High catalytic activity and stability of palladium nanoparticles prepared by the laser electrodispersion method in chlorobenzene hydrodechlorinationстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Palladium nanoparticles deposited on thermally oxidized silicon and on the carbon support Sibunit
by the laser electrodispersion method are extremely active in the gas-phase hydrodechlorination of chlorobenzene
at 100–200°C. High conversion of chlorobenzene (above 90%) has been achieved with catalysts with an
unusually low metal content (from 10–4 to 10–3 wt %). The cyclohexane-to-benzene ratio in the reaction products
depends on the process duration, palladium content, and support nature. According to X-ray photoelectron
spectroscopy (XPS) data, palladium in the catalysts retains its metallic state over a long time under the reaction
conditions. Possible causes of the high catalytic activity (105
mol (mol Pd)–1 h–1) of the palladium nanoparticles
and their stability to chlorination are discussed.