Title :

Efficient Promoters and Reaction Paths in the CO2 Hydrogenation to Light Olefins over Zirconia-Supported Iron Catalysts

Author(s) :

Barrios, Alan J. [Auteur]
Peron, Deizi-Vanessa [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Chakkingal, Anoop [Auteur]
Dugulan, Iulian [Auteur]
Moldovan, Simona [Auteur]
Nakouri, Kalthoum [Auteur]
Thuriot, Joelle [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Wojcieszak, Robert [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Thybaut, Joris W. [Auteur]
Virginie, Mirella [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Khodakov, Andrei [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Journal title :

ACS Catalysis

Abbreviated title :

ACS Catal.

Volume number :

12

Pages :

3211–3225

Publisher :

American Chemical Society

Publication date :

2022-02-23

ISSN :

2155-5435

English keyword(s) :

CO2 mitigation
hydrogenation
light olefins
iron catalysts
high throughput

HAL domain(s) :

Chimie/Catalyse
Sciences de l'environnement
Chimie

English abstract : [en]

Hydrogenation into light olefins is an attractive strategy for CO2 fixation into chemicals. In this article, high throughput experimentation and extended characterization were employed to identify the most efficient promoters ...
Show more >Hydrogenation into light olefins is an attractive strategy for CO2 fixation into chemicals. In this article, high throughput experimentation and extended characterization were employed to identify the most efficient promoters and to elucidate structure–performance correlations and reaction paths in the CO2 hydrogenation to light olefins over zirconia-supported iron catalysts. K, Cs, Ba, Ce, Nb, Mo, Mn, Cu, Zn, Ga, In, Sn, Sb, Bi, and V were added in the same molar concentrations to zirconia-supported iron catalyst and evaluated as promoters. The CO2 hydrogenation proceeds via intermediate formation of CO followed by surface polymerization. Over the iron catalysts containing alkaline promoters, initially higher selectivity to light olefins shows a significant decrease with the CO2 conversion, because of further surface polymerization and the formation of longer chain hydrocarbons. A relatively low selectivity to light olefins over the promoted catalysts, without potassium, is not much affected by the CO2 conversion. Essential characteristics of iron catalysts to obtain a higher yield of light olefins seem to be a higher iron dispersion, a higher extent of carbidization, and optimized basicity. The strongest promoting effect is reported for the alkaline metals. A further increase in the light olefin selectivity is observed after simultaneous addition of potassium with copper, molybdenum, gallium, or cerium.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

ANR Project :

Plateforme intégREe AppLiquée au criblage haut débit de CATalyseurs pour les bioraffineries
Groupe d'Etudes et de Nanoanalyses des Effets d'IrradiationS

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) :

Valorisation des alcanes et de la biomasse (VAALBIO)
Catalyse pour l’énergie et la synthèse de molécules plateforme (CEMOP)

Submission date :

2023-06-05T08:10:11Z
2023-06-27T09:40:18Z
2023-06-28T08:34:47Z