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Paving the way for ammonia as a marine fuel: insights into the IMO’s Interim Guidelines
Article

Paving the way for ammonia as a marine fuel: insights into the IMO’s Interim Guidelines

Andrea Guati Rojo January 27, 2025

To explore the interim fuel guidelines and discuss their implications, we were joined by the IMO and Lloyd’s Register. Properly applied, the new fuel guidelines will ensure that ammonia systems achieve safety standards comparable to those of LNG or other alternative fuel systems, with special provisions made to ensure that ammonia’s hazards are effectively managed well within acceptable risk thresholds.

Ammonia Energy Conference 2024: Ammonia for Maritime Propulsion is full speed ahead!
Article

Ammonia Energy Conference 2024: Ammonia for Maritime Propulsion is full speed ahead!

Kevin Rouwenhorst November 26, 2024

During the recent 2024 Ammonia Energy Conference, we explored all the latest developments in ammonia-powered maritime propulsion. Engine makers reported strong progress ahead of deployment in 2026, the same year that large-scale vessels will hit the water. The panel explored early operations for the ammonia-powered A-Tug in Japan, as well as ancillary technology systems required for maritime ammonia engines, catalyst after-treatment systems for emission mitigation, and the potential for fuel additives to boost ammonia engine performance.

Sunborne reborn!
Presentation

Sunborne reborn!

Bill David

Despite successfully demonstrating 56kW of controlled combustion of partially cracked ammonia in October 2023, Sunborne Systems was unable to secure Series A funding at the beginning of 2024. Since then, the co-founders have secured UK government funding to tackle two of the challenges set out for Series A funding: to further develop their patented catalysts and to address issues associated with ammonia slippage and NOx emissions. Future opportunities will be discussed.

How to give a chemical push to ammonia in a compression ignition engine?
Presentation

How to give a chemical push to ammonia in a compression ignition engine?

Anne-Gaëlle Morin

The initial work on direct additivation to ammonia in a Rapid Compression machine showed promising results and radical ignition delays and temperature reduction. From these tests on, tests conducted on a research mono-cylinder engine, with the help of the Prisme laboratory at the University of Orléans, demonstrated that the additive used in pilot fuels allowed for better controlled ignition than the pilot fuel alone, better and eased cycle to cycle stabilization and better power output. It also quite dramatically reduced the amount of pilot fuel needed. It seems that the additive helps to keep ammonia in the combustion event even…