Title :

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

Author(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

Journal title :

Chem. Eng. J.

Abbreviated title :

Chem. Eng. J.

Volume number :

491

Pages :

-

Publication date :

2024-06-17

ISSN :

1385-8947

English keyword(s) :

Dihydroxybenzenes
Isomerization
Platinum catalyst
ZSM-5
Carbonaceous deposits

HAL domain(s) :

Chimie/Catalyse

English abstract : [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 ...
Show more >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.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
Centrale Lille
ENSCL
Univ. Artois

Collections :

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

Research team(s) :

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

Submission date :

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