Ultradispersed Diamond As a New Carbon Support for Hydrodechlorination Catalystsстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The properties of palladium and nickel catalysts supported on ultradispersed diamond (UDD)
were studied in the vaporphase hydrodechlorination (HDC) reaction of chlorobenzene and the multiphase
HDC of polychlorobenzenes. The catalysts on UDD exhibited a number of advantages: the vaporphase
HDC of chlorobenzene on Ni/UDD occurred at lower temperatures, and the multiphase HDC of chlo
robenzene, 1,3,5trichlorobenzene, and 2,4,8trichlorodibenzofuran on Pd/UDD occurred more rapidly
than that on catalysts supported on activated carbon. The structure of the catalysts and the electronic states
of the active components were studied using IR spectroscopy, temperatureprogrammed reduction, and
adsorption techniques. It was found that the properties of the catalysts depend on the electronic state of pal
ladium, which depends on its concentration in the sample; the structural properties, which are responsible
for the accessibility of the active surface to adsorption; and the presence of other metal impurities.