FTIR study of low-temperature CO adsorption on high surface area tin(iv) oxide: Probing Lewis and Brønsted acidity

DFT study of CO adsorption on Pd-SnO2(1 1 0) surfaces

“…These results are in agreement with FTIR studies of SnO 2 samples at 120 K at low CO pressures which showed an adsorption band at 2210-2196 cm −1 associated to CO bound to a coordinational unsaturated Sn 4+ surface species [40]. These results are in agreement with FTIR studies of SnO 2 samples at 120 K at low CO pressures which showed an adsorption band at 2210-2196 cm −1 associated to CO bound to a coordinational unsaturated Sn 4+ surface species [40].…”

Identifying the Active Oxygen Species in SnO2 Based Gas Sensing Materials: An Operando IR Spectrsocopy Study

“…Both materials show obvious differences in the nature and intensities of the hydroxyl groups: The UD450 material displays a series of vibrations assigned to isolated terminal (3723, 3662 and 3628 cm -1 ) and rooted (3527 and 3485 cm -1 ) hydroxyl groups 20,30,31 . Moreover, the hydroxyl region is dominated by a broad band between 3680 and 2610 cm -1 indicating a high concentration of bridged hydroxyl groups.…”

Alumina-supported cobalt–molybdenum sulfide modified by tin via surface organometallic chemistry: application to the simultaneous hydrodesulfurization of thiophenic compounds and the hydrogenation of olefins

“…On the other hand, the number of free OH groups and Al 3+ sites did not change any more at 1.6 or 2.4 wt.% Sn. Some increase in Lewis acid sites could be explained by the formation of Sn 4+ sites [52]. The decrease of H-bonded OH groups is more pronounced for the highest Sn amount.…”