Статья

Hydrogen in the Metal−Organic Framework Cr MIL-53

Fokko M. MulderSection Fundamental Aspects of Materials and Energy, Department of Radiation, Radionuclides and Reactors, Faculty of Applied Sciences, Delft University of Technology, Mekelweg 15, 2629 JB Delft, The Netherlands; Hydrogen Research Institute, Physics Department, Université du Québec à Trois-Rivières, 3351 des Forges, Trois-Rivières (QC) G9A 5H7, Canada; Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 1, 2629 HS Delft, The Netherlands; and ISIS Facility, Rutherford AppletonBassem AssfourSection Fundamental Aspects of Materials and Energy, Department of Radiation, Radionuclides and Reactors, Faculty of Applied Sciences, Delft University of Technology, Mekelweg 15, 2629 JB Delft, The Netherlands; Hydrogen Research Institute, Physics Department, Université du Québec à Trois-Rivières, 3351 des Forges, Trois-Rivières (QC) G9A 5H7, Canada; Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 1, 2629 HS Delft, The Netherlands; and ISIS Facility, Rutherford AppletonJacques HuotSection Fundamental Aspects of Materials and Energy, Department of Radiation, Radionuclides and Reactors, Faculty of Applied Sciences, Delft University of Technology, Mekelweg 15, 2629 JB Delft, The Netherlands; Hydrogen Research Institute, Physics Department, Université du Québec à Trois-Rivières, 3351 des Forges, Trois-Rivières (QC) G9A 5H7, Canada; Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 1, 2629 HS Delft, The Netherlands; and ISIS Facility, Rutherford AppletonTheo J. DingemansSection Fundamental Aspects of Materials and Energy, Department of Radiation, Radionuclides and Reactors, Faculty of Applied Sciences, Delft University of Technology, Mekelweg 15, 2629 JB Delft, The Netherlands; Hydrogen Research Institute, Physics Department, Université du Québec à Trois-Rivières, 3351 des Forges, Trois-Rivières (QC) G9A 5H7, Canada; Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 1, 2629 HS Delft, The Netherlands; and ISIS Facility, Rutherford AppletonMarnix WagemakerSection Fundamental Aspects of Materials and Energy, Department of Radiation, Radionuclides and Reactors, Faculty of Applied Sciences, Delft University of Technology, Mekelweg 15, 2629 JB Delft, The Netherlands; Hydrogen Research Institute, Physics Department, Université du Québec à Trois-Rivières, 3351 des Forges, Trois-Rivières (QC) G9A 5H7, Canada; Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 1, 2629 HS Delft, The Netherlands; and ISIS Facility, Rutherford AppletonAnibal J. Ramirez‐CuestaSection Fundamental Aspects of Materials and Energy, Department of Radiation, Radionuclides and Reactors, Faculty of Applied Sciences, Delft University of Technology, Mekelweg 15, 2629 JB Delft, The Netherlands; Hydrogen Research Institute, Physics Department, Université du Québec à Trois-Rivières, 3351 des Forges, Trois-Rivières (QC) G9A 5H7, Canada; Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 1, 2629 HS Delft, The Netherlands; and ISIS Facility, Rutherford Appleton

2010en

ABI

Аннотация

Practical methods for hydrogen storage are still a major bottleneck in the realization of an energy economy based on hydrogen as an energy carrier.(1) Surface adsorption within crystalline, nanoporous, metal−organic frameworks (MOFs) provides a promising storage method that relies on sufficiently strong adsorption interactions for a large fraction of the storage capacity. Only few MOF structures were studied up to date using neutron diffraction to resolve the adsorption sites.(2-5) Here we use in situ neutron diffraction to characterize hydrogen (deuterium) adsorption sites in the MOF Cr MIL-53. The strongest adsorption interactions are present at three different sites where the hydrogen touches nearby organic linkers from two directions. Perhaps surprisingly, there is no strong direct interaction with the Cr−O cluster. Large breathing modes of the crystalline lattice are observed upon loading hydrogen reversibly to an equivalent of 5.5 wt %. Such breathing modes are known to occur for polar solvents like H2O, alkanes, and also for the gas CO2; however, as shown here it also occurs for weakly van der Waals adsorbed hydrogen molecules.

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Идентификаторы

DOI: 10.1021/jp102463p

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar