摘要
The kinetics of dissolution and transformation process of 2MgO·2B2O3·MgCl2·14H2O in 4.5% H3BO3 aqueous solution at 50℃ was studied.The liquid samples were taken at different time for chemical analysis,and the solid phase at different stages was separated and identified.The experimental results showed that 2MgO·2B2O3·MgCl2·14H2Odissolved congruently in 4.5%H3BO3aqueous solution,which was different from the process of the dissolution of 2MgO·2B2O3·MgCl2·14H2O in water.The final solid phase was kurnakovite（2MgO·3B2O3·15H2O）.The kinetic equations of the crystallization reaction were given with the aid of Simplex Optimum Method and Runge-Kutta digital solution of differential equation system.The mechanism of dissolution and transformation were proposed and discussed.
The kinetics of dissolution and transformation process of 2MgO·2B_2O_3·MgCl_2·14H_2O in 4.5% H_3BO_3 aqueous solution at 50℃ was studied.The liquid samples were taken at different time for chemical analysis,and the solid phase at different stages was separated and identified.The experimental results showed that 2MgO·2B_2O_3·MgCl_2·14H_2Odissolved congruently in 4.5%H_3BO_3aqueous solution,which was different from the process of the dissolution of 2MgO·2B_2O_3·MgCl_2·14H_2O in water.The final solid phase was kurnakovite(2MgO·3B_2O_3·15H_2O).The kinetic equations of the crystallization reaction were given with the aid of Simplex Optimum Method and Runge-Kutta digital solution of differential equation system.The mechanism of dissolution and transformation were proposed and discussed.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2005年第1期66-68,共3页
Chemical Research and Application
基金
国家自然科学基金资助项目(29971032)
