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Sorting of C4 Olefins with Interpenetrated Hybrid Ultramicroporous Materials by Combining Molecular Recognition and Size‐Sieving
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2017-10-24 , DOI: 10.1002/anie.201708769
Zhaoqiang Zhang 1 , Qiwei Yang 1 , Xili Cui 1 , Lifeng Yang 1 , Zongbi Bao 1 , Qilong Ren 1 , Huabin Xing 1
Affiliation  

C4 olefin separations present one of the great challenges in hydrocarbon purifications owing to their similar structures, thus a single separation mechanism often met with limited success. Herein we report a series of anion‐pillared interpenetrated copper coordination for which the cavity and functional site disposition can be varied in 0.2 Å scale increments by altering the anion pillars and organic linkers (GeFSIX‐2‐Cu‐i (ZU‐32), NbFSIX‐2‐Cu‐i (ZU‐52), GeFSIX‐14‐Cu‐i (ZU‐33)), which enable selective recognition of different C4 olefins. In these materials the rotation of the organic linkers is controlled to create a contracted flexible pore window that enables the size‐exclusion of specific C4 olefins, while still adsorbing significant amounts of 1,3‐butadiene (C4H6) or 1‐butene (n‐C4H8). Combining the molecular recognition and size‐sieving effect, these materials unexpectedly realized the sieving of C4H6/n‐C4H8, C4H6/iso‐C4H8, and n‐C4H8/iso‐C4H8 with high capacity.

中文翻译:

结合分子识别和粒度筛分的互穿杂化超微孔材料对C4烯烃的分选

由于C 4烯烃的结构相似,因此其分离是烃纯化中的一大挑战,因此,单一分离机制通常只能取得有限的成功。我们在此报告了一系列阴离子桩互穿的铜配位化合物,通过改变阴离子柱和有机连接基(GeFSIX-2-Cu-i(ZU-32),其空腔和功能部位的位置可以0.2Å的增量变化。 NbFSIX-2-Cu-i(ZU-52),GeFSIX-14-Cu-i(ZU-33)),可选择性识别不同的C 4烯烃。在这些材料中,有机连接基的旋转受到控制,以形成收缩的柔性孔窗,从而可以排除特定C 4的尺寸烯烃,同时仍吸附大量的1,3-丁二烯(C 4 H 6)或1-丁烯(n-C 4 H 8)。结合分子识别和筛分效果,这些材料出乎意料地实现了C 4 H 6 / n-C 4 H 8,C 4 H 6 / iso-C 4 H 8和n-C 4 H 8 / iso的筛分‐C 4 H 8高容量。
更新日期:2017-10-24
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