Inverse Adsorption Separation of CO2/C2H2 Mixture in Cyclodextrin-Based Metal-Organic Frameworks

被引：148

作者：

Li, Liangying ^{[1
]}

Wang, Jiawei ^{[1
]}

Zhang, Zhiguo ^{[1
]}

Yang, Qiwei ^{[1
]}

Yang, Yiwen ^{[1
]}

Su, Baogen ^{[1
]}

Bao, Zongbi ^{[1
]}

Ren, Qilong ^{[1
]}

机构：

[1] Zhejiang Univ, Coll Chem & Biol Engn, Key Lab Biomass Chem Engn, Minist Educ, Hangzhou 310027, Zhejiang, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2019年 / 11卷 / 02期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

metal-organic frameworks; adsorption separation; carbon dioxide; acetylene; cyclodextrin; CARBON-DIOXIDE; SELECTIVE ADSORPTION; CD-MOF; CO2; C2H2/CO2; ACETYLENE; SITES; THERMODYNAMICS; KINETICS; ETHYLENE;

D O I：

10.1021/acsami.8b19590

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The demand for CO2/C2H2 separation, especially the removal of CO2 impurity, continues to grow because of the high-purity C2H2 required for various industrial applications. The adsorption separation of C2H2 and CO2 via porous materials is gaining a considerable attention as it is more energy-efficient compared with cryogenic distillation. The ideal porous materials are those that preferentially adsorb CO2 over C2H2; however, very few adsorbents meet such requirement. Herein, two isostructural cyclodextrin-based CD-MOFs (CD-MOF-1 and CD-MOF-2) were demonstrated to have an inverse ability to selectively capture CO2 from C2H2 by single-component adsorption isotherms and dynamic breakthrough experiments. These two MOFs showed excellent adsorption capacity and benchmark selectivity (118.7) for CO2/C2H2 mixture at room temperature, enabling the pure C2H2 to be obtained in only one step. This work revealed that these materials were promising adsorbents for obtaining high-purity C2H2 via selectively capturing CO2 from C2H2.

引用

页码：2543 / 2550

页数：8

共 48 条

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