Inverse Adsorption Separation of CO2/C2H2 Mixture in Cyclodextrin-Based Metal–Organic Frameworks
| Autor: | Yiwen Yang, Baogen Su, Zhiguo Zhang, Qiwei Yang, Qilong Ren, Liangying Li, Zongbi Bao, Jiawei Wang |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
Air separation Materials science Cyclodextrin One-Step 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Adsorption Chemical engineering chemistry Impurity General Materials Science Metal-organic framework 0210 nano-technology Porous medium Selectivity |
| Zdroj: | ACS Applied Materials & Interfaces. 11:2543-2550 |
| ISSN: | 1944-8252 1944-8244 |
| Popis: | 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 ... |
| Databáze: | OpenAIRE |
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