乙炔
二氧化碳
乙烯
吸附
选择性
化学
化学工程
碳纤维
三元运算
有机化学
杂原子
材料科学
催化作用
戒指(化学)
复合材料
程序设计语言
工程类
复合数
计算机科学
作者
Zhiwei Zhao,Yueyue Liu,Xing Liu,Yuan Liu,Jingwen Chen,Shixia Chen,Qiang Deng,Jun Wang
摘要
Abstract The one‐step adsorptive separation of high‐purity ethylene (C 2 H 4 ) from a ternary gas mixture (C 2 H 2 /C 2 H 4 /CO 2 ) is challenging and has not been reported on porous carbons. Herein, we report camphor seeds husk‐derived ultramicroporous carbons (CSHs) show high affinities toward acetylene (C 2 H 2 ) and carbon dioxide (CO 2 ) over C 2 H 4 . The optimized CSH‐2‐700 with high heteroatom contents and centered pore size distributions shows high C 2 H 2 adsorption capacity (2.24 mmol g −1 ) and record ideal adsorbed solution theory (IAST) C 2 H 2 /C 2 H 4 selectivity (10.2) among one‐step C 2 H 4 purification adsorbents. Meanwhile, CSH carbons are the only carbon adsorbents that preferentially adsorb CO 2 over C 2 H 4 , with a CO 2 /C 2 H 4 selectivity of 1.9 under ambient conditions. Furthermore, dynamic breakthrough experiments verified its feasibility for one‐step C 2 H 4 purification from a three‐component C 2 H 2 /C 2 H 4 /CO 2 gas‐mixture.
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