Effect of hydrothermal treatment on the physicochemical characteristics of Pd/C composites prepared via pyrolysis of sawdust impregnated with palladium nitrate

摘要: Palladium supported on carbon (Pd/C) catalysts (0.55–0.65 wt.% of Pd) were synthesized by pyrolysis birch sawdust under inert atmosphere proceeded prolonged impregnation in aqueous solution palladium nitrate. In some cases, hydrothermal treatment (HT) the pristine was conducted to modify specific surface area final material applied as a catalyst support. Based low-temperature nitrogen adsorption technique, it postulated that HT liquid phase increases. while gaseous decreases Pd/C. The obtained contained Pd particles (size ranged from 2 10 nm) both coated and not with shell evidenced XPS TEM techniques. Pd/C composites provide high conversion chlorobenzene selectivity respect benzene hydrodechlorination reaction performed flow fixed-bed reactor presence H2. data for tested catalytic indicate their resistance HCl. A minor part metal found transform into PdCl2 PdO.