Catalytic Methanation of CO and CO 2 in Coke Oven Gas over Ni–Co/ZrO 2 –CeO 2
Year: 2013
Type: article
Abstract: The methanation of CO and CO 2 present in coke oven gas was performed in a fixed-bed catalytic reactor at a reaction temperature between 200 and 400 °C. Different support materials, including SiO 2, Al 2 O 3, ZrO 2, and CeO 2, were doped with a different percentage of active metals using a standard impregnation and coprecipitation method. The catalysts were characterized using Brunauer–Emmett–Teller analysis, scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and temperature-programmed desorption techniques. The activity of all samples was tested in terms of the percentage of CO and CO 2 conversion and CH 4 selectivity. The results were analyzed on the basis of the difference in the catalytic performance at different active metal loadings and support materials. The effect of the catalytic support on the reducibility, morphology, and active metal dispersion was investigated. The ZrO 2 –CeO 2 -supported catalyst prepared under coprecipitation can attain 100% CO conversion at around 300 °C and ≥95% CO 2 conversion at 400 °C and has a CH 4 selectivity of 99%.
DOI: 10.1021/ie301399z
Language: English
Subfield: Catalysis
Field: Chemical Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2322588385