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Catalytic activity of Ni‐Co supported metals in carbon dioxides methanation
Author(s) -
Frontera Patrizia,
Malara Angela,
Modafferi Vincenza,
Antonucci Vincenzo,
Antonucci Pierluigi,
Macario Anastasia
Publication year - 2020
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.23780
Subject(s) - methanation , catalysis , thermogravimetric analysis , bimetallic strip , cobalt , materials science , carbon monoxide , differential scanning calorimetry , nickel , temperature programmed reduction , chemical engineering , inorganic chemistry , nuclear chemistry , chemistry , metallurgy , organic chemistry , physics , engineering , thermodynamics
This work deals with the catalytic performance of nickel‐cobalt supported on ceria‐doped gadolinia (GDC) catalyst in the single and in the simultaneous methanation of carbon monoxide and carbon dioxide. The catalysts have been prepared by impregnation method, starting from metal salts precursors. Samples have been characterized by x‐ray diffraction (XRD), thermogravimetric analysis and differential scanning calorimetry (TGA‐DSC), hydrogen temperature programmed reduction (TPR‐H 2 ), transmission electronic microscopy (TEM), and scanning electron microscopy (SEM/EDX) technique. The temperature examined for methanation tests ranged from 200°C‐600°C. The results show that the prepared and optimized catalysts possess the main characteristics of materials suitable for SOECs (solid oxide electrolyzer cells) applications: high metal content (50% wt/wt with respect to the support), high activity, and high stability. The catalytic performance of bimetallic catalysts highlights that the cobalt does not improve the activity of the nickel catalysts.