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<strong>Thermodynamic and kinetic study of CO2 adsorption/desorptionon amine-functionalized sorbents</strong>

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Title Statement <strong>Thermodynamic and kinetic study of CO2 adsorption/desorptionon amine-functionalized sorbents</strong>
 
Added Entry - Uncontrolled Name Liu, Yamin ; Fujian University of Technology
Xiong, Min ; Fujian University of Technology
Zhang, Chengbiao ; Fujian University of Technology
Weng, Xiuping ; Fujian University of Technology
Shi, Ronghui ; Fujian University of Technology
Yu, Xiaojing ; Fujian University of Technology
Natural Science Foundation of Fujian Province
 
Uncontrolled Index Term Thermodynamic; Kinetic; CO2; Adsorption; Desorption
 
Summary, etc. The thermodynamic and kinetic characteristics of CO<sub>2</sub> adsorption of SBA-16 loaded with pentaethylenehexamine (PEHA) have been investigated using adsorption column system. The Langmuir isotherm model fitts the CO<sub>2</sub> adsorption isotherms well, and the average isosteric heat of adsorption is 59.6 kJ/mol, indicating that the CO<sub>2</sub> adsorption on PEHA-loaded SBA-16 is chemisorption. The Avrami fractional dynamics model is very suitable for illustrating the adsorption behaviour of CO<sub>2</sub> adsorption, and the results of kinetic analysis show that increasing the partial pressure of CO<sub>2</sub> or the working temperature is beneficial to the adsorption of CO<sub>2</sub>. Three desorption methods were evaluatedto achieve the optimal desorption method. The results show that VTSA and steam stripping method are effective methods for industrial CO<sub>2</sub> desorption. Steam stripping may be more suitable for plants that already have low-cost steam. The activation energy <em>E<sub>a</sub></em> of CO<sub>2</sub> adsorption/desorption is calculated using Arrhenius equation. The activation energy <em>E<sub>a</sub></em> of CO<sub>2</sub> adsorption/desorption was calculated using the Arrhenius equation. The results show that the absolute value of <em>E<sub>a</sub></em> (adsorption) decreases with the increase of CO<sub>2</sub> partial pressure. In addition, the <em>E<sub>a </sub></em>value of vacuum rotary regeneration method and steam stripping method is smaller than the <em>E<sub>a</sub></em> value of temperature swing regeneration.
 
Publication, Distribution, Etc. Indian Journal of Chemical Technology (IJCT)
2019-12-16 16:15:24
 
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http://op.niscair.res.in/index.php/IJCT/article/view/21111
 
Data Source Entry Indian Journal of Chemical Technology (IJCT); ##issue.vol## 26, ##issue.no## 6 (2019): Indian Journal of Chemical Technololgy
 
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Nonspecific Relationship Entry http://op.niscair.res.in/index.php/IJCT/article/download/21111/465465875