Kinetics of Metal Oxide-Catalyzed CO_2 Gasification of coal in a Fluidized-Bed Reactor for Solar Thermochemical Process

摘要

Metal oxide-catalyzed CO_2 gasification of coal was examined in a small-scale fluidized-bed reactor at 1073-1223 K and at atmospheric pressure, for the purpose of converting solar high - temperature heat to chemical fuels. The metal oxide powder of In_2O_3, ZnO, or fe_2O_3 in th grain sizes of 4-9 μm was simply mixed with the ground bituminous coal (grain size <300μm) and the catalytic effects of the metal oxide on the Boudouard reaction (C-CO_2 reaction) in the coal gasification were kinetically studied.