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Application and Properties of Microporous Carbons Activated by ZnCl2: Adsorption Behavior and Activation Mechanism.
ACS Omega ( IF 3.7 ) Pub Date : 2020-04-13 , DOI: 10.1021/acsomega.0c00461 Bowen Li 1 , Juncheng Hu 1 , He Xiong 1 , Yang Xiao 1
ACS Omega ( IF 3.7 ) Pub Date : 2020-04-13 , DOI: 10.1021/acsomega.0c00461 Bowen Li 1 , Juncheng Hu 1 , He Xiong 1 , Yang Xiao 1
Affiliation
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Herein, polypyrrole-based porous carbon (PPC) was prepared by ZnCl2 activation for toluene adsorption from paraffin liquid. The structure properties were adjusted by a dosage of activating agents and carbonization temperature. The result with a 3:1 mass ratio of ZnCl2/PPy at 600 °C showed the highest micropore area and percentage of micropore volume of 1105 m2/g and 86.26%, respectively. In addition, the PPC surface was rich in functional groups and obtained a high N-doped content from 7.00 to 8.82%. The toluene adsorption behavior onto the PPC was comprehensively investigated including isotherms, kinetics, and thermodynamics. The adsorption isotherm accorded with the Freundlich model well, and the kinetic model was fitted more closely to the pseudo-second-order chemisorption. The thermodynamic research uncovered that the adsorption was spontaneous and an endothermic process in essence. The ZnCl2 activation mechanism is discussed based on TG/TGA curves and pore structure analysis at last. The devised way of synthesized microporous carbon is green and simple, which is suited to mass production for the adsorption of toluene from paraffin liquid and reducing environmental pollution.
中文翻译：
ZnCl2活化的微孔碳的应用和性质：吸附行为和活化机理。
在此，通过ZnCl 2活化来制备聚吡咯基多孔碳（PPC），以从石蜡液体中吸附甲苯。通过活化剂的用量和碳化温度来调节结构性能。ZnCl2 / PPy的质量比为3：1的结果在600°C时显示出最大的微孔面积和微孔体积百分比分别为1105 m2 / g和86.26％。另外，PPC表面富含官能团，并获得7.00至8.82％的高N掺杂含量。全面研究了甲苯在PPC上的吸附行为，包括等温线，动力学和热力学。吸附等温线符合Freundlich模型，动力学模型更符合拟二级化学吸附。热力学研究发现，吸附本质上是自发的并且是吸热过程。最后根据TG / TGA曲线和孔结构分析讨论了ZnCl2的活化机理。本发明设计的合成微孔碳的方法绿色环保，简便易行，适用于从石蜡液体中吸附甲苯，减少环境污染的大规模生产。
更新日期：2020-04-23
中文翻译：
ZnCl2活化的微孔碳的应用和性质：吸附行为和活化机理。
在此，通过ZnCl 2活化来制备聚吡咯基多孔碳（PPC），以从石蜡液体中吸附甲苯。通过活化剂的用量和碳化温度来调节结构性能。ZnCl2 / PPy的质量比为3：1的结果在600°C时显示出最大的微孔面积和微孔体积百分比分别为1105 m2 / g和86.26％。另外，PPC表面富含官能团，并获得7.00至8.82％的高N掺杂含量。全面研究了甲苯在PPC上的吸附行为，包括等温线，动力学和热力学。吸附等温线符合Freundlich模型，动力学模型更符合拟二级化学吸附。热力学研究发现，吸附本质上是自发的并且是吸热过程。最后根据TG / TGA曲线和孔结构分析讨论了ZnCl2的活化机理。本发明设计的合成微孔碳的方法绿色环保，简便易行，适用于从石蜡液体中吸附甲苯，减少环境污染的大规模生产。
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