Designed sol–gel precursors for atomically dispersed Nb and Pb within TiO₂ as catalysts for dihydroxyacetone transformation

Abstract

New N-methyldiethanolamine-modified metal alkoxides were synthesized and employed as sol–gel precursors to obtain atomically dispersed catalysts with high surface area and tunable acid–base properties.

Metal-doped niobate pyrochlores and double-perovskites for glycerol valorization: structural and electronic properties and DFT calculations

“…The FTIR spectra of all samples exhibit a broad band at around 3600 cm −1 and a weaker one at 1614 cm −1 assigned to the symmetric ν s(O–H) and bending δ (O–H) of the physically adsorbed water present in the solids. 44…”

“…The FTIR spectra of all samples exhibit a broad band at around 3600 cm −1 and a weaker one at 1614 cm −1 assigned to the symmetric νs(O-H) and bending δ(O-H) of the physically adsorbed water present in the solids. 44 Besides, the absorption bands at around 860 and 614 cm −1 correspond to the niobium-oxygen vibrations. Particularly, the first absorption band emerges from the isolated NbO x surface species vibrations of long NbvO bonds and also from the νs (Nb-O-Nb) modes in polymerized NbO x species.…”

Dihydroxyacetone: A User Guide for a Challenging Bio-Based Synthon

“…Since the conversion of MGO to LA has been known for a long time [ 127 ], the limiting step in this process was the conversion of DHA to MGO, as shown by several studies on the kinetic parameters of this reaction [ 119 , 120 , 121 , 128 ]. This synthesis route is currently a trend of interest for several research teams, as interesting results have been obtained using highly efficient and recyclable Lewis-acid catalysts [ 118 , 119 , 120 , 121 , 128 , 129 , 130 , 131 , 132 , 133 , 134 , 135 ].…”