Effective Pd/C catalyst for chlorobenzene and hexachlorobenzene hydrodechlorination by direct pyrolysis of sawdust impregnated with palladium nitrateстатья
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Дата последнего поиска статьи во внешних источниках: 22 февраля 2016 г.
Аннотация:Two Pd/C catalysts were prepared by pyrolysis of Pd(NO3)2 impregnated sawdust. At equal
pyrolysis time slow ramping with shorter isothermal heating resulted in 0.9 wt.% Pd/C-S1 sample
comprising carbon support with some oxygen-containing moieties and Pd0 with 2.6 nm average
particle size (APS) partially decorated with carbon shell, whereas fast temperature ramping and
long isothermal heating provided 0.6 wt.% Pd/C-S2 containing Pd0 with 3.7 nm APS, with larger
fraction of carbon decorated particles. Pd/C-S1 is slightly more efficient than Pd/C-S2 in gas phase
chlorobenzene hydrodechlorination to benzene at 100–250ºC. Only Pd/C-S1 provides
hexachlorobenzene hydrodechlorination in liquid phase due to lower APS and probably smaller
PdCx content.