Co-Fe Nanoparticles Wrapped on N-Doped Graphitic Carbons as Highly Selective CO2 Methanation Catalysts

被引：13
|
作者：
Jurca, Bogdan [1 ]
Peng, Lu [2 ]
Primo, Ana [2 ]
Gordillo, Alvaro [3 ]
Parvulescu, Vasile, I [1 ]
Garcia, Hermenegildo [2 ]
机构：
[1] Univ Bucharest, Fac Chem, Dept Organ Chem & Biochem & Catalysis, Bucharest 030016, Romania
[2] Univ Politecn Valencia, Inst Univ Tecnol Quim, CSIC, Valencia 46022, Spain
[3] BASF SE, D-67056 Ludwigshafen, Germany
来源：
ACS APPLIED MATERIALS & INTERFACES | 2021年 / 13卷 / 31期
关键词：
heterogeneous catalysis; CO2; utilization; Sabatier reaction; Co-Fe alloy nanoparticles as catalysts; Co-Fe wrapped on N-doped graphene; PHOTOCATALYTIC CONVERSION; GRAPHENE; HYDROGENATION; CLUSTER; OXIDE;
D O I：
10.1021/acsami.1c05542
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Pyrolysis of chitosan containing various loadings of Co and Fe renders Co-Fe alloy nanoparticles supported on N-doped graphitic carbon. Transmission electron microscopy (TEM) images show that the surface of Co-Fe NPs is partially covered by three or four graphene layers. These Co-Fe@(N)C samples catalyze the Sabatier CO2 hydrogenation, increasing the activity and CH4 selectivity with the reaction temperature in the range of 300-500 degrees C. Under optimal conditions, a CH4 selectivity of 91% at an 87% CO2 conversion was reached at 500 degrees C and a space velocity of 75 h(-1) under 10 bar. The Co-Fe alloy nanoparticles supported on N-doped graphitic carbon are remarkably stable and behave differently as an analogous Co-Fe catalyst supported on TiO2.
引用
收藏
页码：36976 / 36981
页数：6
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