Pd‐Pt bimetallic catalysts for enhanced low‐temperature hydrodeoxygenation of vanillin - Université de Lorraine Accéder directement au contenu
Article Dans Une Revue ChemCatChem Année : 2024

Pd‐Pt bimetallic catalysts for enhanced low‐temperature hydrodeoxygenation of vanillin

Simone Govoni
  • Fonction : Auteur
Alessia Ventimiglia
  • Fonction : Auteur
Camila Ferraz
  • Fonction : Auteur
Ivaldo Itabaiana Jr
  • Fonction : Auteur
Anthony Dufour
  • Fonction : Auteur
Andreea Pasc
Nikolaos Dimitratos
  • Fonction : Auteur

Résumé

To make pyrolytic bio‐oil useful as a transportation fuel, the oxygen content must be reduced, and this can be carried out by using catalytic hydrodeoxygenation (HDO) reaction. The greatest challenge is associated with the removal of strongly bound oxygenated groups without saturating the aromatic ring while preserving the number of carbons. However, the development of a stable catalyst that can selectively remove such oxygenated groups with low hydrogen consumption is still challenging. In this context, a systematic study on HDO of vanillin on bimetallic Pd‐Pt catalysts was carried out. It aims to study the effect of bimetallic synergy in terms of activity and selectivity to creosol. Metallic nanoparticles of Pd and Pt were synthesized by sol immobilization technique and deposited on TiO2. The conversion of vanillin was correlated to the Pd‐Pt atomic ratio, while the production of the creosol was correlated to the Pd(0)/(Pd+Pt) ratio at the surface. Full conversion of vanillin was obtained at low reaction temperature (20 °C) achieving nearly 100% selectivity to creosol. These results represent a step forward in advancing the development of more efficient and sustainable processes for bio‐oil upgrading.

Domaines

Chimie
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Dates et versions

hal-04567044 , version 1 (02-05-2024)

Identifiants

Citer

Simone Govoni, Alessia Ventimiglia, Camila Ferraz, Ivaldo Itabaiana Jr, Anthony Dufour, et al.. Pd‐Pt bimetallic catalysts for enhanced low‐temperature hydrodeoxygenation of vanillin. ChemCatChem, 2024, ⟨10.1002/cctc.202400453⟩. ⟨hal-04567044⟩
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