Carbon-Supported Palladium–Cobalt Catalysts in Chlorobenzene Hydrodechlorination

摘要: Bimetallic and monometallic composite materials containing ultra-microporous carbon, the structure of which is similar to that activated Pd0, CoO, possibly PdCoO2 nanoparticles are synthesized via pyrolysis sawdust impregnated with a solution palladium nitrate cobalt nitrate. According TEM, size distribution metal-containing particles in bimetallic catalysts slightly broader than one catalysts, average particle former larger latter. Some localized on support surface, while others pressed into matrix or coated carbon shell. exhibit high stability activity gas-phase chlorobenzene hydrodechlorination (HDC) form mostly benzene; presence all cobalt-containing conversion greater 85% throughout investigated range temperatures (150–300°C). XPS shows during HDC, metals chlorinated shells metal partially degraded under action hydrogen chloride. This accompanied by emergence active catalyst’s surface. Introducing helps reduce deactivation catalysts’ palladium-containing sites ensures formation additional based CoO.