Nanocell type ru@quinone core-shell catalyst ...
Type de document :
Article dans une revue scientifique: Article original
URL permanente :
Titre :
Nanocell type ru@quinone core-shell catalyst for selective oxidation of alcohols to carbonyl compounds
Auteur(s) :
Zhao, J. P. [Auteur]
Hernandez, Willinton Yesid [Auteur]
Zhou, Wen-Juan [Auteur]
Yang, Y. [Auteur]
Vovk, Evgeny I. [Auteur]
Wu, M. [Auteur]
Naghavi, N. [Auteur]
Capron, Mickael [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Ordomsky, Vitaly [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Hernandez, Willinton Yesid [Auteur]
Zhou, Wen-Juan [Auteur]
Yang, Y. [Auteur]
Vovk, Evgeny I. [Auteur]
Wu, M. [Auteur]
Naghavi, N. [Auteur]
Capron, Mickael [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Ordomsky, Vitaly [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Titre de la revue :
Applied catalysis. A, General
Nom court de la revue :
Appl. Catal. A-Gen.
Numéro :
602
Date de publication :
2020-07-25
ISSN :
0926-860X
Mot(s)-clé(s) en anglais :
Alcohols
Oxidation
Nanocell
Quinone
Ru
Oxidation
Nanocell
Quinone
Ru
Discipline(s) HAL :
Chimie/Catalyse
Résumé en anglais : [en]
Selective aerobic oxidation of alcohols to corresponding carbonyl compounds is one of the most important challenges in the modern chemical industry. The existing metal based heterogeneous catalysts provide low selectivity ...
Lire la suite >Selective aerobic oxidation of alcohols to corresponding carbonyl compounds is one of the most important challenges in the modern chemical industry. The existing metal based heterogeneous catalysts provide low selectivity due to over-oxidation of aldehydes to acids and esters. We have found that coating of Ru nanoparticles by disodium anthraquinone-2,6-disulfonate (SQ) results in selective oxidation of aliphatic, unsaturated and aromatic alcohols to aldehydes. Analysis of core-shell Ru@SQ catalyst shows strong interaction between Ru and SQ leading to change of their electronic state and structure. In-situ study of alcohol oxidation using FTIR and electrochemistry indicates on hydrogen abstraction by shell quinone species with hydrogen transfer by quinone to Ru core for water generation. Thus, the catalyst behavior mimics nano-electrocell by separation of oxidation reaction over quinone and reduction of oxygen over Ru providing higher selectivity to aldehyde.Lire moins >
Lire la suite >Selective aerobic oxidation of alcohols to corresponding carbonyl compounds is one of the most important challenges in the modern chemical industry. The existing metal based heterogeneous catalysts provide low selectivity due to over-oxidation of aldehydes to acids and esters. We have found that coating of Ru nanoparticles by disodium anthraquinone-2,6-disulfonate (SQ) results in selective oxidation of aliphatic, unsaturated and aromatic alcohols to aldehydes. Analysis of core-shell Ru@SQ catalyst shows strong interaction between Ru and SQ leading to change of their electronic state and structure. In-situ study of alcohol oxidation using FTIR and electrochemistry indicates on hydrogen abstraction by shell quinone species with hydrogen transfer by quinone to Ru core for water generation. Thus, the catalyst behavior mimics nano-electrocell by separation of oxidation reaction over quinone and reduction of oxygen over Ru providing higher selectivity to aldehyde.Lire moins >
Langue :
Anglais
Audience :
Internationale
Vulgarisation :
Non
Établissement(s) :
CNRS
Centrale Lille
ENSCL
Univ. Artois
Université de Lille
Centrale Lille
ENSCL
Univ. Artois
Université de Lille
Collections :
Équipe(s) de recherche :
Catalyse pour l’énergie et la synthèse de molécules plateforme (CEMOP)
Valorisation des alcanes et de la biomasse (VAALBIO)
Valorisation des alcanes et de la biomasse (VAALBIO)
Date de dépôt :
2022-03-02T07:14:52Z