An Ultramicroporous Hydrogen‐Bonded Organic Framework Exhibiting High C2H2/CO2Separation

• DOI: 10.1002/anie.202207579
• Publication Date: 2022-07-14T09:39:59Z
• Authors: Yisi Yang; Hao Zhang; Zhen Yuan; Jia‐Qi Wang; Fahui Xiang; Liangji Chen; Fangfang Wei; Shengchang Xiang; Banglin Chen; Zhangjing Zhang
• Keywords: Acetylene; Crystal (programming language)

The separation of C2 H2 /CO2 is not only industrially important for acetylene purification but also great scientific challenge due to their very similar molecular size and physical properties. To address this difficulty, herein, we present an ultramicroporous hydrogen-bonded organic framework (HOF-FJU-1) from tetracyano bicarbazole separate CO2 by taking advantage differences in electrostatic potential distribution. This material possesses a suitable pore environment distribution fitting well , thus showing extra strong affinity (46.73 kJ mol-1 ) the highest IAST selectivity 6675 among adsorbents reported. single crystal X-ray diffraction reveals that HOF-FJU-1 provides multiple C-H⋅⋅⋅π interactions N⋅⋅⋅H-C with molecules. Dynamic breakthrough experiments demonstrate its outstanding performance mixtures.