Title :

Ethanol transformation into hydrocarbons on ZSM-5 zeolites: Influence of Si/Al ratio on catalytic performances and deactivation rate. Study of the radical species role

Author(s) :

Ferreira Madeira, Filipa [Auteur]
Institut de Chimie des Milieux et Matériaux de Poitiers [IC2MP]
Ben Tayeb Meziane, Karima [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
Pinard, Ludovic [Auteur]
Institut de Chimie des Milieux et Matériaux de Poitiers [IC2MP]
Vezin, Herve [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
Maury, Sylvie [Auteur]
IFP Energies nouvelles [IFPEN]
Cadran, Nicolas [Auteur]
IFP Energies nouvelles [IFPEN]

Journal title :

Applied Catalysis A: General

Volume number :

443-444

Pages :

171-180

Publisher :

Elsevier BV

Publication date :

2012-11

ISSN :

0926-860X

English keyword(s) :

Brønsted acidity
Coke composition
Radical
Deactivation
Ethanol conversion

HAL domain(s) :

Chimie/Chimie organique
Chimie/Catalyse
Chimie/Autre

English abstract : [en]

The catalytic performances of HZSM-5 zeolites with Si/Al ratios ranging from 16 to 500 were investigated for ethanol transformation into hydrocarbons. The fresh and used catalysts were characterized by a combination of ...
Show more >The catalytic performances of HZSM-5 zeolites with Si/Al ratios ranging from 16 to 500 were investigated for ethanol transformation into hydrocarbons. The fresh and used catalysts were characterized by a combination of nitrogen adsorption, pyridine adsorption followed by infrared spectroscopy (IR), gas chromatography–mass spectrometry (GC–MS) coupling and electron paramagnetic resonance (EPR). HZSM-5(Si/Al = 40) was found to be the most stably and selective catalyst due to an optimum balance between the number of Brønsted acid sites and the amount of radicals, which are active sites for ethanol conversion into higher hydrocarbons. However, a change of radical species nature occurred with time-on-stream (TOS) which could be responsible for the deactivation of all catalysts leading to a decrease of C3+ hydrocarbons yield.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS

Collections :

• Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516

Research team(s) :

Propriétés magnéto structurales des matériaux (PMSM)

Submission date :

2021-06-17T15:32:55Z
2021-09-27T12:56:17Z