Pyrolysis kinetics of coal in-situ in pregnated with Fe₂S₃

Pyrolytic reaction kinetics of Daliuta coal (DL) and impregnated in-situ Fe2S3within water and surfactant Hexadecyltrimethyl ammonium bromide (1 631-Br) on the coal have been studied by Thermogravimetry in a pressurized thermobalance. The TG/DTG profiles were obtained at heating rate of 10°C/ min. A comparison for TG/DTG profiles and pyrolytic kinetics parameters were made between raw coal and the coals in-situ leaching by Fe2S3catalyst within water and surfactant 1631-Br. Effects of the surfactant on the coal in-situ impregnated with Fe2S3was analyzed, and Zeta potential of the coal in water and the surfactant were determined. And a first order, kinetic equation was used for pyrolytic kinetic parameters calculation. The results showed that the coal in-situ loaded Fe2S3catalyst had much lower activation energy than the raw coal, especially activation energy for coal leaching in the surfactant was lower than that within water. The kinetic parameters E and A of raw coal and the coal loaded Fe2S3catalyst were calculated.