CuO-ZnO-ZrO2 catalysts were synthetized by co-precipitation synthesis. Copper content in was kept constant (30 wt% of Cu °) and ZnO gradually substituted ZrO2 the support to have a greater understanding support’s effect find optimal ZnO/ZrO2 ratio. These fully characterized then tested methanol synthesis via CO2 hydrogenation. The effects reaction temperature GHSV on catalytic behavior investig...

The full text of the article will be published in English version journal "Catalysis Industry" No. 1, 2023. iron-based catalysts were prepared via wet-impregnation method. composition final iron catalysts, regarding to weight ratio is as follow 14%Fe/γ-Al 2 O 3 , 14%Fe/3%Cu/γ-Al 14%Fe/3%Sn/γ-Al and 14%Fe/3%Cu/1%Sn/γ-Al . characterized using XRD, ICP, BET, H2-TPR, FE-SEM EDX techniques. catalyti...

CO2 methanation was studied on Ni-based yttria-stabilised zirconia (Ni/YSZ) catalysts. The catalysts were prepared by the wet impregnation method, where amount of Ni content varied from 5% to 75%. Thereafter, analysed BET, XRD, SEM and H2-TPR. BET results showed an initial increase in surface area with loading, then a decrease after 30% loading. XRD revealed that crystallite size increased as l...

CO2 methanation has been evaluated as a means of storing intermittent renewable energy in the form of synthetic natural gas. A range of process parameters suitable for the target application (4720 h-1 to 84 000 h-1 and from 160oC to 320oC) have been investigated at 1 bar and H2/CO2 = 4 over a 10 % Ru/γ-Al2O3 catalyst. Thermodynamic equilibrium was reached at T ≈ 280oC at a GHSV of 4720 h-1. Cyc...

the influence of mo particle size on the catalytic activity and product selectivity of alkalized mos2 nanocatalysts has been investigated. nanocatalysts are prepared using a microemulsion technique with water-to-surfactant ratios of 1-12. three different techniques, including xrd, tem, and hydrogen chemisorption were used to determine the molybdenum average particle size and their activity and ...

Three vanadium-based catalysts were used to remove high concentrations of nitrogen oxides, and the catalysts’ performance de-NOx anti-H2O under NOx investigated. The V-Mo-W/TiO2 tested 1500 mL/min gas flow (GHSV = 500 h−1, 2.4% NO2, 4.78% NH3, 13% O2, 4% H2O, 5% CO2) characterized by BET, SEM, EDS, XRD, XPS, H2-TPR, NH3-TPD; then, their physical chemical properties analyzed. results showed that...

The present research focuses on a Ni-Mg-Al hydrotalcite-derived catalyst promoted with Cu. Catalysts were prepared by the co-precipitation method at constant pH and subsequently characterized via XRD, H2-TPR, CO2-TPD, TGA, XAS, TEM, low-temperature nitrogen sorption tested for CO2 hydrogenation to methane. methanation reaction was carried out GHSV of 12,000 ml?g-1 h-1 high selectivity (above 98...

Reactive separations of CO/CO2 mixtures are a promising pathway to lower the energy requirement CO2 hydrogenation chemicals and fuels, with applications in U.S. Navy’s seawater-to-fuel process. With feedstock, challenge is activating CO produce heavier hydrocarbons while preventing methanation, requiring low-temperature Fischer-Tropsch synthesis (FTS) catalysts. In this work, we demonstrate tha...