| Autor: |
Yang Chen, Yong Wang, Puxu Liu, Xiaoqing Wang, Libo Li, Jiangfeng Yang, Jinping Li |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Chinese Journal of Chemical Engineering. 42:35-41 |
| ISSN: |
1004-9541 |
| DOI: |
10.1016/j.cjche.2021.07.027 |
| Popis: |
Direct separation of high purity ethylene (C2H4) from an ethane (C2H6)/ethylene mixture is a critical and challenging task owing to the very similar molecular size and physical properties of the two components. While some studies have attempted this separation, there is a lack of excellent porous materials with strong binding affinity for C2H6-selective adsorption via an energy-efficient adsorptive separation process. Herein, we report a titanium metal-organic framework with strong binding affinity and excellent stability for the highly efficient removal of C2H6 from C2H6/C2H4 mixtures. Single component adsorption isotherms demonstrated a larger amount of adsorbed ethane (1.16 mmol·g−1 under 1 kPa) and high C2H6/C2H4 selectivity (2.7) for equimolar C2H6/C2H4 mixtures, especially in the low-pressure range, which is further confirmed by the results of grand canonical Monte Carlo simulations for C2H6 adsorption in this framework. The experimental breakthrough curves showed that C2H4 with a high purity was collected directly from both 1:9 and 1:15 C2H6/C2H4 (volume ratio) mixtures at 298 K and 100 kPa. Moreover, the unchanged adsorption and separation performance after cycling experiments confirmed the promising applicability of this material in future. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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