Precious-Metal-Free Mo-MXene Catalyst Enabling Facile Ammonia Synthesis Via Dual Sites Bridged by H-Spillover.

ABSTRACT: To date, NH₃ synthesis under mild conditions is largely confined to precious Ru catalysts, while nonprecious metal (NPM) catalysts are confronted with the challenge of low catalytic activity due to the inverse relationship between the N₂ dissociation barrier and NH_x (x = 1-3) desorption energy. Herein, we demonstrate NPM (Co, Ni, and Re)-mediated Mo₂CT_x MXene (where T_x denotes the OH group) to achieve efficient NH₃ synthesis under mild conditions. In particular, the NH₃ synthesis rate over Re/Mo₂CT_x and Ni/Mo₂CT_x can reach 22.4 and 21.5 mmol g^-1 h^-1 at 400 °C and 1 MPa, respectively, higher than t

SUBMITTER: Zhou Y 

PROVIDER: S-EPMC11345764 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature