https://www.sciencedirect.com/science/article/abs/pii/S0926337320309929 Highlights •Mn x Ti 1-x O y shows different acidity and reducibility by adjusting Mn/Ti ratio. •Mn-O-Ti solid solution accounts for more Lewis acidic sites on catalyst surface. • ...
https://www.sciencedirect.com/science/article/pii/S0021951720303183 Highlights •There exists Cr-O-Ti, Cr 2 O 7 2- and (-(O=) 2 Cr-O-) n in Cr x Ti 1-x prepared by sol-gel way. •The incorporation of Cr into TiO 2 promotes strong acidity and re ...