Dynamics of molecular hydrogen in the strong spatial confinement of microporous carbons
This proposal aims at studying the diffusion of molecular hydrogen (H2) and the ortho- to para-H2 transition in strong spatial confinement in a nanoporous carbon with sub-nm pore sizes particularly from low cryogenic temperatures up to temperatures of technical relevance, i.e., 2-100 K. Diffusion dynamics of solid-like ortho-hydrogen confined in these narrow pores will be studied on the high resolution IN16B backscattering spectrometer at five temperatures (20, 50, 77 and 100 K) and different H2 pressures (corresponding to different loadings). The para-to-ortho transition line has a three-fold degeneracy which is lifted as a function of the local symmetry of the adsorption site, with line-shifts that are dependent on the intensity of the interaction between the H2 molecule and the host surface. These interactions can be studied using inelastic neutron scattering at the PANTHER instrument. The combination of quasi-elastic neutron scattering (QENS), INS, gas adsorption analysis and carbon structure modeling will help to identify the role of H2 confinement and diffusional properties in nanopores
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The recommended format for citing this dataset in a research publication is in the following format:
STOCK Sebastian; APPEL Markus; KOSTOGLOU Nikolaos; PARIS Oskar; RAUSCHER Max Valentin; ROLS Stephane and SEYFFERTITZ Malina. (2023). Dynamics of molecular hydrogen in the strong spatial confinement of microporous carbons. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.6-07-102
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This data is not yet public
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