CO2 Capture on a Novel Porous Silicate Material from Coal Gangue: Equilibrium, Kinetic, and Thermodynamic Studies
CO2 Capture on a Novel Porous Silicate Material from Coal Gangue: Equilibrium, Kinetic, and Thermodynamic Studies
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DOI：
10.1002/bkcs.11364
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发表时间：
2018-02
影响因子：
1.7
通讯作者：
Yajun Gao;Hong Du;Yu Wu;Kai Liu;Jianbin Zhang
中科院分区：
文献类型：
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作者：
Yajun Gao;Hong Du;Yu Wu;Kai Liu;Jianbin Zhang
全面表征了新型多孔硅酸盐材料（PSM）在T=（288.15、303.15和318.15）K时对煤矸石的CO2吸附，实验结果表明，吸附容量随着压力的增加而增加。此外，等温线数据很好地符合Double-Langmuir模型，并且发现吸附过程本质上是放热的，并且熵减少。同时，热力学结果还表明，吸附是通过自发和焓驱动的过程发生并受物理吸附控制的。此外，经过10次吸附-解吸循环后，吸附性能仍然稳定，表明PSM具有良好的再生性能。
The adsorption of CO2on a novel porous silicate material (PSM) from coal gangue atT= (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.