Cerium-modified Pt/Al2O3 for NH3 synthesis by NO reduction with H2

Min Hye Jeong,Jungseob So,Jinho Oh,Kyung Min Kim,Ji Hoon Park,Young Woo You,Jin Hee Lee,Iljeong Heo,Young Jin Kim

Applied Surface Science（2023）

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摘要

•The direct synthesis of NH3 from NO and H2 at atmospheric pressure was studied.•Pt/CeOxAl2O3 showed higher NH3 yield than Pt/Al2O3 and other Pt/Ce containing catalysts.•Moderate Pt-Ce interaction induced metallic Pt well-dispersed on CeOxAl2O3.•Small Pt0 particles appeared to be favorable for initiating NO dissociation.•Brønsted acid sites on CeOx may facilitate NH3 desorption at a lower temperature.

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关键词

Nitric oxide, Hydrogen, Platinum, Ceria, Solvent-deficient precipitation

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