期刊
NATURE COMMUNICATIONS
卷 10, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41467-019-12752-y
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资金
- Charles University Centre of Advanced Materials (CUCAM) (OP VVV Excellent Research Teams) [CZ.02.1.01/0.0/0.0/15_003/0000417]
- Czech Science Foundation [19-21534 S]
- Ministry of Education, Youth and Sports from the Large Infrastructures for Research, Experimental Development and Innovations project IT4Innovations National Supercomputing Center [LM2015070]
- EPSRC
- BBSRC [PR140003]
- University of Warwick
- Advantage West Midlands (AWM)
- European Regional Development Fund (ERDF)
- ERC (EU) [614290, 787073]
- Royal Society
- Wolfson Foundation
- EPSRC [EP/N509759/1, EP/N50936X/1]
- Birmingham Science City Advanced Materials Project 1
- Birmingham Science City Advanced Materials Project 2
- EPSRC [1949783] Funding Source: UKRI
- European Research Council (ERC) [614290, 787073] Funding Source: European Research Council (ERC)
Aluminosilicate zeolites are traditionally used in high-temperature applications at low water vapour pressures where the zeolite framework is generally considered to be stable and static. Increasingly, zeolites are being considered for applications under milder aqueous conditions. However, it has not yet been established how neutral liquid water at mild conditions affects the stability of the zeolite framework. Here, we show that covalent bonds in the zeolite chabazite (CHA) are labile when in contact with neutral liquid water, which leads to partial but fully reversible hydrolysis without framework degradation. We present ab initio calculations that predict novel, energetically viable reaction mechanisms by which Al-O and Si-O bonds rapidly and reversibly break at 300 K. By means of solid-state NMR, we confirm this prediction, demonstrating that isotopic substitution of (17)O( )in the zeolitic framework occurs at room temperature in less than one hour of contact with enriched water.
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