DIFFUSION IN A POROUS MEDIUM WITH DEAD ENDS: AN ANALYSIS BY METHODS OF THE THEORY OF DIFFUSION-CONTROLLED REACTIONS

Zitserman, V.Y.; Makhnovskii, Y.A.; Dagdug, L.; Berezhkovskii, A.M.

Информация о цитировании статьи получена из Web of Science, Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 3 мая 2017 г.

Авторы: Zitserman V.Yu, Makhnovskii Yu A., Dagdug L., Berezhkovskii A.M.
Журнал: Russian Journal of Physical Chemistry A
Том: 82
Номер: 12
Год издания: 2008
Издательство: Pleiades Publishing, Ltd
Местоположение издательства: Road Town, United Kingdom
Первая страница: 2039
Последняя страница: 2044
DOI: 10.1134/S0036024408120121
Аннотация: The problem of the diffusion of a particle in a porous medium with dead ends entering which is related to overcoming high entropy barriers is considered. Dead ends effectively decelerate migration, because, while residing in them, a particle does not participate in diffusion transfer. A new approach to the problem was suggested. The approach was based on the possibility of splitting the diffusion process into separate well-defined stages thanks to the presence of high entropy barriers. An analysis of these stages was performed using methods developed in the theory of diffusion-controlled reactions. The new approach was used to calculate the effective diffusion coefficient (characterizing the limiting particle migration deceleration caused by the presence of dead ends in a porous medium) and estimate the time of its establishment.
Добавил в систему: Махновский Юрий Абрамович

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DIFFUSION IN A POROUS MEDIUM WITH DEAD ENDS: AN ANALYSIS BY METHODS OF THE THEORY OF DIFFUSION-CONTROLLED REACTIONSстатья

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