Fractal analysis of size effects and surface morphology effects in catalysis and electrocatalysis

D. Avnir*, J. J. Carberry, O. Citri, D. Farin, M. Grätzel, A. J. McEvoy

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Fractal geometry tools are used in order to analyze several related problems in surface science, catalysis, and electrocatalysis. The effects of complex morphologies of adsorbents, catalysts, and electrodes on various molecular processes with these materials are determined both theoretically and experimentally. It is shown that fractal geometry provides a convenient and natural tool for the elucidation of geometry-performance relations in heterogeneous chemistry. Issues covered are particle size effects in physisorption and chemisorption; morphology effects on a variety of catalytic processes with unsupported catalysts (including coal liquefaction, alkene polymerizations, oxidations, dehydrogenations, and esterifications); surface accessibility effects on molecular interactions in an Eley-Rideal mechanism; surface patterning effects on concentration profiles near the surface; and electrode-morphology effects on a variety of electrochemical and electrocatalytic processes. The domain of applicability of the fractal approach to these problems is discussed.

Original languageEnglish
Pages (from-to)397-410
Number of pages14
JournalChaos
Volume1
Issue number4
DOIs
StatePublished - 1991

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