化工矿物与加工2025，Vol.54Issue(2)：43-51,9.DOI:10.16283/j.cnki.hgkwyjg.2025.02.006
P507反相微乳液法合成球形球霰石
Synthesis of spherical vaterite by P507 inverse microemulsion method
摘要
Abstract
Calcium carbonate crystals of vaterite have unique physical and chemical properties,and have great appli-cation prospects in fields such as daily use,biomedicine,and new materials.Spherical aragonite calcium carbonate par-ticles were synthesized by reverse microemulsion method with surfactant P507,secondary octanol and kerosene as raw materials,and explored the effects of the ratio of water to P507 substance(water surface ratio),reactant concentra-tion,and pH on the morphology and crystal form of calcium carbonate.The morphology and structure of the product were characterized by scanning electron microscopy,X-ray diffraction,Fourier transform infrared spectroscopy,and thermogravimetric analysis.The results indicate that P507 effectively regulates the morphology and crystal structure of calcium carbonate,and the spherical crystal structure of calcium carbonate is mainly aragonite.The formation mecha-nism of spherical calcium carbonate is the formation of CaA2 chelates by P507 and Ca2+.Calcium carbonate nucleates and grows on the surface of the CaA2 chelate,and CaA2 self-organizes the calcium carbonate to form a fibrous struc-ture radiating from the center of the particles,which then develops into a"wheat bundle"structure and ultimately forms a sphere.关键词
碳酸钙/P507/表面活性剂/微乳液法/球霰石/晶型/螯合物Key words
calcium carbonate/P507/surfactants/microemulsion method/chalazite/crystal form/chelate compound分类
化学工程引用本文复制引用
曾剑扬,曾一文,陈珍明,朱妍,王仲民..P507反相微乳液法合成球形球霰石[J].化工矿物与加工,2025,54(2):43-51,9.基金项目
广西科技计划项目(桂科AD23023008) （桂科AD23023008）
广西碳酸钙资源综合利用重点实验室开放课题(HZXYKFKT202201) （HZXYKFKT202201）
贺州学院2021年度教授科研启动基金项目(HZUJS202103). （HZUJS202103）
