CO2 Capture on a Novel Porous Silicate Material from Coal Gangue: Equilibrium, Kinetic, and Thermodynamic Studies

Bulletin of the Korean Chemical Society

Yajun Gao¹  Hong Du² 

[1] College of Chemical Engineering Inner Mongolia University of Technology Hohhot 010051 China;Inner Mongolia Engineering Research Center for CO2 Capture and Utilization Hohhot 010051 China

关键词: CO2 adsorption;    Porous silicate material;    Equilibrium;    Kinetic;    Thermodynamic;   

DOI  :  10.1002/bkcs.11364

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

The adsorption of CO2 on a novel porous silicate material (PSM) from coal gangue at T = (288.15, 303.15, and 318.15) K was thoroughly characterized, and the experimental results showed that the adsorption capacity increased with the increasing pressures. Furthermore, the isotherm data were well fitted to Double–Langmuir model, and the adsorption process was found to be exothermic in nature with a decrease in entropy. Meanwhile, thermodynamic results also showed that the adsorption occurred via a spontaneous and enthalpy driven process and controlled by physisorption. In addition, the adsorption performance was still stable after 10 times adsorption—desorption cycles, which indicated that the PSM had a positive regeneration performance.

【 授权许可】

Unknown