Hydrogen (H2) is the lightest known molecule; hence, its compression or liquefaction is highly energy-intensive. One of the promising ways to easily store and transport hydrogen is via the use of chemical carriers such as ammonia (17.8 wt%H2). Synthesis of ammonia, however, accounts for 2% of global energy use and 1.2% of anthropogenic carbon dioxide emissions. So, catalysts play a significant role in mitigating these by lowering the temperature and pressure required for the reaction. In this paper, Arash and his team have studied the fabrication and reactivity of a recyclable catalyst, which offers higher resistance to chemical deactivation. One of the key features in this study is the tunability of the catalyst by ball-milling conditions and exsolution environment. A multi-faceted experimental campaign was carried out, via sophisticated methods such as Atom Probe Tomography, to determine the morphology and the chemistry of the catalyst before and after the reaction.
Read the full article at https://www.hindawi.com/journals/ijer/2023/9919748/.
Badakhsh, A.; Vieri, H.M.; Yoon, S.P.; Choi, S.H. Exsolved Ru on BaCexOy Catalysts for Thermochemical Ammonia Synthesis. International Journal of Energy Research 2023, 14.