Modulating depth of 1,2-propanediol oxidation over La(III) doped MCM-41 supported binary Pd and Bi nanoparticles for selective production of C3 carbonyl compounds

Abstract Selective oxidation of bio-based 1,2-propanediol (PDO) to value-added C3 carbonyl compounds has been received great attention. An alternative mesoporous lanthanum doped MCM-41 (LaM) supported bimetallic PdxBiy nanoparticles has been constructed for the selective PDO oxidation. The La doping endows the catalysts with new basic sites, and synergy between Pd and Bi species enhances the catalytic oxidation capacity. Pure MCM-41 supported PdxBiy/M favors catalyzing the deep oxidation of PDO to pyruvic acid, whereas La doped PdxBiy/LaM facilitates the oxidative dehydrogenation of PDO to hydroxyacetone in weak basic aqueous solution (pH