ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 36, Number 1
JKCSEZ 36(1)
February 20, 1992 

Supported lead oxide catalysts were prepared by using α-,β-&γ-alumina, and MgO as a support. Among the supported lead oxide catalysts, MgO-supported catalyst showed the highest C₂⁺ hydrocarbon selectivity for the methane conversion into C2+ hydrocarbons, but γ-alumina-supported PbO catalyst gave the highest CO2 selectivity. And α-alumina-supported catalyst showed the medium activity, whereas β-alumina-supported catalyst gave little activity. These reaction characteristics seemed to be largely dependent on the activity of lattice oxygens in supported catalysts, which would be influenced in the interaction between the supports and lead oxides and the properties of supports. Especially, much higher ratio of (002)/(111) peak intensities for PbO phase on MgO support than on the other supports in X-ray diffraction analysis was considered to be an evidence that methane oxidative coupling of methane might be so-called structure-sensitive reaction, and this seemed to be an example of surface oxide-support interaction (SOSI) in the oxidative coupling reaction.