关于镧、镨、钕、钐水合氯化物脱水过程动力学的研究

高等学校化学学报 ›› 1983, Vol. 4 ›› Issue (4): 493.

关于镧、镨、钕、钐水合氯化物脱水过程动力学的研究

龚政, 陈佩珩, 郭志箴, 马晋华, 陈运生

西北大学化学系

收稿日期:1982-02-04 出版日期:1983-08-24 发布日期:1983-08-24

A STUDY ON KINETICS OF DEHYDRATION PROCESS OF LANTHANUM, PRASEODYMIUM, NEODYMIUM, SAMARIUM CHLORIDE HYDRATES

Gong Zheng, Chen Peiheng, Guo Zhizhen, Ma Jinhua, Chen Yunsheng

Department of Chemistry, Northwestern University, Xi'an

Received:1982-02-04 Online:1983-08-24 Published:1983-08-24

摘要/Abstract

摘要： 本文提出了建立合理动力学方程的简单、快速方法。该法首先用图解法选择可能的g(α),并根据文中公式(7)、(8)求出相应的活化能,考虑频率因子的合理性,找出最理想的转换率积分函数g(α),从而确定被研究反应的动力学方程、动力学参数及其反应机理。并用于处理了镧、镨、钕、钐水合氯化物的热分析数据,求得了各水合物不同脱水阶段的动力学方程、动力学参数和反应机理。对有关脱水过程进行了讨论。

Abstract: A fast and simple method for establishing the reasonable kinetic function of the titled process, g(α) was presented. This consists of.(1) Choosing more possible ones(may be 2 or more) graphically, and calculating corresponding activation energy E by using the following formula:(β: heating rate, R: gas const., T: temperature K) (2) Calculating the activation energy by the following formula at a given a value:(3) Comparing the different values of E obtained in (2) with those obtained in (1) and considering. the rationality, of frequency factor A and thus deciding which g(α) is more reasonable.The kinetic equations, the corresponding parameters and the mechanism of dehydration processes of titled hydrates in vacunm and nitrogen gas had been determined and disccused.

TrendMD:

龚政, 陈佩珩, 郭志箴, 马晋华, 陈运生. 关于镧、镨、钕、钐水合氯化物脱水过程动力学的研究. 高等学校化学学报, 1983, 4(4): 493.

Gong Zheng, Chen Peiheng, Guo Zhizhen, Ma Jinhua, Chen Yunsheng. A STUDY ON KINETICS OF DEHYDRATION PROCESS OF LANTHANUM, PRASEODYMIUM, NEODYMIUM, SAMARIUM CHLORIDE HYDRATES. Chem. J. Chinese Universities, 1983, 4(4): 493.