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Xu W, Liu XD, Peña-Alvarez M, Jiang HC, Dalladay-Simpson P, Coasne B, Haines J, Gregoryanz E, Santoro M. High-Pressure Insertion of Dense H 2 into a Model Zeolite. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2021; 125:7511-7517. [PMID: 36158606 PMCID: PMC9490752 DOI: 10.1021/acs.jpcc.1c02177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Our combined high-pressure synchrotron X-ray diffraction and Monte Carlo modeling studies show super-filling of the zeolite, and computational results suggest an occupancy by a maximum of nearly two inserted H2 molecules per framework unit, which is about twice that observed in gas hydrates. Super-filling prevents amorphization of the host material up to at least 60 GPa, which is a record pressure for zeolites and also for any group IV element being in full 4-fold coordination, except for carbon. We find that the inserted H2 forms an exotic topologically constrained glassy-like form, otherwise unattainable in pure hydrogen. Raman spectroscopy on confined H2 shows that the microporosity of the zeolite is retained over the entire investigated pressure range (up to 80 GPa) and that intermolecular interactions share common aspects with bulk hydrogen, while they are also affected by the zeolite framework.
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Affiliation(s)
- Wan Xu
- Key
Laboratory of Materials Physics, Institute of Solid State Physics,
HFIPS, Chinese Academy of Sciences, Hefei 230031, China
- University
of Science and Technology of China, Hefei 230026, China
| | - Xiao-Di Liu
- Key
Laboratory of Materials Physics, Institute of Solid State Physics,
HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - Miriam Peña-Alvarez
- Centre
for Science at Extreme Conditions & The School of Physics and
Astronomy, The University of Edinburgh, Peter Guthrie Tait Road, Edinburgh EH9 3FD, U.K.
| | - Hua-Chao Jiang
- Key
Laboratory of Materials Physics, Institute of Solid State Physics,
HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - Philip Dalladay-Simpson
- Center
for High Pressure Science & Technology Advanced Research, 1690 Cailun Road, Shanghai 201203, China
| | - Benoit Coasne
- Université
Grenoble Alpes, CNRS, LIPhy, Grenoble 38000, France
| | - Julien Haines
- ICGM, CNRS,
Université de Montpellier, ENSCM, Montpellier 34095, France
| | - Eugene Gregoryanz
- Key
Laboratory of Materials Physics, Institute of Solid State Physics,
HFIPS, Chinese Academy of Sciences, Hefei 230031, China
- Centre
for Science at Extreme Conditions & The School of Physics and
Astronomy, The University of Edinburgh, Peter Guthrie Tait Road, Edinburgh EH9 3FD, U.K.
- Center
for High Pressure Science & Technology Advanced Research, 1690 Cailun Road, Shanghai 201203, China
| | - Mario Santoro
- Key
Laboratory of Materials Physics, Institute of Solid State Physics,
HFIPS, Chinese Academy of Sciences, Hefei 230031, China
- Istituto
Nazionale di Ottica (CNR-INO) and European Laboratory for Non Linear
Spectroscopy (LENS), Via N. Carrara 1, Sesto Fiorentino 50019, Italy
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