Effect of copper and cerium on the performance of Ni-SBA-16 in the partial oxidation of methane
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In this research, the effect of Ce, Cu and Ce–Cu promoters on the performance of Ni/SBA-16 catalyst in partial oxidation of methane reaction was investigated. The Ni/SBA-16 catalyst with 9.1 wt% Ni content without promoter and Ni/SBA-16 catalyst promoted with cerium, copper, copper–cerium with equimolar to nickel content were prepared and their performance in methane partial oxidation reaction were evaluated. The prepared catalysts were characterized by XRD, N2 adsorption and EDX-FESEM analysis techniques. The N2 adsorption isotherms of catalyst samples showed that adding promoters to the Ni/SBA-16 catalyst partly decreased the surface area of catalysts. Furthermore, the results using XRD analysis partly demonstrated dispersion of nickel particle for catalyst Cu-promoted. Also, SEM analysis showed a similar size of nano crystallites in the range of 8–20 nm for all catalyst samples. The results of evaluation of catalytic activities of the catalysts showed high activity of unpromoted and Ce-promoted nickel catalyst in methane conversion (≈ 93%) remained stable for 3 h. The effects of other reaction parameters such as temperature, gas hourly space velocity and molar ratio of the feed were also evaluated and reported.
KeywordsMesoporous SBA-16 Nickel catalyst Partial oxidation of methane Syngas Hydrogen
Authors gratefully acknowledge the financial support of Iran Nanotechnology Initiative Council (INIC).
- 1.Agency IETr, IEA (2010)Google Scholar