以四元相图为指导原理的硫酸钾制备实验在本科实验教学中的开展和探索

彭扬超, 胡旺, 刘雨昂, 范勇, 朱万春, 宋志光, 马强, 郭玉鹏

Development and Exploration of Potassium Sulfate Preparation Experiment Guided by Quaternary Phase Diagrams in Undergraduate Experimental Teaching

Yangchao Peng, Wang Hu, Yuang Liu, Yong Fan, Wanchun Zhu, Zhiguang Song, Qiang Ma, Yupeng Guo

表3 时间对硫酸钾制备反应产率及质量的影响

实验组 m(KCl)/g m(钾芒硝)/g V(H2O)/mL 时间/h m(K2SO4)/g 产率/% ω(Cl)/% (法扬斯法) ω(Cl)/% (分光光度法) ω(氧化钾)/% Ⅰ 1.30 2.00 5.5 1 1.63–1.69 77.73–80.59 0.47 0.47 62.72 Ⅱ 1.30 2.00 5.5 2 1.31–1.43 62.47–68.19 0.39 0.41 59.40 Ⅲ 1.30 2.00 5.5 3 0.98–1.12 46.74–53.41 0.33 0.33 60.94