Title :

Cerium modified birnessite-like MnO2 for low temperature oxidation of formaldehyde: Effect of calcination temperature

Author(s) :

Abdallah, Grece [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Giraudon, Jean-Marc [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Nuns, Nicolas [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Addad, Ahmed [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Morent, R. [Auteur]
Universiteit Gent = Ghent University = Université de Gand [UGENT]
De Geyter, N. [Auteur]
Universiteit Gent = Ghent University = Université de Gand [UGENT]
Lamonier, Jean-Francois [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Journal title :

Applied Surface Science

Abbreviated title :

Appl. Surf. Sci.

Volume number :

618

Pages :

156559

Publisher :

Elsevier

Publication date :

2023-03-13

ISSN :

0169-4332

English keyword(s) :

Cerium modified birnessite
HCHO oxidation
Calcination
ToF-SIMS

HAL domain(s) :

Chimie/Catalyse

English abstract : [en]

Cerium modified birnessite-like MnO2 were synthesized (CexMn; x = 0.01; 0.1) from a simple and inexpensive redox method involving the reduction of potassium permanganate by sodium lactate in the presence of Ce(NO3)3 at ...
Show more >Cerium modified birnessite-like MnO2 were synthesized (CexMn; x = 0.01; 0.1) from a simple and inexpensive redox method involving the reduction of potassium permanganate by sodium lactate in the presence of Ce(NO3)3 at ambient temperature. The as-synthesized samples were calcined at different temperatures (Tc: 200, 300 and 400 °C) to be tested in HCHO total oxidation in dry air at low temperature. The Ce0.01Mn catalyst calcined at 400 °C showed the best catalytic activity in HCHO oxidation with a T50 (temperature at which 50 % of HCHO was converted into CO2) of 50 °C and was found to be air and moisture stable (up to 75 %RH) upon time. The beneficial effects of a calcination step at 400 °C allowed to get enhanced asymmetric Ce-O-Mn surface interactions along with highly dispersed Ce4+/3+ related species and enhanced TCMn3+ (TC: triple corner) amounts which contributed to a great extent for its high activity in HCHO oxidation.Show less >

Language :

Anglais

Peer reviewed article :

Oui

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
• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Remédiation et matériaux catalytiques (REMCAT)

Submission date :

2023-03-23T01:00:08Z
2023-03-31T08:56:18Z
2023-03-31T08:59:23Z
2023-11-13T13:06:23Z
2023-11-13T14:53:02Z
2023-11-13T14:54:44Z