Catalytic Gasification of Petroleum Coke with Different Ratios of K2CO3 and Evolution of the Residual Coke Structure

The catalytic gasification of petroleum coke with different ratios K2CO3 was investigated by a thermogravimetric analyzer (TGA) using the non-isothermal method. initial, peak, and final temperatures decreased greatly as amount increased, reaction became saturated at concentration K+ higher than 5 mmol/g; further increase in catalyst; rate varied slightly, but no inhibition effect observed. vaporization catalyst confirmed during high temperatures. structural evolution residual carbon conversions examined X-ray diffraction (XRD), Raman spectroscopy, N2 adsorption analyses without catalyst. results showed that crystallite structure presence As conversion more ordered, number aromatic rings decreased, while graphitization degree decreased. Meanwhile, surface area pore volume increased process coke, irrespective However, reactivity did not change much variation reaction.