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Polyacrylonitrile (PAN) and PAN/carbon nanotube (CNT) based carbon fibers at various CNT content have been processed and their structural development was investigated using high resolution transmission electron microscope (HR-TEM). In CNT containing carbon fibers, the CNTs act as templating agents for the graphitic carbon structure development in their vicinity at the carbonization temperature of...
The potential of activated carbon fibre-phenolic resin composites for CO 2 capture has been evaluated in this work. A number of composites were fabricated using different types of carbon fibre under various conditions. The effect of a range of variables such as the type of carbon fibre, mass ratio of carbon fibre to phenolic resin, activation temperature and duration on the CO 2 adsorption...
The variation of the pore structure of several coal chars during gasification in air and carbon dioxide was studied by argon adsorption at 87 K and CO 2 adsorption at 273 K. It is found that the surface area and volume of the small pores (<10 Å) do not change with carbon conversion when the coal char is gasified in air, while those of the larger pores (10-20 Å, 20-50 Å, 50-2500 Å) increase...
The effect of heat treatment on the structure of an Australian semi-anthracite char was studied in detail in the 850-1150 o C temperature range using XRD, HRTEM, and electrical resistivity techniques. It was found that the carbon crystallite size in the char does not change significantly during heat treatment in the temperature range studied, for both the raw coal and its ash-free derivative...
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