preparation were given as below: the concentration of potassium hy
pochlorite a l. 15 mo /, reaction time at 60 min, cr s all ion solution of alkali concentration at 15.48 mol/L, and n-pentane
nd absolute ethyl alcohol altemating washing, Fourier Tran om In rared(ft-ir )X-A i action(XRD)and Ultraviolet and visi
ble spectrophotometry were used to analysis ferrate samples and confirmed that these samples were potassium ferrate. The phenanth
roline spectrohotometric method was used o determine the purity of samples, and the results showed that the purity of potassium
ferrate was greater than 97%0
Key words: potassium ferrate; calcium hypochlorite; preparation; characterization
高铁酸钾(K2FeO,)是一种六价铁盐,在整个分泌干扰物?等污染物。经氧化还原反应,六价
H范围内具有强氧化性リ,可氧化去除水中氨铁被还原成三价铁,在水中形成氢氧化铁胶体,对
氮1、藻类]、重金属4、抗生素类药物?以及内水中悬浮物、胶体以及有机物具有很好地助凝、絮
(收稿日期:2014-1224;修回日期:20150408
基金项目:国家自然科学基金资助(项目批准号:51308001);安徽省大学生创新创业训练计划项目(AHD01310360282)
联系人简介:丁磊(1978-),男,副教授,主要从事水处理理论与技术研究。E-mail:dinglei1978@163.com