Title :

Effect of oxomolybdate species dispersion on direct methanol oxidation to dimethoxymethane over MoOx/TiO2catalysts

Author(s) :

Faye, Jérémy [Auteur]

Capron, Mickael [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Takahashi, Atsushi [Auteur]

PAUL, Sébastien [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Katryniok, Benjamin [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Fujitani, Tadahiro [Auteur]

Dumeignil, Franck [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]

Journal title :

Energy Science & Engineering

Volume number :

3

Pages :

115-125

Publication date :

2015

English keyword(s) :

catalyst
dimethoxymethane
methanol
molybdenum
oxidation
titania

HAL domain(s) :

Chimie/Catalyse

English abstract : [en]

The one‐step selective oxidation of methanol to dimethoxymethane (DMM) was demonstrated over titania‐supported molybdenum oxide catalysts, containing different amounts of molybdenum and prepared using two different ...
Show more >The one‐step selective oxidation of methanol to dimethoxymethane (DMM) was demonstrated over titania‐supported molybdenum oxide catalysts, containing different amounts of molybdenum and prepared using two different impregnation techniques, namely wet impregnation and incipient wetness impregnation. The corresponding catalysts exhibited both acidic and redox properties, which are necessary for the oxidation of methanol to formaldehyde with subsequent condensation of the latter with excess methanol to finally yield DMM. The formation of well‐dispersed polyoxomolybdate species on the catalyst surface was evidenced using IR‐Raman, X‐ray diffraction, and nitrogen physisorption. Varying the amount of these polyoxomolydate species was associated with a modulation of the acidic and redox properties, as shown by NH3‐TPD and H2‐TPR. With respect to the catalytic performances, the best balance between acid and redox properties was observed over the samples containing 8 wt.% Mo, which corresponds to a theoretical MoOx species coverage close to a monolayer.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

ENSCL
Université de Lille
CNRS
Centrale Lille
Univ. Artois

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Research team(s) :

Valorisation des alcanes et de la biomasse (VAALBIO)

Submission date :

2019-09-24T14:34:39Z
2020-09-25T09:48:37Z