On the possibility of spontaneous chemomechanical oscillations in adsorptive porous media | Zendy

Domenico Bullara | Zendy; Yannick De Decker | Zendy; Irving R. Epstein | Zendy

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On the possibility of spontaneous chemomechanical oscillations in adsorptive porous media

Author(s) -

Domenico Bullara,

Yannick De Decker,

Irving R. Epstein

Publication year - 2018

Publication title -

philosophical transactions of the royal society a mathematical physical and engineering sciences

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.074

H-Index - 169

eISSN - 1471-2962

pISSN - 1364-503X

DOI - 10.1098/rsta.2017.0374

Subject(s) - porous medium , adsorption , dissipative system , desorption , chemical physics , nonlinear system , matrix (chemical analysis) , langmuir , porosity , materials science , physics , kinetics , chemistry , thermodynamics , classical mechanics , quantum mechanics , composite material

We derive general conditions for the emergence of sustained chemomechanical oscillations from a non-oscillatory adsorption/desorption reaction in a gas/solid porous medium. The oscillations arise from the nonlinear response of the solid matrix to the loading of the adsorbed species. More particularly, we prove that, in order for oscillations to occur, adsorption of the gas must in general cause a swelling of the solid matrix. We also investigate the prototypical case of Langmuir kinetics both numerically and analytically.This article is part of the theme issue 'Dissipative structures in matter out of equilibrium: from chemistry, photonics and biology (part 2)'.

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