摘要
首先就粒度对纳米硫酸钡的溶解度和溶度积影响进行了理论分析,分别推导出了溶解度和溶度积与粒度间的热力学关系式;然后测定了不同粒径的纳米硫酸钡的溶解度和溶度积;讨论了粒度对纳米硫酸钡溶解度和溶度积的影响规律。研究结果表明:粒度对硫酸钡的溶解度和溶度积有显著影响;粒度越小其溶解度和溶度积越大,并且纳米硫酸钡溶解度的对数和溶度积的对数均与其粒径的倒数呈线性关系;其实验结果与理论分析一致。
The effects of particle size on the solubility and sol ubility product of nano-BaSO4 were analyzed in theory,the thermodynamic rela tions between solubility and particle size and between solubility pr oduct and particle size were derived.Besides,the solubility a nd solubility product of nano-BaSO4 with different sizes were determined, and and effects of particle size on the solubility and solubility product w ere discussed.The results show that the particle size of nano-BaSO4 had a con siderable influence on the solubility and solubility product;the smaller size led to the higher solubility and solubility product,and the logarithm of the solubility and the logarithm of the solubility product had linear relation with the reciprocal of particle size separately;and the experimental results are in accordance with the theoretical analysis.
出处
《太原理工大学学报》
CAS
北大核心
2012年第3期314-318,共5页
Journal of Taiyuan University of Technology
基金
国家自然科学基金资助项目(20773092)
关键词
纳米硫酸钡
粒度
溶度积
nano-barium sulfate
solubility product
solubility
