Key Factor for the Anti-Arrhenius Low-temperature Heterogeneous Catalysis Induced by H Migration: H Coverage over Support

Low-temperature heterogeneous catalytic reaction in an electric field is anticipated as a novel approach for on-demand and small-scale catalytic processes. This report quantitatively reveals the important role of proton coverage on the catalyst support for catalytic ammonia synthesis in an electric field, which shows an anti-Arrhenius behaviour.