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The catalytic activity of Cr 2 O 3 , Co 3 O 4 , and CuO for the oxidation of carbon black in various gas compositions is reported. In 10% O 2 in Ar, the carbon black oxidation activity is improved considerably by intensifying the contact between the transition metal oxide (TMO) and carbon black by ball-milling (creation of `tight contact') or impregnation, and...
The oxidation of carbon black in the presence of catalytically active compounds has been studied under isothermal conditions in a flow reactor. In the presence of metal oxides, oxidation rates of the carbon black are found to be up to a few hundred times higher compared with the non-catalysed oxidation. Alkali metal carbonates increase this oxidation rate even up to a factor of over 100 000. The...
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