氧化铝碳热还原氯化法制低价氯化铝反应的热力学研究

Thermodynamic study on the reaction of producing aluminum subchloride by carbothermic reduction and chlorination of alumina

对氧化铝碳热还原氯化法制低价氯化铝的反应进行了热力学研究,经过热力学计算得到:在常压下,该反应发生的起点温度为2121.21 K,而当系统压力下降时,该反应的起点温度也会下降;经过计算得到了该反应起点温度与系统压力间的关系,也得到了不同系统压力下反应吉布斯自由能与系统温度间的关系。

The reaction of producing aluminum subchloride by carbothermic reduction and chlorination of alumina was investigated thermodynamically. The thermodynamic calculation demonstrated that under normal pressure the starting temperature of the reaction is 2121.21℃ which will decrease if the system pressure drops. In addition, how the starting temperature relates to the system pressure was thus clarified, as well as how the Gibbs free energy in the reaction relates to the system temperature under different system pressures.