Abstracts Book - IMRC 2018

• SC7-O001 Invited Talk
OVERSOLUBILITY EFFECTS IN NANOCONFINED SOLVENTS
Linh Ngoc Ho 1 , David Farrusseng 1 , Benoit Coasne 2
1 CNRS, IRCELYON, France. 2 CNRS, Laboratoire Interdisciplinaire de Physique, France.
Oversolubility arises when confinement of a liquid in a porous material leads to
large amounts of solubilized gases. 1,2,3 Such an effect is observed when the gas
solubility in a confined liquid is larger than that for the bulk liquid (the latter
usually follows Henry’s law stating that the concentration of solubilized gas is
proportional to the gas pressure above the liquid). Oversolubility is expected to
drastically modify the confinement and transport properties in porous materials
with potential beneficial or detrimental effects for adsorption, filtration and
catalysis processes as well as applications relying on porous media as efficient
diffusion barriers.
Here, we report an experimental and molecular simulation study on the effect
of oversolubility on the confinement and transport in porous materials including
Metal Organic Frameworks. Understanding such effects is a key-step to design
efficient catalysts with improved processes but also confining media for
gas/energy storage. We will show that such gas oversolubility pertains either to
an adsorption-driven oversolubility effect or a bulk-like enhanced oversolubility.
References:
[1] S. Clauzier, L. Ngoc Ho, M. Pera-Titus, B. Coasne, D. Farrusseng, Enhanced
H2 uptake in solvents confined in mesoporous metal-organic framework, J. Am.
Chem. Soc. 134, 17369 (2012).
[2] L. N. Ho, S. Clauzier, Y. Schuurman, D. Farrusseng, B. Coasne, Gas uptake in
solvents confined in mesopores: Adsorption versus enhanced solubility, J.
Phys. Chem. Lett. 4, 2274 (2013).
[3] L. N. Ho, Y. Schuurman, D. Farrusseng, B. Coasne, Solubility of Gases in
Water Confined in Nanoporous Materials: ZSM-5, MCM-41, MIL-100, J. Phys.
Chem. C 119, 21547 (2015).
Keywords: Adsorption and catalytic processes, Oversolubility and confined solvants,
Hybrid porous materials
Presenting authors email: benoit.coasne@univ-grenoble-alpes.fr