Introduction

Kinetic and mechanistic analysis of NH3decomposition on Ru(0001), Ru(111) and Ir(111) surfaces

“… 1 Molecular hydrogen is recognized as an energy vector to drive sustainable growth; nevertheless, it presents high risks and cost associated with its transport and storage. 2 Alternatively, ammonia (NH 3 ) is a suitable carbon-free molecule to store H 2 , as its decomposition produces only H 2 and N 2 . 3,4 It is easy to transport and store as it is liquid at room temperature under low pressure.…”

Spiers Memorial Lecture: Catalytic activation of molecular nitrogen for green ammonia synthesis: introduction and current status

“…24 According to this plot, the optimal catalysts are group 8 elements (Fe, Ru, and Os), each of which was already demonstrated to be effective (Os was the catalyst Haber used for his first successful ammonia synthesis). 1–4 Molybdenum is located in a non-optimal region because its interaction with N is too strong, but its combination with Co from the opposite side of the plot, in the form of the intermetallic phase Mo 3 Co 3 N, 22 provides higher activity, demonstrating the validity of this volcano relation. However, since in practice NH 3 synthesis is carried out at high pressures to enhance the formation rate and the outlet concentration of NH 3 , this is an obstacle that needs to be overcome.…”

Mini Review of Ammonia for Power and Propulsion: Advances and Perspectives

“…1,4,87,91−100 There are also review articles listing studies on boilers and furnaces employing NH 3 . 1,[88][89][90]100 The reader is also referred to the book by Valera-Medina and Banares-Alcantara 100 published in 2020 for techno-economic analyses of NH 3 as an energy vector, as the present review focuses on studies detailing actual measurements or advanced numerical simulations in practical devices. Table 2 lists some of the studies featuring practical devices that are too recent to be featured in the aforementioned review articles.…”