Non-isothermal Dehydration Kinetics of Potassium Citrate Monohydrate

2nd International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Wang, Xiaofang^1 ; Dong, Jun^1 ; Fan, Songlin^1 ; Han, Fang^1 ; Wang, Yu^1

Petroleum Engineering Research Institute of Petrochina Dagang Oilfield, Tianjin, China^1

关键词: Dehydration kinetics;    Dehydration process;    Kinetic functions;    Non-isothermal dehydration;    Potassium citrate;    Preexponential factor;    Thermodynamic functions;    Transition theories;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/490/2/022047/pdf
DOI  :  10.1088/1757-899X/490/2/022047

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The dehydration kinetic of potassium citrate monohydrate has been investigated by TG-DTG. The kinetic parameters of activation energy and pre-exponential factor were calculated using the methods of FWO and KAS. The results show that the kinetic parameters calculated by two methods were consistent. Meanwhile, the most probable kinetic function was acquires by means of the Malek method. The thermodynamic functions of the dehydration process are then calculated according to the transition theory, which indicate that the dehydration process of potassium citrate monohydrate is endothermic and non-spontaneous.