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Ruthenium catalysts supported on SiO 2 , Al 2 O 3 and TiO 2 were prepared by the impregnation method. Temperature-programmed desorption (TPD) method was applied to investigate the kinetics of hydrogen adsorption/desorption on these catalysts. All the TPD results show two-peak profile, except Ru/SiO 2 . The low-temperature peak was assigned to the hydrogen adsorbed...
Precipitated iron oxide samples were characterized using temperature-programmed reduction. H 2 was used as the reduction agents. The two-stage reduction was observed: Fe 2 O 3 was reduced to Fe 3 O 4 and then reduced to metallic Fe. The activation energy for the two reduction steps of iron oxide are 89.13 and 70.412(kJmol -1 ), respectively. The...
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