La2CuO4 as a Promising Oxygen Carrier for CLOU Process

Abstract

The orthorhombic Ruddlesden-Popper phase La2CuO4±δ with the Cmce space group was obtained by a solid-state reaction route. Thermochemical data were calculated for the reaction of lanthanum cuprate formation Thermogravimetric measurements show the oxygen content is close to stoichiometric. Cyclic CLOU experiment was carried out to determine a specific oxygen capacity (ΔW0 exceeding 3.9%), as well as oxygen nonstoichiometry (δ) of La2CuO4±δ. The combustion rate of methane at 950 °C in the CLOU cycle about 0.5 1/min for one mole of lanthanum cuprate was achieved. © 2020 American Institute of Physics Inc.. All rights reserved.