Construction of Dual-Active-Site Copper Catalyst Containing both CuN3 and CuN4 Sites.
Small
; 17(8): e2006834, 2021 02.
Article
em En
| MEDLINE
| ID: mdl-33522142
ABSTRACT
Clear recognition and rational construction of suitable active center for specific reaction is always of great significance in designing highly efficient catalysts. Herein, a dual-active-site copper catalyst (DAS-Cu) containing both CuN3 and CuN4 sites is reported. Such catalysts show extremely high catalytic performance (yield up to 97%) toward oxyphosphorylation of alkenes, while catalysts with single active site (CuN3 or CuN4 ) are chemically inert in this reaction. Combined with theoretical and experimental results, the different roles of two different Cu active sites in this reaction are further identified. CuN3 site captures the oxygen and trigger further oxidizing process, while CuN4 site provides moderate adsorption sites for the protection of phosphonyl radicals. This work deeply discloses the significant cooperated role with two single-atomic sites in one catalytic active center and brings up a valuable clue for the rational design of better-performing heterogeneous catalyst.
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Base de dados:
MEDLINE
Assunto principal:
Oxigênio
/
Cobre
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article