Thermal behaviour and microanalysis of coal subbituminus

2nd International Conference on Oleo and Petrochemical Engineering

Heriyanti^1 ; Prendika, W.^1 ; Ashyar, R.^1 ; Sutrisno^1

Department of Chemistry, Faculty of Science and Technology, Jambi University, Kampus Pinang Masak, UNJA Mendalo, Jambi Province, Indonesia^1

关键词: Air atmosphere;    Crystal formation;    Dissociation energies;    DSC experiments;    Subbituminous coal;    Thermal behaviours;    Thermal heating;    XRD analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/345/1/012015/pdf
DOI  :  10.1088/1757-899X/345/1/012015

来源: IOP

【 摘 要 】

Differential scanning calorimetry (DSC) and X-ray powder diffraction (XRD) is used to study the thermal behaviour of sub-bituminous coal. The DSC experiment was performed in air atmosphere up to 125 °C at a heating rate of 25 °C min1. The DSC curve showed that the distinct transitional stages in the coal samples studied. Thermal heating temperature intervals, peak and dissociation energy of the coal samples were also determined. The XRD analysis was used to evaluate the diffraction pattern and crystal structure of the compounds in the coal sample at various temperatures (25-350 °C). The XRD analysis of various temperatures obtained compounds from the coal sample, dominated by quartz (SiO2) and corundum (Al2O3). The increase in temperature of the thermal treatment showed a better crystal formation.