Selective photocatalytic conversion of ...
Document type :
Article dans une revue scientifique: Article original
PMID :
Permalink :
Title :
Selective photocatalytic conversion of methane into carbon monoxide over zinc-heteropolyacid-titania nanocomposites
Author(s) :
Yu, Xiang [Auteur]
De Waele, Vincent [Auteur]
Löfberg, Axel [Auteur]
Ordomsky, Vitaly [Auteur]
Khodakov, Andrei [Auteur]
De Waele, Vincent [Auteur]

Löfberg, Axel [Auteur]

Ordomsky, Vitaly [Auteur]

Khodakov, Andrei [Auteur]

Journal title :
Nature Communications
Abbreviated title :
Nat Commun
Volume number :
10
Pages :
700
Publication date :
2019-02-11
ISSN :
2041-1723
HAL domain(s) :
Chimie/Catalyse
English abstract : [en]
Chemical utilization of vast fossil and renewable feedstocks of methane remains one of the most important challenges of modern chemistry. Herein, we report direct and selective methane photocatalytic oxidation at ambient ...
Show more >Chemical utilization of vast fossil and renewable feedstocks of methane remains one of the most important challenges of modern chemistry. Herein, we report direct and selective methane photocatalytic oxidation at ambient conditions into carbon monoxide, which is an important chemical intermediate and a platform molecule. The composite catalysts on the basis of zinc, tungstophosphoric acid and titania exhibit exceptional performance in this reaction, high carbon monoxide selectivity and quantum efficiency of 7.1% at 362 nm. In-situ Fourier transform infrared and X-ray photoelectron spectroscopy suggest that the catalytic performance can be attributed to zinc species highly dispersed on tungstophosphoric acid /titania, which undergo reduction and oxidation cycles during the reaction according to the Mars-van Krevelen sequence. The reaction proceeds via intermediate formation of surface methyl carbonates.Show less >
Show more >Chemical utilization of vast fossil and renewable feedstocks of methane remains one of the most important challenges of modern chemistry. Herein, we report direct and selective methane photocatalytic oxidation at ambient conditions into carbon monoxide, which is an important chemical intermediate and a platform molecule. The composite catalysts on the basis of zinc, tungstophosphoric acid and titania exhibit exceptional performance in this reaction, high carbon monoxide selectivity and quantum efficiency of 7.1% at 362 nm. In-situ Fourier transform infrared and X-ray photoelectron spectroscopy suggest that the catalytic performance can be attributed to zinc species highly dispersed on tungstophosphoric acid /titania, which undergo reduction and oxidation cycles during the reaction according to the Mars-van Krevelen sequence. The reaction proceeds via intermediate formation of surface methyl carbonates.Show less >
Language :
Anglais
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
CNRS
Centrale Lille
ENSCL
Univ. Artois
Université de Lille
Centrale Lille
ENSCL
Univ. Artois
Université de Lille
Collections :
Research team(s) :
Catalyse pour l’énergie et la synthèse de molécules plateforme (CEMOP)
Valorisation des alcanes et de la biomasse (VAALBIO)
Photodynamique, confinement, solvatation (PCS)
Valorisation des alcanes et de la biomasse (VAALBIO)
Photodynamique, confinement, solvatation (PCS)
Submission date :
2022-03-02T07:13:14Z