Details

Autor(en) / Beteiligte

• Dyachenko, Аlla G.
• Ischenko, Olena V.
• Prygunova, Olga V.
• Diyuk, Vitaliy E.
• Tsapyuk, Galyna G.
• Gaidai, Snizhana V.
• Yatsymyrskyi, Andrii V.
• Zakharova, Tetiana M.
• Kostyrko, Elena O.

Titel

Ni-Fe, Co-Fe, and Co-Ni nanocomposites based on carbon nanotubes in the reaction of CO2 methanation

Ist Teil von

• Molecular Crystals and Liquid Crystals, 2021-05, Vol.720 (1), p.38-46

Ort / Verlag

Philadelphia: Taylor & Francis

Erscheinungsjahr

2021

Quelle

Taylor & Francis

Beschreibungen/Notizen

• For effective carbon dioxide (CO 2 ) methanation, bimetallic Co 80 Ni 20 /CNTs, Ni 80 Fe 20 /CNTs, and Co 93 Fe 07 /CNTs nanocomposite catalysts, where subscript numbers indicate the metal content (wt.%), have been prepared with wet impregnation method, further thermal decomposition, and chemical reduction stages using carbon nanotubes (CNTs) as a carrier. The catalysts were characterized using TG, SEM-EDX, argon physisorption, and X-ray powder diffraction methods. The pristine nanotubes demonstrated a slight activity in CO 2 conversion due to the presence of small quantity of Ni. Among the tested nanocomposites the bimetallic Ni 80 Fe 20 /CNTs catalyst showed improved catalytic activity compared to Co 80 Ni 20 /CNTs and Co 93 Fe 07 /CNTs. The SEM-EDX analysis showed not uniform distribution of bimetallic aggregates on carbon nanotubes matrix for Ni 80 Fe 20 /CNTs and Co 93 Fe 07 /CNTs. However, this fact did not affect to catalytic properties of mentioned nanocomposites. Ni 80 Fe 20 /CNTs exhibited high activity in the CO 2 methanation with 88% of CH 4 yield at 350 °С unlike Co 93 Fe 07 /CNTs with 64% of CH 4 yield.