Bond-oriented selective hydrogenation of unsaturated aldehyde by the tailoring of electronic metal-support interaction
Year: 2025
Type: article
Abstract: The charge transfer between metal sites and support, widely known as electronic metal-support interaction (EMSI), is an impacting factor for the tailoring of the electronic structure of the hosted metal sites. Herein, the bond-oriented selective hydrogenation of α-methylacrolein has been observed over the Ag/SiO 2 and doped counterparts of Ag/SiZrO x , wherein the catalytic selectivity primarily relies on the electronic state of metal Ag sites. In the absence of electronic perturbation, the metal Ag 0 sites supported on the relatively inert SiO 2 exhibit the specific π-bonding configuration of chemisorbed intermediate, accounting for the C O bond-oriented hydrogenation for the methallyl alcohol. As a comparison, the distinct EMSI are observed over the doped Ag/SiZrO x and stimulates the state of electron-positive Ag δ+ sties. As a consequence, the specific δ-bonding configuration with the enhanced chemisorption strength is probed over the Ag δ+ sites, which contributes to the conjugated C C bond-oriented hydrogenation for isobutylaldehyde. These findings lay new fundamental basis on the selective hydrogenation of different unsaturated bonds of the multiple unsaturated molecules, and enrich the tool-box for the rational design of the heterogeneous catalysts for the bond-oriented selective hydrogenation of α,β-unsaturated aldehydes.
Source: Chemical Engineering Journal
Authors: Lin Ai, Peidong Li, Hui Ding, Yutong Jiao, Fang Lu, Jiaxu Liu, Xiao-Feng Wu, Shengjun Huang
Language: English
Subfield: Organic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,830
OpenAlex ID: W4413622236