Interplay of Metalloligand and Organic Ligand to Tune Micropores within Isostructural Mixed-Metal Organic Frameworks (M鈥睲OFs) for Their Highly Selective Separation of Chiral and Achiral Small Molecule

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• 作者：Madhab C. Das ; Qunsheng Guo ; Yabing He ; Jaheon Kim ; Cong-Gui Zhao ; Kunlun Hong ; Shengchang Xiang ; Zhangjing Zhang ; K. Mark Thomas ; Rajamani Krishna ; Banglin Chen
• 刊名：The Journal of the American Chemical Society
• 出版年：2012
• 出版时间：May 23, 2012
• 年：2012
• 卷：134
• 期：20
• 页码：8703-8710
• 全文大小：516K
• 年卷期：v.134,no.20(May 23, 2012)
• ISSN：1520-5126

文摘

Four porous isostructural mixed-metal鈥搊rganic frameworks (M鈥睲OFs) have been synthesized and structurally characterized. The pores within these M鈥睲OFs are systematically tuned by the interplay of both the metalloligands and organic ligands which have enabled us not only to direct their highly selective separation of chiral alcohols 1-phenylethanol (PEA), 2-butanol (BUT), and 2-pentanol (2-PEN) with the highest ee up to 82.4% but also to lead highly selective separation of achiral C₂H₂/C₂H₄ separation. The potential application of these M鈥睲OFs for the fixed bed pressure swing adsorption (PSA) separation of C₂H₂/C₂H₄ has been further examined and compared by the transient breakthrough simulations in which the purity requirement of 40 ppm in the outlet gas can be readily fulfilled by the fixed bed M鈥睲OF-4a adsorber at ambient conditions.