Gas Uptake in Solvents Confined in Mesopores: Adsorption versus Enhanced Solubility | Zendy

Linh Ngoc Ho | Zendy; S. Clauzier | Zendy; Yves Schuurman | Zendy; David Farrusseng | Zendy; Benoît Coasne | Zendy

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Gas Uptake in Solvents Confined in Mesopores: Adsorption versus Enhanced Solubility

Author(s) -

Linh Ngoc Ho,

S. Clauzier,

Yves Schuurman,

David Farrusseng,

Benoît Coasne

Publication year - 2013

Publication title -

the journal of physical chemistry letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.563

H-Index - 203

ISSN - 1948-7185

DOI - 10.1021/jz401143x

Subject(s) - solubility , adsorption , solvent , mesoporous material , porosity , chemical engineering , dissolution , molecule , layering , chemistry , materials science , porous medium , organic chemistry , catalysis , engineering , botany , biology

International audienceThree molecular mechanisms for gas uptake in a solvent confined in mesopores are identified. On the one hand, CO2 uptake is an adsorption-driven phenomenon that arises from the strong interaction between the gas molecules and the pore surface. On the other hand, H-2 uptake is a confinement-induced enhanced solubility in which solubility is favored in the regions of low solvent density formed by the layering of the solvent. In partially filled pores, adsorption at the gas/liquid solvent interface is a third mechanism that leads to large gas uptakes. This study, which sheds light on previously reported yet unclear oversolubility in pores, provides a guide to design hybrid porous catalysts consisting of a solvent confined in a porous soli

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