超声波法制备纳米硫酸钡影响因素分析  

Ultrasonic preparation of nano-barium sulfate and the effect factors

作　　者：乔永志[1] 张云[1] 张志昆[1] 赵丹[1] 熊春燕[1] 张向京[1] 

机构地区：[1]河北科技大学化学与制药工程学院,河北石家庄050018

出　　处：《河北工业科技》2012年第1期16-19,共4页Hebei Journal of Industrial Science and Technology

摘　　要：采用超声波法制备纳米硫酸钡,考察了加料方式、反应介质、反应物浓度、超声功率比、超声反应时间、反应温度对粒径的影响。采用激光粒度仪和扫描电子显微镜对产品的粒径、形貌进行了表征。实验结果表明,以无水乙醇作为反应介质,硫酸钠与氯化钡的浓度均为0.25mol/L,采用等体积同时加料方式,超声功率比为40%,反应温度为30℃,超声反应时间为15min,制得的纳米硫酸钡平均粒径为55nm,粒度分布窄,形貌呈不规则球形。Nano-barium sulfate was prepared with ultrasonic,and the influence of feeding methods,the reaction medium,reactant concentration,ultrasonic power ratio,ultrasonic response time,reaction temperature in the preparation process on the particle size of the product appearance was studied.The particle size was characterized by Laser granulometer and scanning electron microscopy.The experimental results show that average particle size of nano-barium sulfate is 55 nm with anhydrous ethanol as the reaction medium when reactant concentration is 0.25 mol/L,feeding methods are adopted simultaneously,ultrasonic power ratio is 40%,reactant temperature is 30 ℃ and ultrasonic dispersion time is 15 min.The distribution of the particle size is narrow and it is in irregular spherical shape.

关 键 词：超声波 纳米硫酸钡 粒径 影响因素 

分 类 号：TQ125[化学工程—无机化工]