Catalytic activities of ruthenium (Ru) supported on various carries such as carbons (C), metal oxides (MOx) and Y zeolites for hydrodechlorination of PCB-related compound (chlorobenzene; Cl-B) were investigated in order to develop safety and reasonable treatment of PCB compounds. It was found that Ru supported on acidic carriers such as acidic active carbon, SiO_2・Al_2O_3 and HY showed high activities for HDC of Cl-B. Therefore, we concluded that Ru particle on acidic carrier acts as active site for activation of hydrogen to form spillover hydrogen and acid site on carrier acts as active site for activation of Cl-B in HDC of Cl-B.
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