Titre :

Isomerization of dihydroxybenzenes over metal-zeolite catalysts through the carbonaceous deposits

Auteur(s) :

Wang, Qiyan [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Shamzhy, Mariya [Auteur]
Univerzita Karlova [Praha, Česká republika] = Charles University [Prague, Czech Republic] [UK]
Heuson, Egon [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Trentesaux, Martine [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Marinova, Maya [Auteur]
Institut Chevreul - FR2638
Addad, Ahmed [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Su, Fangzheng [Auteur]
Eco-Efficient Products & Processes Laboratory [E2P2L]
Ordomsky, Vitaly [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Titre de la revue :

Chem. Eng. J.

Nom court de la revue :

Chem. Eng. J.

Numéro :

491

Pagination :

-

Date de publication :

2024-06-17

ISSN :

1385-8947

Mot(s)-clé(s) en anglais :

Dihydroxybenzenes
Isomerization
Platinum catalyst
ZSM-5
Carbonaceous deposits

Discipline(s) HAL :

Chimie/Catalyse

Résumé en anglais : [en]

Dihydroxybenzenes, including catechol, resorcinol and hydroquinone, have significant commercial value for a variety of applications such as adhesives, resins, pharmaceuticals, coatings etc. However, selective production ...
Lire la suite >Dihydroxybenzenes, including catechol, resorcinol and hydroquinone, have significant commercial value for a variety of applications such as adhesives, resins, pharmaceuticals, coatings etc. However, selective production of required isomers by phenol hydroxylation represents a considerable challenge. Here, we report a new approach for the synthesis of dihydroxybenzenes by their isomerization using a bifunctional Pt/ZSM-5 catalyst. The catalyst successfully facilitates the transformation of catechol and hydroquinone to each other with a selectivity of up to 74 % and yields up to 50 %. The investigation of the mechanism suggests that isomerization proceeds via a carbonaceous deposit (coke) formed by intermediate quinone condensation with subsequent hydrogenolysis to isomers. The proposed mechanism shows the way for the design of the efficient process for isomerization of dihydroxybenzenes.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
CNRS
Centrale Lille
ENSCL
Univ. Artois

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Équipe(s) de recherche :

Catalyse pour l’énergie et la synthèse de molécules plateforme (CEMOP)

Date de dépôt :

2024-06-28T21:07:22Z
2024-07-10T09:03:19Z