磷铁废渣绿色循环制备三磷化锰的热力学研究  

Thermodynamic Study on Preparation of MnP from Ferrophosphorus By-product of Phosphorus Chemical Industry

作　　者：赵金叶 徐海超 李秋霞[1] 荆碧[1] 冯乔莲 ZHAO Jin-ye;XU Hai-chao;LI Qiu-xia;JING Bi;FENG Qiao-lian(Faculty of Chemistry and Chemical Engineering,Yunnan Normal University,Kunming 650500,China)

机构地区：[1]云南师范大学化学化工学院,云南昆明650500

出　　处：《云南师范大学学报（自然科学版）》2022年第4期45-48,共4页Journal of Yunnan Normal University:Natural Sciences Edition

基　　金：云南师范大学博士科研启动基金资助项目(2020ZB008);云南省大学生创新创业训练计划资助项目(202110681023).

摘　　要：采用吉布斯自由能函数法,对以磷铁为原料添加锰制备三磷化锰MnP_(3)的反应热力学进行计算研究;结果表明:在298~1000K范围内,向FeP、Fe_(2)P和Mn中投入一定量的CaO和SiO_(2),随着温度升高反应的吉布斯自由能变化值逐渐下降,分别由4.062kJ·mol^(-1)下降到-7.774kJ·mol^(-1)以及1.544kJ·mol^(-1)下降到-18.876kJ·mol^(-1),在温度分别大于552K和368K时,进行反应可以制备三磷化锰.Gibbs free energy function method was used to calculate and analyze the thermodynamic process of preparing manganese triphosphide from ferrophosphorus which is a by-product of phosphorus chemical industry.The results show that:the Gibbs free energy of the reaction decreases gradually from 4.062 kJ·mol to-7.774kJ·mol,and from 1.544 kJ·mol to-18.876 kJ·mol.When the reaction temperature of FeP,FeP and Mn is greater than 552 K and 368 K respectively,the manganese triphosphide could be prepared.

关 键 词：三磷化锰 磷铁 制备 热力学 

分 类 号：TQ013[化学工程]