Titre :

Decisive Influence of SAPO-34 Zeolite on Light Olefin Selectivity in Methanol-Meditated CO₂ Hydrogenation over Metal Oxide-Zeolite Catalysts

Auteur(s) :

Chernyak, Sergei [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Corda, Massimo [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Marinova, Maya [Auteur]
Institut Michel Eugène Chevreul - FR 2638 [IMEC]
Safonova, Olga V. [Auteur]
Paul Scherrer Institute [PSI]
Kondratenko, V. A. [Auteur]
Kondratenko, E. V. [Auteur]
Kolyagin, Yury [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Cheng, K. [Auteur]
Ordomsky, Vitaly [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Khodakov, Andrei [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Titre de la revue :

ACS Catalysis

Nom court de la revue :

ACS Catal.

Numéro :

13

Pagination :

14627–14638

Date de publication :

2023-11-17

ISSN :

2155-5435

Mot(s)-clé(s) en anglais :

CO2 hydrogenation
methanol
tandemprocess
light olefins
selectivity
yield

Discipline(s) HAL :

Chimie

Résumé en anglais : [en]

Methanol-mediated CO2 selective hydrogenation to light olefins (LO) over bifunctional catalysts containing metal oxide and zeolite components is an attractive sustainable chemical process. The main challenges of this process ...
Lire la suite >Methanol-mediated CO2 selective hydrogenation to light olefins (LO) over bifunctional catalysts containing metal oxide and zeolite components is an attractive sustainable chemical process. The main challenges of this process include achieving high LO selectivity and low selectivity to light paraffins and CO. Herein, we analyze the selectivity–conversion correlations over metal oxide-zeolite bifunctional catalysts and elucidate the functions of each catalyst component. A series of catalytic systems based on oxides of Zn, In, Mn, Cr, or Ga and different SAPO-34 zeolites were synthesized and evaluated at different CO2 conversion levels. It was uncovered that the selectivity to LO within hydrocarbon fractions ultimately depended on the zeolite component and decreased as a function of the hydrocarbon yield. The metal oxide catalyst component was responsible for the CO2 conversion, overall hydrocarbon, and CO selectivities. The SAPO-34 morphology and acidity were identified as major descriptors of the CO-free LO selectivity in the CO2 hydrogenation over bifunctional metal oxide-zeolite catalysts.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 :

2024-01-20T00:53:45Z
2024-02-09T15:44:37Z
2024-04-16T07:32:12Z