Selective Production of 1,2‐Propanediol or 1,3‐Propanediol from Glycerol Hydrogenolysis over Transition Metal Doped Pt/TiO<sub>2</sub>
Zhicheng Luo, Zhiguo Zhu, Rui Xiao, Dawang Chu
Abstract
Abstract Selective hydrogenolysis of biomass‐derived glycerol to propanediol is important for producing high value‐added chemicals from renewable resources but faces a huge challenge. Here we report a transition metal doped Pt/TiO 2 catalyst with incorporated Cr, Mo, or W oxides, which exhibits the selective formation of 1,2‐propanediol or 1,3‐propanediol with a yield from 51.2% to 82.5% toward glycerol hydrogenolysis. In situ experimental studies verify that the surrounding CrO x decreases the hydrogenating ability of Pt, leading to the formation of 1,2‐propanediol, while the MoO x or WO x brings the Brønsted acid, giving 1,3‐propanediol. This modification based on the catalyst compositions alters the reaction pathway with a different adsorption and bond scission mechanism, which can be extended to other sustainable catalytic systems.