Enhanced Ammonia Decomposition by Tuning the Support Properties of Ni/Gd_xCe_1-xO_2-δ at 600 °C.

ABSTRACT: Ammonia decomposition is a promising method to produce high-purity hydrogen. However, this process typically requires precious metals (such as Ru, Pt, etc.) as catalysts to ensure high efficiency at relatively low temperatures. In this study, we propose using several Ni/Gd_xCe_1-xO_2-δ catalysts to improve ammonia decomposition performance by adjusting the support properties. We also investigate the underlying mechanism for this enhanced performance. Our results show that Ni/Ce_0.8Gd_0.2O_2-δ at 600 °C can achieve nearly complete ammonia decomposition, resulting in a hydrogen production rate of 2008.9 mmol.g^-1.h^-1 with minimal decrease over 150 h. Density functional theory calculations reveal that the recombi

SUBMITTER: He H 

PROVIDER: S-EPMC10059070 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature