过碳酸钠热分解动力学理论分析与实验验证

Theoretical Analysis of the Thermal Decomposition Kinetics of Sodium Percarbonate and Its Experimental Verification

简述了改良湿渣法制备过碳酸钠的方法,设计了过碳酸钠在空气氛围和氮气氛围的实验.从理论上对过碳酸钠分解动力学实验进行了统计设计,确定了最佳实验点的位置,并通过实验进行了验证.研究结果表明,在过碳酸钠分解率为0.1及0.85两个位置做实验,能够对过碳酸钠分解动力学模型中的两参数k和t0精确估值.

In this paper, the preparation of sodium percarbonate in modified wet method was referred and the experiment for decom- position of sodium percarbonate in nitrogen gas and air was provided. The thermal decomposition kinetics experiment of sodium percarbonate was statistically designed in theory and the optimum experlmental position was determined. The results were confirmed by the experiment that the optimum experimental positions were 10 percent and 85 percent of reaction fraction. When the experiment was done at the two points, the relative error of k was least.