高技术通讯2025，Vol.35Issue(6)：651-661,11.DOI:10.3772/j.issn.1002-0470.2025.06.009
超声强化受限撞击流反应器中制备纳米氧化锆的研究
Investigation on the preparation of nanosized zirconia in an ultrasonic-enhanced confined impinging jet reactor
摘要
Abstract
Ultrasound is employed to enhance the coprecipitation reaction and crystallization process in a confined impin-ging jet reactor to optimize the synthesis of zirconia nanoparticles.The synergistic effect of ultrasonic cavitation effect and hydrodynamic factors on the reactive precipitation process of zirconia nanoparticles and their effects on the properties of the prepared particles are studied by experiments and numerical simulation.Scanning electron mi-croscope(SEM)and X-ray diffraction(XRD)are used to characterize the morphology,structure and particle size distribution of the particles prepared with or without ultrasound.The results show that the convection of the fluid flow in the triangle region just above the impinging centre and at the outlet is significantly enhanced by the ultra-sound.The flowback behaviour is effectively suppressed,the turbulent dissipation rate and chemical reaction rate in the reactor are greatly increased,and the flow mixing performance of the reactor is enhanced.Compared with nano-partilces synthesized without ultrasound,smaller micro-spherical zirconia nanoparticles with smaller particle size and narrower size distribution are obtained with application of ultrasound.Zirconia tends to appear in tetragonal phase structure.When the ultrasonic power exceeds 210 W,the prepared ultrafine zirconia powder is tetragonal zir-conia with high purity.关键词
超声/受限撞击流反应器/氧化锆/粒度分布/数值模拟Key words
ultrasound/confined impinging jet reactor/zirconium oxide/particle size distribution/numerical simulation引用本文复制引用
张伟宾,陈律名,杜强,张琳伟,张玮,陈冰冰..超声强化受限撞击流反应器中制备纳米氧化锆的研究[J].高技术通讯,2025,35(6):651-661,11.基金项目
国家自然科学基金(21908195)资助项目. （21908195）
