Title :

How does the balance of metal and acid functions on the benchmark Mo/ZSM-5 catalyst drive the Methane dehydroaromatization reaction?

Author(s) :

Beuque, Antoine [Auteur]
Institut de Chimie des Milieux et Matériaux de Poitiers [IC2MP]
Hu, Hao [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Berrier, Elise [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Sachse, Alexander [Auteur]
Institut de Chimie des Milieux et Matériaux de Poitiers [IC2MP]
Paul, Jean-Francois [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Pinard, Ludovic [Auteur]
Institut de Chimie des Milieux et Matériaux de Poitiers [IC2MP]

Journal title :

Catalysis Today

Publisher :

Elsevier BV

Publication date :

2022-06

ISSN :

0920-5861

English keyword(s) :

Zeolite
Methane dehydroaromatization
Molybdenum species
Brønsted acidity
Catalytic activity
Deactivation

HAL domain(s) :

Chimie/Chimie théorique et/ou physique

English abstract : [en]

Among all the proposed catalytic systems (new supports, synthesis post-treatment, change of transition metal, multi-metallic catalysts, etc.) for the methane dehydroaromatization, the initial Mo/ZSM-5 has remained one of ...
Show more >Among all the proposed catalytic systems (new supports, synthesis post-treatment, change of transition metal, multi-metallic catalysts, etc.) for the methane dehydroaromatization, the initial Mo/ZSM-5 has remained one of the best suitable catalysts, despite its lack of deep understanding. The catalyst evolves throughout four successive stages: calcination, activation, induction, and deactivation. By studying the balance influence between the acid and metal functions throughout its lifetime, the molybdenum and carbon species could be localized, quantified, and identified as well as their roles. An optimal compromise was then established where the catalyst is composed of 4 wt% Mo with the highest possible acidity. Below these targets, the catalysts with minimal Mo content and low Brønsted acidity display poor catalytic performances, whereas zeolite amorphization occurs during the early stages of the reaction independently of the zeolite acidity once the Mo loading exceeds the optimal value.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

European Project :

Development of a bifunctional hierarchically structured zeolite based nano-catalyst using 3D-technology for direct conversion of methane into aromatic hydrocarbons via methane dehydroaromatization

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) :

Modélisation et spectroscopies (MODSPEC)

Submission date :

2022-06-09T13:32:51Z
2022-06-16T11:49:55Z
2022-06-16T12:32:46Z
2022-06-23T13:06:45Z