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A series of activated carbon supported Ru catalysts have been reduced at different temperatures under hydrogen flow, and in some cases under ammonia flow, in order to modify the morphology and the particle size of the metallic active sites. CO chemisorption and transmission electron microscopy have been applied to follow the variations of these particles. The samples have been tested in the ammonia...
Recent results achieved by microcalorimetry of CO adsorption over supported metal catalysts will be reviewed by considering some parameters that control the surface properties of the supported metallic particles. In particular, the effects induced by the nature and the particle size of supported metallic clusters, the conditions of pretreatment, the support materials, the addition of promoters and...
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