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A Crystalline Mesoporous Germanate with 48-Ring Channels for CO2 Separation
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK). Peking University, People's Republic of China.
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
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Number of Authors: 9
2015 (English)In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 54, no 25, 7290-7294 p.Article in journal (Refereed) Published
Abstract [en]

One of the challenges in materials science has been to prepare crystalline inorganic compounds with mesopores. Although several design strategies have been developed to address the challenge, expansion of pore sizes in inorganic materials is more difficult compared to that for metal-organic frameworks. Herein, we designed a novel mesoporous germanate PKU-17 with 3D 48 x 16 x 16-ring channels by introducing two large building units (Ge-10 and Ge-7 clusters) into the same framework. The key for this design strategy is the selection of 2-propanolamine (MIPA), which serves as the terminal species to promote the crystallization of Ge-7 clusters. Moreover, it is responsible for the coexistence of Ge-10 and Ge-7 clusters. To our knowledge, the discovery of PKU-17 sets a new record in pore sizes among germanates. It is also the first germanate that exhibits a good selectivity toward CO2 over N-2 and CH4.

Place, publisher, year, edition, pages
2015. Vol. 54, no 25, 7290-7294 p.
Keyword [en]
cluster compounds, gas adsorption, germanates, porous materials, zeolite analogues
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:su:diva-118959DOI: 10.1002/anie.201501718ISI: 000356390300010OAI: oai:DiVA.org:su-118959DiVA: diva2:842733
Available from: 2015-07-22 Created: 2015-07-21 Last updated: 2017-12-04Bibliographically approved

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Liang, JieSu, JieZheng, HaoquanZou, XiaodongSun, Junliang
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