Titre :

Efficiently catalytic purification of indoor formaldehyde upon Co-N sites derived from ZIF-67 carbonization

Auteur(s) :

Di, Zhaoying [Auteur]
Beijing University of Chemical Technology [BUCT]
Zhang, Runduo [Auteur]
Beijing University of Chemical Technology [BUCT]
Guo, Xiaonan [Auteur]
Beijing University of Chemical Technology [BUCT]
Shen, Hanxiao [Auteur]
Beijing University of Chemical Technology [BUCT]
Royer, sebastien [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Jia, Jingbo [Auteur]
Beijing University of Chemical Technology [BUCT]
Wei, Ying [Auteur]
Beijing University of Chemical Technology [BUCT]
Li, Yaping [Auteur]
Beijing University of Chemical Technology [BUCT]
Zheng, Lirong [Auteur]
Institute of High Energy Physics [Beijing] [IHEP]

Titre de la revue :

Fuel

Nom court de la revue :

Fuel

Numéro :

380

Pagination :

-

Date de publication :

2024-11-18

ISSN :

0016-2361

Mot(s)-clé(s) en anglais :

Formaldehyde
Catalytic oxidation
Room temperature
ZIF-67
Co-N-1 centers

Discipline(s) HAL :

Chimie/Catalyse

Résumé en anglais : [en]

The catalytic elimination of formaldehyde (HCHO) by low-cost transition metal catalysts at ambient temperature has been a challenge. In this study, ZIF-67 as precursor was introduced to construct a series of Co-based ...
Lire la suite >The catalytic elimination of formaldehyde (HCHO) by low-cost transition metal catalysts at ambient temperature has been a challenge. In this study, ZIF-67 as precursor was introduced to construct a series of Co-based catalysts supported by N-doped carbon (Co/NC-X) via the pyrolysis at different temperatures in N2 atmosphere. The catalyst obtained by pyrolysis of ZIF-67 at 700 °C (Co/NC-700) exhibited a HCHO conversion reaching 96 % at 25 °C. The characterizations and theoretical calculations showed that the abundant defect sites on the surface of Co/NC-700 generated by the rearrangement of N atoms into the hexagonal ring of graphitic carbon could anchor the exposed active cobalt component, forming Co-N1 centers and promoting the cobalt dispersion. Co-N1 centers are beneficial for the dissociation of adsorbed oxygen molecules into reactive oxygen species (ROS), which can accelerate the oxidation of intermediates along with a better activity.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
CNRS
Centrale Lille
ENSCL
Univ. Artois

Collections :

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

Équipe(s) de recherche :

Matériaux pour la catalyse (MATCAT)

Date de dépôt :

2024-11-23T22:06:52Z
2024-12-04T07:53:08Z