Abstract
Adsorption of hydrogen and the occupancy of different binding sites as a function of hydrogen loading in MOF-74 are studied using inelastic neutron scattering (INS). Hydrogen molecules are observed to fully occupy the strongest binding site before populating other adsorption sites. The comparison of the INS spectra at 4 K and 60 K indicates that hydrogen adsorbed at the strongest binding site is strongly bound and localized. We also show that when two hydrogen molecules are adsorbed into a single, attractive potential well, the shortest inter-H2 distance is about 3 Å, consistent with our previous observation of inter-H2 distance when adsorbed in two neighboring potential wells.
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References
R. Chahine,P. Benard, In Advance in cryogenic engineering; Kittel, P., Ed.; Plenum Press: New York, 1998; Vol. 34, p 1257.
A. G. Wong-Foy, A. J. Matzger, O. M. Yaghi, J. Am. Chem. Soc. 128, 3494–3495 (2006).
H. Kabbour, T. F. Baumann, J. H. Satcher, Jr., A. Saulnier, C. C. Ahn, Chem. Mater. 18, 6085–6087 (2006).
M. Dincă, A. Dailly, Y. Liu, C. M. Brown, D. A. Neumann, J. R. Long, J. Am. Chem. Soc. 128, 16876–16883 (2006).
M. Dincă, W. S. Han, Y. Liu, A. Dailly, C. M. Brown, J. R. Long, Angew. Chem. Int. Ed. 46, 1419–1422 (2007).
V. K. Peterson, Y. Liu, C. M. Brown, C. J. Kepert, J. Am. Chem. Soc. 128, 15578–15579 (2006).
Y. Liu, H. Kabbour, C. M. Brown, D. A. Neumann, C. C. Ahn, submitted (2007).
N. L. Rosi, J. Kim, M. Eddaoudi, B. Chen, M. O’Keeffe, O. M. Yaghi, J. Am. Chem. Soc. 127, 1504–1518 (2005).
Rowsell, J. L. C., Yaghi, O. M. J. Am. Chem. Soc. 128, 1304–1315 (2006).
Y. Liu, C. M. Brown, D. A. Neumann, V. K. Peterson, C. Kepert, J. of Alloys and Compounds 446-447, 385 (2007).
I. F. Silvera, Rev. Mod. Phys. 52, 393–452 (1980).
J. A. Young, J. U. Koppel, Phys. Rev. 135, A603, (1964).
T. J. Udovic, D. A. Neumann, J. Leao, C. M. Brown, Instrum. Methods A517, 189 (2004).
C. M. Brown et al., Chem. Phys. Lett. 329, 311 (2003).
Y. Liu et al. J. of Alloys and Compounds 446-447, 368 (2007).
S. A. FitzGerald et al., Phys. Rev. B 60, 6439 (1999).
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Liu, Y., Brown, C.M., Neumann, D.A. et al. Hydrogen Adsorption in MOF-74 Studied by Inelastic Neutron Scattering. MRS Online Proceedings Library 1041, 203 (2007). https://doi.org/10.1557/PROC-1041-R02-03
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DOI: https://doi.org/10.1557/PROC-1041-R02-03