Quantification of metal-acid balance in hydroisomerization catalysts: A step further toward catalyst design - Archive ouverte HAL Access content directly
Journal Articles AIChE Journal Year : 2017

Quantification of metal-acid balance in hydroisomerization catalysts: A step further toward catalyst design

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Abstract

A methodology was developed to interpret the results of n-paraffins hydroisomerization over bifunctional catalysts based on two simple kinetic models used consecutively. Firstly, a macrokinetic model was used to obtain the corresponding turnover frequency over the acid sites and the maximum of C 16 isomer yield. Secondly, a dual-function model was used to correlate these catalytic descriptors to the ratio of metal to acid sites of the catalyst. To illustrate the methodology, Pt/HBEA and Pt/HUSY catalysts with different Pt loadings were evaluated. The impact of metal-acid balance on the catalytic turnover frequency and the maximal C 16 isomer yield were adequately captured for the bifunctional HUSY and HBEA catalysts. Moreover, the parameters of the dual-function model revealed to be intrinsic to the catalytic properties of the zeolite under the scope. This methodology is believed to be of interest for information-driven catalyst design for the hydroisomerization of n-paraffins.
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Dates and versions

hal-01581867 , version 1 (05-09-2017)

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Pedro S. F. Mendes, João M. Silva, M. Filipa Ribeiro, Pascal Duchêne, Antoine Daudin, et al.. Quantification of metal-acid balance in hydroisomerization catalysts: A step further toward catalyst design. AIChE Journal, 2017, 63 (7), pp.2864 - 2875. ⟨10.1002/aic.15613⟩. ⟨hal-01581867⟩

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