广州化学2024，Vol.49Issue(4)：42-46,5.DOI:10.16560/j.cnki.gzhx.20240404
二水磷酸铁结晶过程的晶型可控研究
Crystal Form Controlled in Crystallization Processes of FePO4·2H2O
摘要
Abstract
The controllable synthesis of different crystal forms of iron phosphate dihydrate was carried out,and the influence of the concentration of iron,oxidation time,oxidation temperature,aging and seed crystal on the crystal forms of FePO4·2H2O were comprehensively investigated.Results indicate that aging time have no effect on the crystal transformation,and pure crystal form of monoclinic FePO4·2H2O is obtained.Besides,the high purity of orthorhombic FePO4·2H2O could be obtained during the process such as lower concentration of iron,higher oxidation time,temperature or addition of seed crystal.The single crystal analysis indicates that the intramolecular hydrogen bond has effect on the thermodynamic stability of FePO4·2H2O,and the order of thermal stability is orthorhombic>monoclinic.关键词
FePO4·2H2O/晶型转化/单斜晶系/正交晶系/热力学稳定性Key words
iron phosphate dihydrate/crystal transformation/monoclinic/orthorhombic/thermodynamic stability分类
化学化工引用本文复制引用
李立平,李煜乾..二水磷酸铁结晶过程的晶型可控研究[J].广州化学,2024,49(4):42-46,5.基金项目
国家重点研发计划青年科学家项目(2022YFC2906000) （2022YFC2906000）
