Herein, hierarchical bifunctional catalysts of Sn-USY-supported Au nanoparticles were designed for the one-pot conversion of glycerol (GLY) to methyl lactate (MLA). Over Au/Sn-USY catalyst, 79% MLA yield can be obtained with a high selectivity (∼90%). The promotion effect of Sn was investigated, and the interaction between extraframework SnO x and Au was confirmed by TEM, pyridine-FT-IR, CO-FT-IR, and XPS. The interaction promotes the dispersion of Au particles (smaller and much more uniform). This is important for the oxidation of GLY to 1,3dihydroxyacetone (DHA) and glyceraldehyde (GA), which are the intermediate species for the conversion of GLY to MLA. Meanwhile, introduction of Sn modified the acid properties of the catalyst, which are critical for the selective conversion of DHA and GA to MLA.
Using a laser monitoring observation technique, the solubilities of p-aminophenol in sulfuric acid + water
have been determined experimentally from 286.15 K to 362.80 K. The experimental data were correlated
with the modified Apelblat equation. The calculated results showed good agreement with the experimental
data.
To provide thermodynamic data for isonicotinic acid production, the solubilities of isonicotinic acid in water and 4-methylpyridine binary solvent mixture were determined from (287.65 to 361.15) K with the solvent mole fraction composition ranging from 0.00 to 1.00. The experimental data were correlated with the modified Apelblat equation. The calculated results show good agreement with the experimental data.
The solubilities of 2-methyl-1,4-naphthoquinone in water + (methanol, ethanol, 1-propanol, 2-propanol, 1,2-propanediol, and glycerin, respectively) have been determined experimentally from (293.15 to 337.92) K by balanced
method. The experimental data were correlated with the modified Apelblat equation.
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