精密微压差计算机数据采集系统测定过氧化氢分解反应速度常数  

Measuring Reaction Rate Constant of Hydrogen Peroxide Decomposition Reaction by Computer Data Acquisition System of Accurate Pressure Difference

作　　者：李将渊[1] 叶芝祥[2] 

机构地区：[1]四川师范学院化学系,四川南充637002 [2]成都信息工程学院地球环境科学系,四川成都610041

出　　处：《四川师范学院学报（自然科学版）》2002年第2期206-209,共4页Journal of Sichuan Teachers College(Natural Science)

摘　　要：报道了用传感器、直流放大器、数据采集存贮器、计算机等组成的精密微压差计算机数据采集系统 ,快速准确地跟踪测定了不同温度时过氧化氢分解反应压力与时间的关系 .计算机绘出的反应体系压差电势随时间变化的曲线物理意义明确 ,重现性好 ;将所采集的数据用计算机编程处理得到的ln(E∞ -Et) -t直线 ,其相关系数为0 .9998。This paper reports computer data acquisition system of accurate pressure difference, which is composed of accurate pressure difference sensor, direct current amplifier, A/D adapter and computer etc. The system has quickly measured the pressure and time of hydrogen peroxide decomposition reaction at different temperature. The curve plotted by program can represent definitely the tendency which the potential of pressure difference changes with the time. The reappearance of results is good. The covariance of the lineis regressed between (E ∞-E t)and time is 0.9998. By disposition of the above data,the activation energy and reaction rate constant are obtained and its result is satisfactory.

关 键 词：精密微压差计算机数据采集系统 速度常数 活化能 催化分解反应 反应压力 

分 类 号：O643.1[理学—物理化学] TP274.5[理学—化学]