Effects of Organic Compounds on Ni/AlLaCe Catalysts for Ammonia Decomposition to Hydrogen

• DOI: 10.1021/acs.iecr.3c04390
• Publication Date: 2024-02-22T17:01:12Z
• Authors: Honglin Hu; Ziao Tu; Xiteng Yan; Xiaohan Chen; Li Zhou; Zhang-Hui Lu; Runping Ye; Gang Feng; Rongbin Zhang

Ammonia has attracted extensive attention from scholars due to its high energy density and hydrogen content. In this work, we synthesized a series of Ni-based catalysts by an impregnation method investigate the influence organic compounds on Ni/AlLaCe for NH3 decomposition. The effects different like β-cyclodextrin (β-CD), citric acid (CA), poly(vinylpyrrolidone) (PVP) catalyst structure performance have been examined through characterizations. Experimental results indicated that significantly affects size active metal particles promotes metal–support interaction compared other compounds. At same time, introduction increased number strongly basic sites oxygen vacancies catalyst. Among tested, NALC-60CA sample demonstrated conversion 99.7% ammonia decomposition at gas hourly space velocity 30,000 mL·h–1·g–1 temperature 600 °C. Additionally, exhibited good stability during 55 h activity test 525