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Multifractal scaling analysis of the selectivity behavior of a multi-step reaction over DLA surfaces

✍ Scribed by Chung-Kung Lee; Shyi-Long Lee

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 300 KB
Volume: 226
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(94)00707-1

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✦ Synopsis

Monte Carlo simulations of a three-step catalytic reaction over surfaces of diffusion-limited aggregates (DLA) were performed to examine the morphological effect on catalyst selectivity. The effect of varying the probability of the reaction steps and DLA cluster sizes on the normalized selectivity distribution were then analyzed by multifractal scaling techniques. Increase of DLA size is found to lower the position sensitivity of normalized selectivity distribution. The increase of the dimerization to isomerization ratio increases the selectivity of active sites as the adsorption probability equals 1. The ratio of dimerization to isomerization caused no effect on the normalized selectivity distribution as the adsorption probability << 1.

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