Enhanced liquid-solid mass transfer in micro channels by a layer of carbon nano fibers

S.R.A. Loos, de, J. Schaaf, van der, M.H.J.M. Croon, de, T.A. Nijhuis, J.C. Schouten

Research output: Contribution to journalArticleAcademicpeer-review

11 Citations (Scopus)
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Abstract

This paper demonstrates that the observed rate of reaction of the liquid-phase selective hydrogenation of an alkyne is higher for an open and rough carbon nanofiber (CNF) layer positioned on a microchannel wall than for an unsupported flat plate catalyst or dense and smooth CNF layers. This enhancement can be contributed to two phenomena: (1) the kinetic reaction rate increases with a factor of 1.4, due to an increase of the open and freely accessible surface area of the CNF layer available for catalyst deposition; (2) the liquid–solid mass transfer increases with a factor of 2.8, due to an increase in the surface roughness of the CNF layer and the formation of large spherical islands of clustered CNFs. A thin layer of CNFs on a microchannel wall can therefore successfully be used to increase the overall rate of reaction per reactor volume compared to an unsupported flat plate catalyst.
Original languageEnglish
Pages (from-to)671-680
Number of pages10
JournalChemical Engineering Journal
Volume167
Issue number2-3
DOIs
Publication statusPublished - 2011

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