Development of nickel catalysts supported on TiO2 for ammonia decomposition
Othman AL-AMODI, Muhammad TAHIR, Abdulrahman ALRAEESI
Abstract. Ammonia is emerging as a promising carbon-free hydrogen carrier due to its high hydrogen density, established distribution infrastructure, and potential role in facilitating a sustainable energy transition. The efficient catalytic decomposition of ammonia into hydrogen and nitrogen is important for utilizing its potential in low-carbon energy systems. This study synthesized and evaluated nickel catalysts supported on TiO2 (xNi/TiO2, where x = 5–20 wt%) for the thermal decomposition of ammonia. The catalytic activity, quantified as the percentage of hydrogen production from the outlet gas composition measured by gas chromatography based on ammonia decomposition stoichiometry, exhibited a significant correlation with Ni loading: TiO2 (13.42%), 5Ni/TiO2 (20.8%), 10Ni/TiO2 (31.1%), 15Ni/TiO2 (22.7%), and 20Ni/TiO2 (22.8%). Of the evaluated formulations, 10Ni/TiO2 exhibited the superior performance, underscoring an optimal dispersion–loading equilibrium for active site utilization. These findings emphasize the promise of Ni/TiO2 systems as abundant and economical catalysts for hydrogen production from ammonia. This study advances the objectives of ICCAS-2025 by showcasing catalytic materials that facilitate low-carbon initiatives and sustainable development via green hydrogen production.
Keywords
Ammonia Decomposition, Hydrogen Production, Ni/TiO2 Catalyst, Ni Loading
Published online 6/20/2026, 8 pages
Copyright © 2026 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Othman AL-AMODI, Muhammad TAHIR, Abdulrahman ALRAEESI, Development of nickel catalysts supported on TiO2 for ammonia decomposition, Materials Research Proceedings, Vol. 67, pp 423-430, 2026
DOI: https://doi.org/10.21741/9781644904176-57
The article was published as article 57 of the book Climate Action and Sustainability
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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