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Balderas-Xicohténcatl R, Lin HH, Lurz C, Daemen L, Cheng Y, Cychosz Struckhoff K, Guillet-Nicolas R, Schütz G, Heine T, Ramirez-Cuesta AJ, Thommes M, Hirscher M. Formation of a super-dense hydrogen monolayer on mesoporous silica. Nat Chem 2022; 14:1319-1324. [PMID: 36038772 DOI: 10.1038/s41557-022-01019-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 07/06/2022] [Indexed: 11/09/2022]
Abstract
Adsorption on various adsorbents of hydrogen and helium at temperatures close to their boiling points shows, in some cases, unusually high monolayer capacities. The microscopic nature of these adsorbate phases at low temperatures has, however, remained challenging to characterize. Here, using high-resolution cryo-adsorption studies together with characterization by inelastic neutron scattering vibration spectroscopy, we show that, near its boiling point (~20 K), H2 adsorbed on a well-ordered mesoporous silica forms a two-dimensional monolayer with a density more than twice that of bulk-solid H2, rather than a bilayer. Theoretical studies, based on thorough first-principles calculations, rationalize the formation of such a super-dense phase. The strong compression of the hydrogen surface layer is due to the excess of surface-hydrogen attraction over intermolecular hydrogen repulsion. Use of this super-dense hydrogen monolayer on an adsorbent might be a feasible option for the storage of hydrogen near its boiling point, compared with adsorption at 77 K.
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Affiliation(s)
- Rafael Balderas-Xicohténcatl
- Max Planck Institute for Intelligent Systems, Stuttgart, Germany. .,Neutron Scattering Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, TN, USA.
| | - Hung-Hsuan Lin
- Helmholtz Center Dresden-Rossendorf, Institute of Resource Ecology, Leipzig Branch, Leipzig, Germany
| | - Christian Lurz
- Helmholtz Center Dresden-Rossendorf, Institute of Resource Ecology, Leipzig Branch, Leipzig, Germany
| | - Luke Daemen
- Neutron Scattering Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - Yongqiang Cheng
- Neutron Scattering Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | | | - Remy Guillet-Nicolas
- Laboratoire Catalyse et Spectrochemiem, Normandie University, ENSICAEN, CNRS, Caen, France
| | - Gisela Schütz
- Max Planck Institute for Intelligent Systems, Stuttgart, Germany
| | - Thomas Heine
- Helmholtz Center Dresden-Rossendorf, Institute of Resource Ecology, Leipzig Branch, Leipzig, Germany.,School of Mathematics and Science, TU Dresden, Dresden, Germany.,Department of Chemistry, Yonsei University, Seodaemun-gu, Seoul, Republic of Korea
| | - Anibal J Ramirez-Cuesta
- Neutron Scattering Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - Matthias Thommes
- Institute of Separation Science and Technology, Department of Chemical and Biological Engineering (CBI), Friedrich-Alexander University, Erlangen, Germany
| | - Michael Hirscher
- Max Planck Institute for Intelligent Systems, Stuttgart, Germany.
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Heidberg J, Dierkes W, Schönekäs O, Schwarte R. The induced infrared spectrum of H2 Adsorbed on NaCl film at 8 K. Rotation of ortho-H2 in the state J = 1 on the surface. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19940980121] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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3
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Mao WL, Mao HK, Goncharov AF, Struzhkin VV, Guo Q, Hu J, Shu J, Hemley RJ, Somayazulu M, Zhao Y. Hydrogen clusters in clathrate hydrate. Science 2002; 297:2247-9. [PMID: 12351785 DOI: 10.1126/science.1075394] [Citation(s) in RCA: 386] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
High-pressure Raman, infrared, x-ray, and neutron studies show that H2 and H2O mixtures crystallize into the sII clathrate structure with an approximate H2/H2O molar ratio of 1:2. The clathrate cages are multiply occupied, with a cluster of two H2 molecules in the small cage and four in the large cage. Substantial softening and splitting of hydrogen vibrons indicate increased intermolecular interactions. The quenched clathrate is stable up to 145 kelvin at ambient pressure. Retention of hydrogen at such high temperatures could help its condensation in planetary nebulae and may play a key role in the evolution of icy bodies.
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Affiliation(s)
- Wendy L Mao
- Department of the Geophysical Sciences, University of Chicago, Chicago, IL 60637, USA.
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Huber TE, Scardino D, Tsou HL. Temperature-dependent adsorption of hydrogen, deuterium, and neon on porous Vycor glass. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:11372-11379. [PMID: 9980243 DOI: 10.1103/physrevb.52.11372] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Torii RH, Maris HJ, Seidel GM. Heat capacity and torsional oscillator studies of molecular hydrogen in porous Vycor glass. PHYSICAL REVIEW. B, CONDENSED MATTER 1990; 41:7167-7181. [PMID: 9992977 DOI: 10.1103/physrevb.41.7167] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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