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Styrene Purification by Guest-Induced Restructuring of Pillar[6]arene

[Image: see text] The separation of styrene (St) and ethylbenzene (EB) mixtures is important in the chemical industry. Here, we explore the St and EB adsorption selectivity of two pillar-shaped macrocyclic pillar[n]arenes (EtP5 and EtP6; n = 5 and 6). Both crystalline and amorphous EtP6 can capture...

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Autores principales: Jie, Kecheng, Liu, Ming, Zhou, Yujuan, Little, Marc A., Bonakala, Satyanarayana, Chong, Samantha Y., Stephenson, Andrew, Chen, Linjiang, Huang, Feihe, Cooper, Andrew I.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2017
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5360353/
https://www.ncbi.nlm.nih.gov/pubmed/28182420
http://dx.doi.org/10.1021/jacs.6b13300
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author Jie, Kecheng
Liu, Ming
Zhou, Yujuan
Little, Marc A.
Bonakala, Satyanarayana
Chong, Samantha Y.
Stephenson, Andrew
Chen, Linjiang
Huang, Feihe
Cooper, Andrew I.
author_facet Jie, Kecheng
Liu, Ming
Zhou, Yujuan
Little, Marc A.
Bonakala, Satyanarayana
Chong, Samantha Y.
Stephenson, Andrew
Chen, Linjiang
Huang, Feihe
Cooper, Andrew I.
author_sort Jie, Kecheng
collection PubMed
description [Image: see text] The separation of styrene (St) and ethylbenzene (EB) mixtures is important in the chemical industry. Here, we explore the St and EB adsorption selectivity of two pillar-shaped macrocyclic pillar[n]arenes (EtP5 and EtP6; n = 5 and 6). Both crystalline and amorphous EtP6 can capture St from a St-EB mixture with remarkably high selectivity. We show that EtP6 can be used to separate St from a 50:50 v/v St:EB mixture, yielding in a single adsorption cycle St with a purity of >99%. Single-crystal structures, powder X-ray diffraction patterns, and molecular simulations all suggest that this selectivity is due to a guest-induced structural change in EtP6 rather than a simple cavity/pore size effect. This restructuring means that the material “self-heals” upon each recrystallization, and St separation can be carried out over multiple cycles with no loss of performance.
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spelling pubmed-53603532017-03-22 Styrene Purification by Guest-Induced Restructuring of Pillar[6]arene Jie, Kecheng Liu, Ming Zhou, Yujuan Little, Marc A. Bonakala, Satyanarayana Chong, Samantha Y. Stephenson, Andrew Chen, Linjiang Huang, Feihe Cooper, Andrew I. J Am Chem Soc [Image: see text] The separation of styrene (St) and ethylbenzene (EB) mixtures is important in the chemical industry. Here, we explore the St and EB adsorption selectivity of two pillar-shaped macrocyclic pillar[n]arenes (EtP5 and EtP6; n = 5 and 6). Both crystalline and amorphous EtP6 can capture St from a St-EB mixture with remarkably high selectivity. We show that EtP6 can be used to separate St from a 50:50 v/v St:EB mixture, yielding in a single adsorption cycle St with a purity of >99%. Single-crystal structures, powder X-ray diffraction patterns, and molecular simulations all suggest that this selectivity is due to a guest-induced structural change in EtP6 rather than a simple cavity/pore size effect. This restructuring means that the material “self-heals” upon each recrystallization, and St separation can be carried out over multiple cycles with no loss of performance. American Chemical Society 2017-02-09 2017-03-01 /pmc/articles/PMC5360353/ /pubmed/28182420 http://dx.doi.org/10.1021/jacs.6b13300 Text en Copyright © 2017 American Chemical Society This is an open access article published under a Creative Commons Attribution (CC-BY) License (http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html) , which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
spellingShingle Jie, Kecheng
Liu, Ming
Zhou, Yujuan
Little, Marc A.
Bonakala, Satyanarayana
Chong, Samantha Y.
Stephenson, Andrew
Chen, Linjiang
Huang, Feihe
Cooper, Andrew I.
Styrene Purification by Guest-Induced Restructuring of Pillar[6]arene
title Styrene Purification by Guest-Induced Restructuring of Pillar[6]arene
title_full Styrene Purification by Guest-Induced Restructuring of Pillar[6]arene
title_fullStr Styrene Purification by Guest-Induced Restructuring of Pillar[6]arene
title_full_unstemmed Styrene Purification by Guest-Induced Restructuring of Pillar[6]arene
title_short Styrene Purification by Guest-Induced Restructuring of Pillar[6]arene
title_sort styrene purification by guest-induced restructuring of pillar[6]arene
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5360353/
https://www.ncbi.nlm.nih.gov/pubmed/28182420
http://dx.doi.org/10.1021/jacs.6b13300
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