Dimeric Calix[4]resorcinarene-based Porous Organic Cages for CO2/CH4 Separation
Miao Yang , Wenjing Wang , Kongzhao Su , Daqiang Yuan
Chemical Research in Chinese Universities ›› 2022, Vol. 38 ›› Issue (2) : 428 -432.
Dimeric Calix[4]resorcinarene-based Porous Organic Cages for CO2/CH4 Separation
Investigating gas separation by emerging porous organic cage(POC) solids is still on its initial stage. In this work, two novel [2+4] organic cages with distinguished structures have been prepared based on the Schiff-based condensation reaction between tetraformyl-functionalized calix[4]resorcinarene building blocks and xylylenediamine(XDA) isomers. Specifically, the use of para-position XDA affords lantern-shaped cage(CPOC-105) with a medium cavity of ca. 0.526 nm3, while the meta-position produces peanut-shaped structure(CPOC-106) with two small cavities of ca. 0.181 nm3. Both CPOC-105 and CPOC-106 exhibit high selectivity capture of CO2 over CH4 with calculated selectivity coefficients of 4.5 and 3.1, respectively, under ambient conditions, and are capable of separating CO2/CH4 mixtures by fixed-bed column breakthrough experiments.
Porous organic cage / Calix[4]resorcinarene / Self-assembly / Gas separation / Host-guest interaction
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| [2] |
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| [4] |
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| [5] |
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| [6] |
|
| [7] |
|
| [8] |
|
| [9] |
|
| [10] |
|
| [11] |
|
| [12] |
|
| [13] |
|
| [14] |
|
| [15] |
|
| [16] |
|
| [17] |
|
| [18] |
|
| [19] |
|
| [20] |
|
| [21] |
|
| [22] |
|
| [23] |
|
| [24] |
|
| [25] |
|
| [26] |
|
| [27] |
|
| [28] |
|
| [29] |
|
| [30] |
|
| [31] |
|
| [32] |
|
| [33] |
|
| [34] |
|
| [35] |
|
| [36] |
|
| [37] |
|
| [38] |
|
| [39] |
|
| [40] |
|
| [41] |
|
| [42] |
|
| [43] |
|
| [44] |
|
| [45] |
|
| [46] |
|
| [47] |
|
| [48] |
|
| [49] |
|
| [50] |
|
| [51] |
|
| [52] |
|
| [53] |
|
| [54] |
|
| [55] |
|
| [56] |
|
| [57] |
|
| [58] |
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