ZrO2 support imparts superior activity and stability of Co catalysts for CO2 methanation

Recent Developments in the Modelling of Heterogeneous Catalysts for CO2 Conversion to Chemicals

“…CO 2 methanation can reach 99 % CH 4 selectivity through the use of appropriate catalysts, avoiding the subsequent product separation and overcoming the difficulty of dispersed product distribution. [19] The most studied noble and nonnoble metalbased catalysts for CO 2 methanation are Ni, [100][101][102] Ru, [103][104][105] Rh, [106,107] Pd, [108,109] Co, [110,111] Fe, [112,113] Cu, [114,115] Pt, [116] Ag [39] and Au [39] catalysts from which the most important role to methanation process has Ru, Fe, Ni, and Co. [39,117] According to the various studies the activity performance and selectivity of different metal-based catalysts decreases in the following order: [118] Ni and Ru are reported to have maximum activity and stability. [119] Ni based catalysts are very effective due to the presence of easily transferable electrons in the frontier d orbitals and therefore are the most efficient and active catalytic system together with alumina as a support that may be applied on industrial scale.…”

“…DFT calculations were carried out for CO 2 adsorption on Fe (100), (110), (111) and (211) surfaces. Also, several studies examined H 2 adsorption and dissociation on Fe surfaces to determine the most effective H 2 : CO 2 ratio for the activation of the reagents.…”

Carbon Dioxide Reduction with Hydrogen on Carbon‐Nanotube‐Supported Catalysts under Supercritical Conditions

“…The only publication related to Co/CNT system shows the data on the activity in CO 2 methanation . It is noteworthy that the carbon‐based Co catalysts have been studied in the reaction of CO 2 hydrogenation at atmospheric or slightly increased pressures (15–20 atm) . The productivity of the Co‐catalysts prepared using oxide supports (mesoporous alumina, mesoporous silica of the KIT‐6 type, and zirconia) was found to be usually higher than that of carbon‐based systems …”

“…The Fe/CNT catalyst achieved the highest olefin selectivity of 11%. Cobalt‐containing catalysts demonstrate a different behavior in CO 2 hydrogenation depending on 1) the nature of the carrier, 2) the size of the metallic cobalt nanoparticles, and 3) presence/modification with a second metal …”

A Highly‐Efficient KF‐Modified Nanorod Support Zr−Ce Oxide Catalyst and its Application

“…The ZrO 2 supported sample show three clear diffraction peaks centering at 2 θ =31.5°, 38.5°, 55.8°, which are typical for the zirconia with monoclinic phase (JCPDS card No. 37‐1484) . The diffraction peaks at 2 θ =30.3°, 34.8°, 35.3°, 50.4°, 59.6°, 73.8°, 82.5° are attributed to zirconia with tetragonal phase (JCPDS card No.17‐0923) .…”