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A platform for research: civil engineering, architecture and urbanism
Characterisation of MOF Materials by Thermomechanical Methods
Metal Organic Frameworks (MOFs) are porous materials made of inorganic clusters coordinated by organic linkers. These materials are mainly used as adsorbents for either gas or liquid separation. Some of them show spectacular changes of structure that may be evidenced by mechanical stress. We developed an experimental device which was placed in a microcalorimeter allowing both the measurement of heat and work during compression/decompression cycles of the material in the presence of a suited liquid. A clear step in the volume/pressure curve can be interpreted as the large pore-to-narrow pore transition of MIL-53 (Al) under the effect of pressure. The pressure induces a reversible transition with hysteresis. The internal energy balance can be calculated from the mechanical work and the heat involved. This constitutes the first direct measurement of the energy associated with the transition. This particular property of MOFs could be also used to store mechanical energy
Characterisation of MOF Materials by Thermomechanical Methods
Metal Organic Frameworks (MOFs) are porous materials made of inorganic clusters coordinated by organic linkers. These materials are mainly used as adsorbents for either gas or liquid separation. Some of them show spectacular changes of structure that may be evidenced by mechanical stress. We developed an experimental device which was placed in a microcalorimeter allowing both the measurement of heat and work during compression/decompression cycles of the material in the presence of a suited liquid. A clear step in the volume/pressure curve can be interpreted as the large pore-to-narrow pore transition of MIL-53 (Al) under the effect of pressure. The pressure induces a reversible transition with hysteresis. The internal energy balance can be calculated from the mechanical work and the heat involved. This constitutes the first direct measurement of the energy associated with the transition. This particular property of MOFs could be also used to store mechanical energy
Characterisation of MOF Materials by Thermomechanical Methods
Beurroies, Isabelle (author) / Denoyel, Renaud (author) / Kuchta, Bogdan (author) / Llewellyn, Philip (author) / Serre, Christian (author)
Fifth Biot Conference on Poromechanics ; 2013 ; Vienna, Austria
Poromechanics V ; 641-647
2013-06-18
Conference paper
Electronic Resource
English
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