Multiple reaction pathway on alkaline earth imide supported catalysts for efficient ammonia synthesis.

ABSTRACT: The tunability of reaction pathways is required for exploring efficient and low cost catalysts for ammonia synthesis. There is an obstacle by the limitations arising from scaling relation for this purpose. Here, we demonstrate that the alkali earth imides (AeNH) combined with transition metal (TM = Fe, Co and Ni) catalysts can overcome this difficulty by utilizing functionalities arising from concerted role of active defects on the support surface and loaded transition metals. These catalysts enable ammonia production through multiple reaction pathways. The reaction rate of Co/SrNH is as high as 1686.7 mmol·g_Co^-1·h^-1 and the TOFs reaches above 500 h^-1 at 400 °C and 0.9 MPa, outperforming other reported Co-based catalysts as well as the benchmark

SUBMITTER: Li Z 

PROVIDER: S-EPMC10567757 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature