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Herein, a microporous metal\u2013organic framework (<jats:bold>FJI\u2010H38)<\/jats:bold> has been reported, which possesses high\u2010density electronegative O\/N binding sites and appropriate pore size. Notably, at 0.01\u2005bar and 298\u2005K <jats:bold>FJI\u2010H38<\/jats:bold> shows excellent trapping capability for C<jats:sub>2<\/jats:sub>H<jats:sub>2<\/jats:sub> (1.64\u2005mmol\/g) and CO<jats:sub>2<\/jats:sub> (2.33\u2005mmol\/g), while the uptake of C<jats:sub>2<\/jats:sub>H<jats:sub>4<\/jats:sub> is only 0.41\u2005mmol\/g, which endows <jats:bold>FJI\u2010H38<\/jats:bold> high C<jats:sub>2<\/jats:sub>H<jats:sub>2<\/jats:sub>\/C<jats:sub>2<\/jats:sub>H<jats:sub>4<\/jats:sub> and top\u2010level CO<jats:sub>2<\/jats:sub>\/C<jats:sub>2<\/jats:sub>H<jats:sub>4<\/jats:sub> selectivity simultaneously. Polymer\u2010grade C<jats:sub>2<\/jats:sub>H<jats:sub>4<\/jats:sub> (\u226599.95\u2009%) with record\u2010high productivity can be successfully obtained from ternary C<jats:sub>2<\/jats:sub>H<jats:sub>2<\/jats:sub>\/CO<jats:sub>2<\/jats:sub>\/C<jats:sub>2<\/jats:sub>H<jats:sub>4<\/jats:sub> mixture in one step under various conditions. Even at 318\u2005K, the separation performance has no obvious decrease. Such excellent separation performance is due to the adaptive recognition of C<jats:sub>2<\/jats:sub>H<jats:sub>2<\/jats:sub> and CO<jats:sub>2<\/jats:sub> by <jats:bold>FJI\u2010H38<\/jats:bold> through the synergistic effect of appropriate pore size and the match of electrostatic potentials, where C<jats:sub>2<\/jats:sub>H<jats:sub>2<\/jats:sub> and CO<jats:sub>2<\/jats:sub> can be stabilized by the O\/N and aromatic ring sites.<\/jats:p>","DOI":"10.1002\/anie.202423496","type":"journal-article","created":{"date-parts":[[2025,1,18]],"date-time":"2025-01-18T04:14:41Z","timestamp":1737173681000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":29,"title":["One\u2010Step Ethylene Purification from Ternary Mixture through Adaptive Recognition Sites"],"prefix":"10.1002","volume":"64","author":[{"given":"Danhua","family":"Song","sequence":"first","affiliation":[{"name":"State Key Laboratory of Structure Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences  Fuzhou Fujian 350002 P. 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