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Fine-grained B 4 C-SiC/C composites were fabricated using a ball-milling dispersion process. The oxidation behaviors of both fine-grained B 4 C-SiC/C composites and coarse-grained B 4 C-SiC/C composites at temperatures of up to 1400 o C were analyzed by the differential thermal analysis technique, and the surface morphology of the composites after isothermal oxidation...
This paper deals with the effects of physical structures and chemical properties of the catalysts, activated semi-cokes, on SO 2 removal activity. The catalysts were characterized in terms of physical structures-specific surface area, pore volume and pore size-and chemical properties-acidity and basicity. Results show that the presence of basic groups on the catalyst surface is a precondition...
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