Efficient low-loaded ternary Pd-In2O3-Al2O3 catalysts for methanol production

A High Pressure Operando Spectroscopy Examination of Bimetal Interactions in ‘Metal Efficient’ Palladium/In2O3/Al2O3 Catalysts for CO2 Hydrogenation

“…Our Pd/In 2 O 3 /Al 2 O 3 contains less In 2 O 3 than undeposited Pd/In 2 O 3 but has similar activity (Figure S4), with improved methanol selectivity (Figure S4B, remaining selectivity is CO), making them of significant interest for CO 2 utilisation [11] . High‐resolution Transmission Electron Microscopy (HRTEM) and Scanning Transmission Electron Microscopy—High‐Angle Annular Dark Field Imaging (STEM‐HAADF) of spent Pd/In 2 O 3 /Al 2 O 3 show an average particle size of 1.3±0.3 nm and STEM/Electron Energy Loss Spectroscopy (STEM/EELS) maps show regions of overlapping Pd and In, suggesting intimate mixing (Figure S5).…”

“…Our Pd/In 2 O 3 /Al 2 O 3 contains less In 2 O 3 than undeposited Pd/In 2 O 3 but has similar activity (Figure S4), with improved methanol selectivity (Figure S4B, remaining selectivity is CO), making them of significant interest for CO 2 utilisation. [11] [7a,12] Initial EXAFS data suggests that the Pd exists as PdO, whereas In exists as In 2 O 3 (Figure 1).…”