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A multi-dimensional quasi-zeolite with 12 × 10 × 7-ring channels demonstrates high thermal stability and good gas adsorption selectivity

A novel quasi-zeolite PKU-15, with a rare 3-dimensional structure containing interconnected large (12-ring), medium (10-ring) and small (7-ring) multi-pore channels, was hydrothermally synthesised and characterised. A unique tri-bridging O(2–) anion is found to be encapsulated in the cage-like (Ge,S...

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Autores principales: Liang, Jie, Xia, Wei, Sun, Junliang, Su, Jie, Dou, Maofeng, Zou, Ruqiang, Liao, Fuhui, Wang, Yingxia, Lin, Jianhua
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Royal Society of Chemistry 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6005135/
https://www.ncbi.nlm.nih.gov/pubmed/29997792
http://dx.doi.org/10.1039/c5sc04916d
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author Liang, Jie
Xia, Wei
Sun, Junliang
Su, Jie
Dou, Maofeng
Zou, Ruqiang
Liao, Fuhui
Wang, Yingxia
Lin, Jianhua
author_facet Liang, Jie
Xia, Wei
Sun, Junliang
Su, Jie
Dou, Maofeng
Zou, Ruqiang
Liao, Fuhui
Wang, Yingxia
Lin, Jianhua
author_sort Liang, Jie
collection PubMed
description A novel quasi-zeolite PKU-15, with a rare 3-dimensional structure containing interconnected large (12-ring), medium (10-ring) and small (7-ring) multi-pore channels, was hydrothermally synthesised and characterised. A unique tri-bridging O(2–) anion is found to be encapsulated in the cage-like (Ge,Si)(12)O(31) building unit and energetically stabilises the PKU-15 framework. The removal of this oxygen atom would convert PKU-15 into a hypothetical zeolite PKU-15H. Thus, PKU-15 can be considered as a unique ‘quasi-zeolite’, which bridges porous germanates and zeolites. Owing to the absence of terminal Ge–OH groups in its structure, PKU-15 shows a remarkably high thermal stability of up to 600 °C. PKU-15 is also the first microporous germanate that exhibits permanent porosity, with a BET area of 428 m(2) g(–1) and a good adsorption affinity toward CO(2).
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spelling pubmed-60051352018-07-11 A multi-dimensional quasi-zeolite with 12 × 10 × 7-ring channels demonstrates high thermal stability and good gas adsorption selectivity Liang, Jie Xia, Wei Sun, Junliang Su, Jie Dou, Maofeng Zou, Ruqiang Liao, Fuhui Wang, Yingxia Lin, Jianhua Chem Sci Chemistry A novel quasi-zeolite PKU-15, with a rare 3-dimensional structure containing interconnected large (12-ring), medium (10-ring) and small (7-ring) multi-pore channels, was hydrothermally synthesised and characterised. A unique tri-bridging O(2–) anion is found to be encapsulated in the cage-like (Ge,Si)(12)O(31) building unit and energetically stabilises the PKU-15 framework. The removal of this oxygen atom would convert PKU-15 into a hypothetical zeolite PKU-15H. Thus, PKU-15 can be considered as a unique ‘quasi-zeolite’, which bridges porous germanates and zeolites. Owing to the absence of terminal Ge–OH groups in its structure, PKU-15 shows a remarkably high thermal stability of up to 600 °C. PKU-15 is also the first microporous germanate that exhibits permanent porosity, with a BET area of 428 m(2) g(–1) and a good adsorption affinity toward CO(2). Royal Society of Chemistry 2016-05-01 2016-01-25 /pmc/articles/PMC6005135/ /pubmed/29997792 http://dx.doi.org/10.1039/c5sc04916d Text en This journal is © The Royal Society of Chemistry 2016 http://creativecommons.org/licenses/by-nc/3.0/ This article is freely available. This article is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported Licence (CC BY-NC 3.0)
spellingShingle Chemistry
Liang, Jie
Xia, Wei
Sun, Junliang
Su, Jie
Dou, Maofeng
Zou, Ruqiang
Liao, Fuhui
Wang, Yingxia
Lin, Jianhua
A multi-dimensional quasi-zeolite with 12 × 10 × 7-ring channels demonstrates high thermal stability and good gas adsorption selectivity
title A multi-dimensional quasi-zeolite with 12 × 10 × 7-ring channels demonstrates high thermal stability and good gas adsorption selectivity
title_full A multi-dimensional quasi-zeolite with 12 × 10 × 7-ring channels demonstrates high thermal stability and good gas adsorption selectivity
title_fullStr A multi-dimensional quasi-zeolite with 12 × 10 × 7-ring channels demonstrates high thermal stability and good gas adsorption selectivity
title_full_unstemmed A multi-dimensional quasi-zeolite with 12 × 10 × 7-ring channels demonstrates high thermal stability and good gas adsorption selectivity
title_short A multi-dimensional quasi-zeolite with 12 × 10 × 7-ring channels demonstrates high thermal stability and good gas adsorption selectivity
title_sort multi-dimensional quasi-zeolite with 12 × 10 × 7-ring channels demonstrates high thermal stability and good gas adsorption selectivity
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6005135/
https://www.ncbi.nlm.nih.gov/pubmed/29997792
http://dx.doi.org/10.1039/c5sc04916d
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