应用化学2011，Vol.28Issue(4)：483-485,3.DOI:10.3724/SP.J.1095.2011.00433
萃取Fe3+和氨水-乙醇反萃沉淀法制备α-Fe2O3
Extraction of Fe3+ by Bi-(2-ethylhexyl)phosphate and Preparation of α-Fe2O3 by Stripping Precipitation Method with Ammonia-alcohol
摘要
Abstract
Fe3+ was extracted from Fe( NO3 )3 by liquid phase extraction using a mixture of bi-(2-ethylhexyl) phosphate ( P204 ) and tetrachloride carbon. Fe ( OH) 3 powders were prepared through stripping precipitation method with ammoniα-alcohol aqueous solution as a re-extractant and precipitator. α-Fe2 O3 powders were obtained by decomposing Fe(OH)3 at an appropriate temperature and characterized by TEM, FTIR, and XRD. The results show that the P204 contents are in the oil phase, Fe3+ contents are in the water phase, and the reaction time has obvious influence on the extraction of Fe3 +. Under the optimum conditions of phase volume ratio at 1∶1, c ( Fe3 + ) at 0. 10 mol/L (pH = 3. 0), volume ratio of P204 and CC14 as 1∶3, and reaction time of 20 min, 98. 44% of Fe3+ is extracted. α-Fe2O3 powders with a small size and uniformity are obtained at 600 ℃. The optimum aging temperature and concentration of ammonia aqueous are 10. 0 ℃ and 1∶7, respectively.关键词
萃取/反萃沉淀法/α-Fe2O3/纳米粉体Key words
extraction,stripping precipitation method,α-Fe2O3 ,nano-powder分类
化学化工引用本文复制引用
张凌云,管航敏,黎汉生,江可..萃取Fe3+和氨水-乙醇反萃沉淀法制备α-Fe2O3[J].应用化学,2011,28(4):483-485,3.基金项目
国家自然科学基金(20506002)、安徽省教育厅自然科学基金和青年教师基金(KJ2009B243Z,2007JQ1150)资助项目 （20506002）
