摘要
测定了25C下K2SO4CO(NH2)2H2O及(NH4)2SO4CO(NH2)2H2O 两个三元体系相平衡的数据,并依据Pitzer电解质溶液理论对实验测定值进行了关联,关联结果与实验测定值相吻合. 通过测定25oC下K2SO4(NH4)2SO4CO(NH2)2H2O四元体系的相平衡数据可知尿素不能与硫酸钾或硫酸铵形成复盐,因此该四元体系的相平衡数据可近似由其所含三元体系的相互作用参数推算得出.
The solubilities of both ternary K2SO4CO(NH2)2H2O and (NH4)2SO4CO(NH2)2H2O systems and the quaternary K2SO4(NH4)2SO4CO(NH2)2H2O system were measured at 25oC. On the basis of Pitzer electrolyte solution theory, the experimental results were calculated and the calculated values agree with the experimental data. According to the phase equilibrium of the quaternary system of K2SO4(NH4)2SO4CO(NH2)2H2O at 25oC, it is found that no double salt is formed by K2SO4 or (NH4)2SO4 with CO(NH2)2, and thus the phase equilibrium of the quaternary system can be calculated with the ternary system interaction coefficients.
出处
《过程工程学报》
CAS
CSCD
北大核心
2003年第3期212-217,共6页
The Chinese Journal of Process Engineering
基金
河北省自然科学基金资助项目(编号: 200004)
河北省教委博士基金资助项目
