(560gr) Annealing Studies of Cobalt Supported on Hydrothermally Synthesised Carbon Spheres for Fischer-Tropsch Synthesis

Carbon spheres (CSs) synthesised by a low temperature (190 ^oC) hydrothermal synthesis method using sucrose as a substrate are reported. The effects of annealing the synthesised CSs at temperature range of 250-800 ^oC under N₂ gas was investigated. Annealing the CSs changed the physical and chemical properties of these materials. BET studies showed that annealing these CSs could increase their surface area from 2.1m²/gto 431m²/g. The CSs were also characterised by TEM, XRD, TGA and Raman spectroscopy. Raman spectra ratios of I_D/I_G, I_D2/I_G, I_D3/I_G, I_D4/I_G and the S-band are reported for the annealed CSs. Co supported on the annealed CS were characterised and evaluated for Fischer-Tropsch synthesis.