Fig. 3: Surface structure of ZnCr2O4@ZnOx catalysts.
From: ZnOx overlayer confined on ZnCr2O4 spinel for direct syngas conversion to light olefins
a HRTEM images of ZnCr2O4@ZnOx−15. Scale bar: 2 nm. b STEM-EELS mapping images of ZnCr2O4@ZnOx−15. Scale bar: 2 nm. c Elemental composition of Zn and Cr obtained from the line-scan along the yellow line in (b) by EELS. d STEM-EELS mapping images of ZnCr2O4@ZnOx−30. Scale bar: 20 nm. e Elemental composition of Zn and Cr obtained from the line-scan along the yellow line in (d) by EELS. f HS-LEIS spectra of ZnCr2O4@ZnOx catalysts.
