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Herein, we strategically leverage the coordination modes of aliphatic ligands to significantly enhance C\n                    <jats:sub>2<\/jats:sub>\n                    H\n                    <jats:sub>2<\/jats:sub>\n                    \/CO\n                    <jats:sub>2<\/jats:sub>\n                    separation performance. The structure flexibility and pore metrics are finely modulated by hydroxylated aliphatic acid (DLmal). As a result, the rigid Zn\u2010bpy\u2010DLmal exhibits an exceptional C\n                    <jats:sub>2<\/jats:sub>\n                    H\n                    <jats:sub>2<\/jats:sub>\n                    adsorption capacity of 1.4\u00a0mmol g\n                    <jats:sup>\u22121<\/jats:sup>\n                    at 0.01\u00a0bar, high C\n                    <jats:sub>2<\/jats:sub>\n                    H\n                    <jats:sub>2<\/jats:sub>\n                    \/CO\n                    <jats:sub>2<\/jats:sub>\n                    selectivity (49), and moderate C\n                    <jats:sub>2<\/jats:sub>\n                    H\n                    <jats:sub>2<\/jats:sub>\n                    <jats:italic>Q<\/jats:italic>\n                    <jats:sub>st<\/jats:sub>\n                    value (38.4\u00a0kJ mol\n                    <jats:sup>\u22121<\/jats:sup>\n                    ). Notably, it achieves record\u2010high C\n                    <jats:sub>2<\/jats:sub>\n                    H\n                    <jats:sub>2<\/jats:sub>\n                    packing densities of 347\u00a0g L\n                    <jats:sup>\u22121<\/jats:sup>\n                    at 0.01\u00a0bar and 747\u00a0g L\n                    <jats:sup>\u22121<\/jats:sup>\n                    at 0.5\u00a0bar. Furthermore, the scale\u2010up production of Zn\u2010bpy\u2010DLmal to kilogram quantities has been successfully achieved at an estimated cost of $74 per kilogram. Dynamic breakthrough experiments confirm its practical C\n                    <jats:sub>2<\/jats:sub>\n                    H\n                    <jats:sub>2<\/jats:sub>\n                    \/CO\n                    <jats:sub>2<\/jats:sub>\n                    separation performance with excellent cyclability under high flow rates and both dry and humid conditions. Moreover, two\u2010bed pressure swing adsorption simulations demonstrate a high\u2010purity C\n                    <jats:sub>2<\/jats:sub>\n                    H\n                    <jats:sub>2<\/jats:sub>\n                    (&gt;99%) yield of 14.64\u00a0mol with a recovery of 88.2% per cycle.\n                  <\/jats:p>","DOI":"10.1002\/anie.202503317","type":"journal-article","created":{"date-parts":[[2025,3,26]],"date-time":"2025-03-26T23:22:42Z","timestamp":1743031362000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":34,"title":["A Rigid, Stable, and Scalable Aliphatic MOF Adsorbent for Efficient C\n                    <sub>2<\/sub>\n                    H\n                    <sub>2<\/sub>\n                    \/CO\n                    <sub>2<\/sub>\n                    Separation with Record Acetylene Packing Density"],"prefix":"10.1002","volume":"64","author":[{"given":"Shuangqing","family":"Shang","sequence":"first","affiliation":[{"name":"School of Chemistry and Chemical Engineering Nanchang University  Nanchang 330031 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhenwei","family":"Zhou","sequence":"additional","affiliation":[{"name":"School of Chemistry and Chemical Engineering Nanchang University  Nanchang 330031 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hao","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Chemistry and Chemical Engineering Nanchang University  Nanchang 330031 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yanan","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Chemistry and Chemical Engineering Nanchang University  Nanchang 330031 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