Silver- or nickel-loaded activated carbon (AC) catalysts were prepared by impregnation, and subsequent physicochemical pyrolysis and activation by continuous blowing of exhausted gas through the sample and addition of water vapor to the feed. The X-ray diffraction pattern of the catalyst samples included peaks characteristic of metallic Ago and Nio phase. The silver metal particles sized between 20 nm and 250 nm were homogeneously dispersed on the activated carbon surface. The metal loading of the Ni/AC sample did not lead to any agglomeration of the particles suggesting a stronger metal-support interaction and hence a higher degree of dispersion. The activity of the catalyst samples was tested in the heterogeneous catalytic reaction of ozone decomposition at ambient temperature. The Ag/AC and Ni/AC samples exhibited high activity providing almost complete ozone disintegration. The conversion degree was close to 97 % throughout the whole three-hour testing period.
|ジャーナル||Journal of Chemical Technology and Metallurgy|
|出版ステータス||Published - 2016|
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