Structure and catalysis of layered rock-salt type oxides for methane oxidation

Abstract A comparison of X-ray photoemission spectra of LiFeO 2 , LiCoO 2 , and Li x Ni 2− x O 2 for the range of 0 x ≤ 1 have been measured. A main O 1s XPS peak of LiNiO 2 and LiCoO 2 with a hexagonal type was observed at 531.9 eV, while that of LiInO 2 , LiFeO 2 with a tetragonal type and Li x Ni 2− x O 2 ( x 2 and LiCoC 2 largely affected the formation of the active oxygen species for the high selective coupling reaction of methane.