热动力学的研究(ⅩⅩⅢ)——一级反应的精选峰高法

Studies on Thermokinetics(ⅩⅩⅢ)——Selected Peak-Height Method for the First Order Reaction

本文建立了一种只需要精选一级反应热谱曲线上2个任意时刻的峰高,而不需要任何其它数据即可算得其反应速度常数的新算法.研究了三乙胺和碘乙烷在二甲亚砜中的季铵化反应,其速度常数的计算值和文献值吻合很好,证明了本法的正确性.

In this paper in the light of a theoretical thermogram curve equation of the first order reaction,a novel data processing method is proposed,in which the rate constant is calculated from both selected peak-height without using any peak-area and other data.Therefore the problems arisen from the peak-area-computation or from the error in reading can be avoided.In order to test the validity of this novel method,the kinetics of the reaction between tri-ethylamine and ethyl iodide are investigated in DMSO,The rate constant calculated with this novel method is in agreement with those in the literature,and therefore the basic pnciples of this selected peak-height method are believed to be correct.