Wang Jin-Bo, Zhang Tao, Cao Jian-Wei, Yang Rong, Wang Su-Hang, Zhang Xue, Chen Kai-Jie
Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Xi'an Key Laboratory of Functional Organic Porous Materials, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China.
Inorg Chem. 2024 Sep 16;63(37):17298-17304. doi: 10.1021/acs.inorgchem.4c03193. Epub 2024 Sep 5.
Adsorptive ethylene separation from the CH/CH/CH/CO four-component gas mixture provides a low-energy input solution for industrial ethylene purification, yet it is still a great challenge. Herein, we report a facile scaled-up synthesis of a stable ultramicroporous coordination network of Zn-CO-datz (Hdatz = 3,5-diamine-1,2,4-triazole), which enables selective adsorption of CH, CH and CO over CH, thanks to its specific pore environment supported by GCMC simulation of gas adsorption sites. Dynamic breakthrough experiments exhibited efficient one-step production of polymer-grade (≥99.95%) CH from the quaternary CH/CH/CH/CO (1/1/1/1) mixture, with excellent CH productivity of 0.12 mol kg at 298 K. Moreover, it can be easily synthesized in kilogram scale with an affordable and low-cost ligand, rendering its further potential industrial applications.
从CH₄/C₂H₄/C₂H₆/CO四组分气体混合物中吸附分离乙烯为工业乙烯提纯提供了一种低能量输入的解决方案，但这仍然是一个巨大的挑战。在此，我们报道了一种简便的放大合成方法，用于合成稳定的锌-CO-datz超微孔配位网络（Hdatz = 3,5-二氨基-1,2,4-三唑），由于其特定的孔环境（通过气体吸附位点的巨正则蒙特卡罗模拟得到支持），该网络能够实现对C₂H₄、C₂H₆和CO相对于CH₄的选择性吸附。动态突破实验表明，从CH₄/C₂H₄/C₂H₆/CO（1/1/1/1）四元混合物中能够高效一步生产出聚合物级（≥99.95%）的C₂H₄，在298 K时C₂H₄的生产率高达0.12 mol kg⁻¹。此外，它可以使用价格合理的低成本配体轻松地以千克规模合成，这使其具有进一步潜在的工业应用价值。
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