دورية
Metal–Organic Framework with Space-Partition Pores by Fluorinated Anions for Benchmark C2H2/CO2Separation
| العنوان: | Metal–Organic Framework with Space-Partition Pores by Fluorinated Anions for Benchmark C2H2/CO2Separation |
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| المؤلفون: | Zhang, Yuanbin, Han, Yan, Luan, Binquan, Wang, Lingyao, Yang, Wenlei, Jiang, Yunjia, Ben, Teng, He, Yabing, Chen, Banglin |
| المصدر: | Journal of the American Chemical Society; June 2024, Vol. 146 Issue: 25 p17220-17229, 10p |
| مستخلص: | The efficient separation of C2H2from C2H2/CO2or C2H2/CO2/CH4mixtures is crucial for achieving high-purity C2H2(>99%), essential in producing contemporary commodity chemicals. In this report, we present ZNU-12, a metal–organic framework with space-partitioned pores formed by inorganic fluorinated anions, for highly efficient C2H2/CO2and C2H2/CO2/CH4separation. The framework, partitioned by fluorinated SiF62–anions into three distinct cages, enables both a high C2H2capacity (176.5 cm3/g at 298 K and 1.0 bar) and outstanding C2H2selectivity over CO2(13.4) and CH4(233.5) simultaneously. Notably, we achieve a record-high C2H2productivity (132.7, 105.9, 98.8, and 80.0 L/kg with 99.5% purity) from C2H2/CO2(v/v = 50/50) and C2H2/CO2/CH4(v/v = 1/1/1, 1/1/2, or 1/1/8) mixtures through a cycle of adsorption–desorption breakthrough experiments with high recovery rates. Theoretical calculations suggest the presence of potent “2 + 2” collaborative hydrogen bonds between C2H2and two hexafluorosilicate (SiF62–) anions in the confined cavities. |
| قاعدة البيانات: | Supplemental Index |
Find this issue from the American Chemical Society | تدمد: | 00027863 15205126 |
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| DOI: | 10.1021/jacs.4c03442 |