Lattice-Stabilized Chromium Atoms on Ceria for N₂O Synthesis.

ABSTRACT: The development of selective catalysts for direct conversion of ammonia into nitrous oxide, N₂O, will circumvent the conventional five-step manufacturing process and enable its wider utilization in oxidation catalysis. Deviating from commonly accepted catalyst design principles for this reaction, reliant on manganese oxide, we herein report an efficient system comprised of isolated chromium atoms (1 wt %) stabilized in the ceria lattice by coprecipitation. The latter, in contrast to a simple impregnation approach, ensures firm metal anchoring and results in stable and selective N₂O production over 100 h on stream up to 79% N₂O selectivity at full NH₃ conversion. Raman, electron paramagnetic resonance, and in situ UV-vis spectroscopies reveal that

SUBMITTER: Yang Q 

PROVIDER: S-EPMC10728900 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature