ZnO NANOPARTICLE DEPENDENT NON-ISOTHERMAL PYROLYSIS OF ASSAM COAL (INDIA). PART II: THERMODYNAMIC STUDY
Keywords:
Coal pyrolysis, ZnO nanoparticles, activation energy, thermodynamic parameters).Abstract
Non-isothermal pyrolysis of coal of varying sizes, in presence of ZnO nanoparticles, have been carried out in this study. Activation energy values for raw coal and blended coal samples were determined and these values were used for the evaluation of thermodynamic parameters. In most of the ZnO blended coal samples, the activation energy values are higher than the unblended coal samples revealing role of nanoparticles on more thermal stability of the coal molecule. Moreover, during the pyrolysis process, association reactions were quite likely to take place. Thermodynamic studies reveal endothermic behaviour, low randomness and non-spontaneous nature of the pyrolysis process. This work has some technological interest.
