Decoupling Electron and Proton Transfer in Noncontact Catalytic Hydrogenation of Nitroaromatics.

ABSTRACT: Understanding the elementary reactions of active hydrogen species and electron transfer mechanisms during catalytic hydrogenation remains a fundamental challenge. This work elucidates electron and proton transfer pathways in nitroaromatics hydrogenation using a noncontact catalytic system. Strong coordination of (hypo)phosphorous acid on Pt/Pd surfaces prevents substrate adsorption while permitting H₂ activation, generating electrons retained on the catalyst and protons solvated in protic solvents. Hydrogenation proceeds via sequential reduction (nitro to nitroso and then to hydroxylamine), governed primarily by electron transfer through conductive carbon supports and secondarily via catalyst interfaces, while proton transfer occurs through protic solvents. Disproportionation do

SUBMITTER: Liang Z 

PROVIDER: S-EPMC12631828 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature