NaHCO_3热分解动力学研究  

A kinetic study on sodium bicarbonate thermal decomposition

作　　者：景晓明[1] 赵志刚[1] 廖戎[1] 燕文权[1] 

机构地区：[1]西南民族大学化学与环境保护工程学院,成都610041

出　　处：《西南民族大学学报（自然科学版）》2003年第3期301-305,共5页Journal of Southwest Minzu University(Natural Science Edition)

摘　　要：用稍加改装的Vicotor Meyer法测分子量装置,跟踪NaHCO_3热分解产物CO_2体积变化,对常压NaHCO_3等温热分解反应动力学探索。实验表明,动力学方程为lg(1-x)=-Kt,表观活化能为103.34kJ/mol,在1atm CO_2中,NaHCO_3热分解产物只影响反应速度,不影响反应模式。A kinetic study of sodium bicarbonate isothermal decomposition under normal atmosphere is studied by improved Vicotor Meyer measuring molecular weight apparatus, through determining the volume change of CO2.The experiment result indicates that kinetic equation can be expressed as follows: lg( 1-x) = -Kt, the active energy is 103.34kJ/mol under the condition of 1 atm CO2, the product of sodium bicarbonate decomposition has only influence on the reaction rate, but no influence on the mechanism of the reaction.

关 键 词：碳酸氢钠 热分解 动力学方程 固相反应 非均相过程 

分 类 号：O643.133[理学—物理化学]