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Chemical impurities (principally sulfur) derived from petroleum-based precursor materials can impact the graphitization process by volatilizing during high temperature thermal treatment. In an attempt to eliminate the crystal damage caused by the evolution of sulfur-bearing gases from...
This paper presents the development and validation of a computational scheme for an analysis of activated charcoal-nitrogen adsorption cryocoolers. Using this procedure a comparative analysis of four samples of charcoal is carried out. It is shown that the specific power ( SP ) of the cryocooler...
Activated carbons impregnated with a mixture of copper( ii ), iron( iii ) and chromium( iii ) oxide catalysts were prepared in order to facilitate catalytic regeneration of AC saturated with phenols. The temperature ranges of phenol oxidation ( T p ), carbon oxidation ( T c ) and carbon burn-off...
The carbothermal formation of silicon carbide is studied in the case of carbon fibres coated with a continuous silica film obtained by a solgel process. The paper discusses the influence of the properties of the carbon fibre on the yield, the morphology and the structure of the as-obtained SiC...
The electronic structures of pure and boron-doped graphene layers have been investigated using the semi-empirical Molecular Orbital Package (MOPAC) and large clusters of carbon atoms. It is shown that boron-doping on the edge and internal lattice sites of the graphene layer produces very...
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