安徽机电学院学报
安徽機電學院學報
안휘궤전학원학보
JOURNAL OF ANHUISTITUTE OF MECHANICAL AND ELECTRICAL ENGINEERING
2001年
1期
32-35
,共4页
固相反应%动力学%动力学参数%等温热分析
固相反應%動力學%動力學參數%等溫熱分析
고상반응%동역학%동역학삼수%등온열분석
用等温热重法研究了无水醋酸锌与无水草酸的固相化学反应，反应分2步进行，通过对转化率数据α进行动力学拟合得到了反应的动力学方程.转化率α较低时发生第一步反应，动力学方程(1－α)－1/2=Ae－E/RTt式中E=70.72kJ/mol、A=4.43×108min－1；转化率α较高时发生第二步反应，动力学方程(1－2α/3)－(1－α)2/3=Ae－E/RTt式中E=122.7kJ/mol、A=9.81×1014min－1.
用等溫熱重法研究瞭無水醋痠鋅與無水草痠的固相化學反應，反應分2步進行，通過對轉化率數據α進行動力學擬閤得到瞭反應的動力學方程.轉化率α較低時髮生第一步反應，動力學方程(1－α)－1/2=Ae－E/RTt式中E=70.72kJ/mol、A=4.43×108min－1；轉化率α較高時髮生第二步反應，動力學方程(1－2α/3)－(1－α)2/3=Ae－E/RTt式中E=122.7kJ/mol、A=9.81×1014min－1.
용등온열중법연구료무수작산자여무수초산적고상화학반응，반응분2보진행，통과대전화솔수거α진행동역학의합득도료반응적동역학방정.전화솔α교저시발생제일보반응，동역학방정(1－α)－1/2=Ae－E/RTt식중E=70.72kJ/mol、A=4.43×108min－1；전화솔α교고시발생제이보반응，동역학방정(1－2α/3)－(1－α)2/3=Ae－E/RTt식중E=122.7kJ/mol、A=9.81×1014min－1.
The solid state reaction between Zn(CH3COO)2 andH2C2O4 underisothermal condition was studied by TG. The reaction was described by two steps. Their kinetic expressions were obtained by treating the fraction α of conversion with different mechanism functions g(α ). The first step was carried out with a small α , its kinetic expression is (1－ α )－1/2=Ae－E/RTt where E=70.72 kJ/mol and A=4.43× 108 min－1; the second step was carried out with a large α , its kinetic expression is (1－2α/3)－ (1－α )2/3=Ae－E/RTt where E=122.7 kJ/mol and A=9.81× 1014 min－1.
