Graphitized carbon blacks have been less used as catalyst supports than other carbon materials, as they are characterized by low pore volume and specific surface area. They have been mainly explored as catalyst supports in the fuel cell field, especially in the oxygen reduction reaction, where the graphitized carbon black led to improve the catalysts stability due to their enhanced resistance to corrosion [1], These materials have also been used in the methanol oxidation reaction, and to a lesser extent in other reactions such as CO hydrogenation. Hydrodechlorination (HDC) is a technique intended to deal with toxic chlorinated organic compounds that show some advantages when compared to other treatments such as separation or oxidation [2]. However, studies on catalysts based on graphitized carbon black supports in HDC are scarce, and no conclusive agreement about the effect of the characteristics of these supports on catalyst behavior was found. In this work, Pd/C catalysts based on carbon black and carbon black-like supports (raw and graphitized) were tested in aqueous-phase HDC of 4-chlorophenol (4-CP). The effect of support on catalytic behavior was assessed to acquire knowledge for rational design of catalysts.
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