Selective catalytic oxidation of ammonia to nitric oxide via chemical looping.

ABSTRACT: Selective oxidation of ammonia to nitric oxide over platinum-group metal alloy gauzes is the crucial step for nitric acid production, a century-old yet greenhouse gas and capital intensive process. Therefore, developing alternative ammonia oxidation technologies with low environmental impacts and reduced catalyst cost are of significant importance. Herein, we propose and demonstrate a chemical looping ammonia oxidation catalyst and process to replace the costly noble metal catalysts and to reduce greenhouse gas emission. The proposed process exhibit near complete NH₃ conversion and exceptional NO selectivity with negligible N₂O production, using nonprecious V₂O₅ redox catalyst at 650 ^oC. Operando spectroscopy techniques and density fun

SUBMITTER: Ruan C 

PROVIDER: S-EPMC8821626 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature