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

Pedro S. F. Mendes; João M. Silva; M. Filipa Ribeiro; Pascal Duchêne; Antoine Daudin; Christophe Bouchy

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

Pedro S. F. Mendes ^{1, 2} João M. Silva ^{3, 1} M. Filipa Ribeiro ¹ Pascal Duchêne ² Antoine Daudin ² Christophe Bouchy ^{2, *}

* Corresponding author

1 Instituto Superior Técnico

2 IFPEN - IFP Energies nouvelles

3 IPL - Instituto Politécnico de Lisboa

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.

Keywords : hydroisomerization kinetic model metal-acid balance zeolite High- Throughput Experimentation

Document type :

Journal articles

Domain :

Chemical Sciences / Catalysis

Chemical Sciences

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https://hal-ifp.archives-ouvertes.fr/hal-01581867
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Submitted on : Tuesday, September 5, 2017 - 11:37:23 AM
Last modification on : Saturday, June 1, 2019 - 11:26:02 AM

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

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

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