Abstract
Highly dispersed Ru nanoparticles exhibiting high catalytic activity in NH 3 decomposition were prepared by a polyol reduction method. The physicochemical properties were studied using nitrogen physisorption, X-ray diffraction (XRD), transmission electron microcopy (TEM) and thermogravimetry (TG). BET measurements showed the obtained Ru/MgO mesoporous material possessed a surface area as high as 151 m 2 g cat - 1 . As evidenced by TEM images, the particle size of Ru ranged narrowly from 1.2 to 2.3 nm. XRD examination revealed that the MgO particles as the support with mean size of 8 nm were successfully synthesized. Different alkali metal salts were added as the promoter through conventional impregnation, by which the catalytic activity could be significantly enhanced.
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