CO 2 absorption characteristics of a Li 2 TiO 3 blanket material under atmospheric exposure

Abstract Non-Rutherford backscattering spectroscopy (NRBS) for the composition analysis and X-ray diffraction (XRD) for the crystallographic structure analysis have been applied to the blanket candidate material, Li 2 TiO 3 , which is known to absorb CO 2 though chemically stable. It is found that the amount of CO 2 absorbed by atmospheric exposure of the low- and medium-density samples is greater than or comparable to that by dry CO 2 gas exposure. By varying the density of the Li 2 TiO 3 and composition of the ambient gas, conditions to minimize the amount of CO 2 absorbed are discussed.