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

Bogdan Jurcă | Zendy; Lu Peng | Zendy; Ana Primo | Zendy; Álvaro Gordillo | Zendy; Vasile I. Pârvulescu | Zendy; Hermenegildo Garcı́a | Zendy

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

Author(s) -

Bogdan Jurcă,

Lu Peng,

Ana Primo,

Álvaro Gordillo,

Vasile I. Pârvulescu,

Hermenegildo Garcı́a

Publication year - 2021

Publication title -

acs applied materials and interfaces

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.535

H-Index - 228

eISSN - 1944-8252

pISSN - 1944-8244

DOI - 10.1021/acsami.1c05542

Subject(s) - materials science , methanation , catalysis , nanoparticle , selectivity , graphene , pyrolysis , alloy , carbon fibers , chemical engineering , transmission electron microscopy , doping , inorganic chemistry , nanotechnology , composite number , metallurgy , organic chemistry , composite material , chemistry , optoelectronics , engineering

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 CO 2 hydrogenation, increasing the activity and CH 4 selectivity with the reaction temperature in the range of 300-500 °C. Under optimal conditions, a CH 4 selectivity of 91% at an 87% CO 2 conversion was reached at 500 °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 TiO 2 .

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