High temperature air separation by perovskite-type oxide sorbents–Heat effect minimization

摘要: Abstract Oxygen sorption on perovskite-type oxides can be advantageously used for air separation at high temperature. The large heat of oxygen these oxide sorbents presents a major challenge the management process in practical applications. This paper reports method to minimize effects by taking advantage an endothermic vacancy order–disorder phase transition accompanying sorbents. isotherms, diagram, exothermic sorption, and La 0.1 Sr 0.9 Co Fe O 3 - δ were measured simultaneous TGA/DSC XRD. conditions zero apparent are determined. If partial pressure change adsorption temperature controlled such that they give amount, which is numerically equal ratio net released from step minimized or negligible. strategy effect minimization demonstrated with results measurements different operating fixed-bed packed sorbent.