Electrified dynamically responsive ammonia decomposition to hydrogen based on magnetic heating of a Ru nanocatalystPonikvar, Žiga (Avtor) Sedminek, Anja (Avtor) Teržan, Janvit (Avtor) Skubic, Luka (Avtor) Lavrič, Žan (Avtor) Huš, Matej (Avtor) Grilc, Miha (Avtor) Likozar, Blaž (Avtor) Makovec, Darko (Avtor) Gyergyek, Sašo (Avtor) Storing and transporting pressurized or liquid hydrogen is expensive and hazardous. As a result, safer methods, such as chemical storage in ammonia, are becoming increasingly important. However, the instantaneous start of a conventionally heated decomposition reactor is challenging. Here we report on the electrified and dynamically responsive decomposition of ammonia as a means of releasing on-demand chemically bonded hydrogen based on the rapid magnetic heating of a well-designed Ru-based nanocomposite catalyst. Under relatively mild conditions (400 °C, 1 bar) a rapid decomposition rate of 5.33 molNH3 gRu-1 h-1 was achieved. Experimental observations under non-isothermal, dynamic conditions coupled with modelling at the level of density functional theory and micro-kinetic modeling confirmed the minute-scale response of the H2 release. The rapid response of our catalytic system would, at least in principle, enable the utilization of intermittent, renewable electricity and a tunable H2/NH3 ratio in the reactor’s effluent.Wiley20242025-03-25 13:57:52Neznano21759UDK: 544.3/.4ISSN pri članku: 1864-564XDOI: /10.1002/cssc.202401970COBISS_ID: 217857027ZDAsl© 2024 The Author(s).