Finely Tuned Porous Coordination Polymers To Boost Methane Separation Efficiency
Finely Tuned Porous Coordination Polymers To Boost Methane Separation Efficiency
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精细调节的多孔配位聚合物可提高甲烷分离效率
DOI：
10.1002/chem.201900781
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
Jin Wanqin
中科院分区：
文献类型：
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作者：
Wang Yang;Dong Qiubing;Cao Haifei;Ji Wei;Duan Jingui;Jing Su;Jin Wanqin
具有高穿透效率和弱主客体相互作用的吸收剂被认为是可行的变压/变容吸附（PSA/VSA）中节能过程的有希望的候选者。在本文中，提出并验证了两组精心设计的基于Fe和Co的多孔配位聚合物（PCP）;这些具有沙漏形纳米通道，通过T形配体与移动的甲基的合作。具有最佳的纳米通道，高静态吸附和相对较低的结合能，这些聚合物之一，命名为NTU-30，能够实现显著的C2 H6/CH 4和C2 H4/CH 4穿透效率，在环境温度下使用1 g样品从相应的混合物中收获约1.0或0.6 g CH 4（100%）。 此外，通过原位IR研究检测和研究了NTU-30中芳香位点的积极作用。
Absorbents with high breakthrough efficiency and weak host–guest interaction are considered to be promising candidates for an energy‐saving process in feasible pressure/volume swing adsorption (PSA/VSA). Herein, two groups of finely designed Fe‐ and Co‐based porous coordination polymers (PCPs) are proposed and validated; these possess hourglass‐shaped nanochannels, through the cooperation of T‐shaped ligands with shifted methyl groups. Featuring optimal nanochannels, high static adsorption, and relatively lower binding energy, one of these polymers, named NTU‐30, enables significant C2H6/CH4and C2H4/CH4breakthrough efficiency, with approximately 1.0 or 0.6 g CH4(100 %) harvested from the corresponding mixtures using 1 g of sample at ambient temperature. Furthermore, the positive effect of aromatic sites within NTU‐30 is detected and investigated through an in situ IR study.