Fig. 1: Structural change of ZnCr2O4-ZnO mixture induced by syngas treatment.
From: ZnOx overlayer confined on ZnCr2O4 spinel for direct syngas conversion to light olefins
a In situ XRD of ZnCr2O4-ZnO containing 8.0 wt% ZnO during syngas treatment at 450 oC for various time. The bottom black pattern is from the sample before the treatment and the top red pattern from the treated one for 6 h. b Quasi in situ XPS spectra of ZnCr2O4-ZnO, ZnCr2O4@ZnOx, fresh ZnCr2O4 (named ZnCr2O4-F), and treated ZnCr2O4 (named ZnCr2O4-T). c UV-Vis spectra of ZnCr2O4-ZnO, ZnCr2O4@ZnOx, ZnCr2O4-F, and ZnCr2O4-T. EDS mapping images of ZnCr2O4-ZnO (d) and ZnCr2O4@ZnOx (e). Scale bar: 400 nm.
