Generalized Hydrodynamic Treatment of the Interplay between Restricted Transport and Catalytic Reactions in Nanoporous Materials

TitleGeneralized Hydrodynamic Treatment of the Interplay between Restricted Transport and Catalytic Reactions in Nanoporous Materials
Publication TypeJournal Article
Year of Publication2012
AuthorsAckerman DM, Wang J, Evans JW
Journal TitlePhysical Review Letters
Volume108
Pages228301
Date Published05
Type of ArticleArticle
ISBN Number0031-9007
Accession NumberWOS:000304655800016
Keywordslattice-gas models, single-file diffusion, tracer diffusion
Abstract

Behavior of catalytic reactions in narrow pores is controlled by a delicate interplay between fluctuations in adsorption-desorption at pore openings, restricted diffusion, and reaction. This behavior is captured by a generalized hydrodynamic formulation of appropriate reaction-diffusion equations (RDE). These RDE incorporate an unconventional description of chemical diffusion in mixed-component quasi-single-file systems based on a refined picture of tracer diffusion for finite-length pores. The RDE elucidate the nonexponential decay of the steady-state reactant concentration into the pore and the non-mean-field scaling of the reactant penetration depth.

URL<Go to ISI>://WOS:000304655800016
DOI10.1103/PhysRevLett.108.228301
Alternate JournalPhys. Rev. Lett.