Small polaron carrier density in epitaxial, doped CeO(2) thin films under low oxygen partial pressure was determined from electrochemically-measured capacitance after accounting for interfacial effects and shown to agree well with bulk values.

Chemical looping with oxygen uncoupling (CLOU) is an efficient process for solid fuel combustion CO2 capture. This requires a material that capable of releasing gaseous O2 within high temperature window. Screening was performed reactive CuO-based carriers prepared the CLOU magnetic properties easy separation from ashes. The effects CuO fraction, method preparation (with prior Fe-Mn support or b...

Introduction: In vascularized tissues, such as myocardium, oxygen is supplied by convection of blood through a capillary network and diffusion into the tissue space surrounding each capillary, with the total oxygen content of blood increased by the presence of a natural oxygen carrier, hemoglobin. Most of the current tissue culture systems are limited by diffusional supply of oxygen from the su...

Chemical looping gasification (CLG) is an effective coal utilization technology. In this work, the CLG of bituminite was investigated through fixed-bed batch experiments using NiFe2O4 oxygen carrier (OC) to achieve high-quality syngas. The changes in phase during chemical reaction and mechanism were explored. results show that elevated temperature adding a fraction steam facilitate reaction. Ad...

This communication reports the reduction mechanism and kinetics of CoO-NiO/Al2O3 oxygen carrier using methane as the reduction gas. Kinetics experiments are performed in a novel fluidized bed CREC riser simulator under turbulent fluidized bed reaction conditions. A shrinking-core model is used for the kinetic modeling assuming spherical grains of the oxygen carrier particles. The XRD analysis s...