NH_4Cl焙烧氯化Gd_2O_3的热力学研究  

Thermodynamics Study on Chlorination of Gd_2O_3 with NH_4Cl Roasting Method

作　　者：褚意新[1] 时文中[2] 左春山[2] 徐启杰[2] 

机构地区：[1]河南中医药大学药学院,河南郑州450008 [2]黄淮学院化学与制药工程学院,河南驻马店463000

出　　处：《广州化工》2016年第20期35-36,87,共3页GuangZhou Chemical Industry

基　　金：河南省基础理论与前沿技术研究计划资助项目(NO:092300410123)

摘　　要：利用化学热力学原理和热力学函数的数据,通过计算对氯化铵焙烧氯化氧化钆的反应进行了热力学分析。结果表明:氯化铵焙烧氯化氧化钆在热力学上是可行的;氯化铵焙烧氯化氧化钆反应的起始温度为553 K,温度到达587 K时氯化反应进行完全;Gd Cl3(s)发生水解的起始温度为600 K;氯化铵能够有效地抑制Gd Cl3(s)的水解;氯化反应的温度应在600 K左右;使用2倍理论量的氯化铵是提高氯化率和无水氯化钆含量的关键。The reaction of chlorination of Gd2O3 with NH4Cl roasting method was analyzed on the thermodynamics in way of calculation,it mainly used the principle of chemical thermodynamics and the related data of thermodynamics function. The experimental results indicated that the reaction was feasible in the thermodynamics,initial temperature of chlorination reaction was 553 K and chlorination reaction was basically completed about 587 K. Hydrolysis initial temperature of GdCl3 was 664. 2 K,temperature of chlorination reaction should be controlled between 590 K and 640 K.Excessive ammonium chloride can effectively inhibit the emergence of the hydrolysis reaction under the suitable chlorination temperature.

关 键 词：氯化铵 焙烧 氧化钆 氯化反应 热力学 

分 类 号：O643.1[理学—物理化学] TF111.13[理学—化学]