Duiker to pilot ammonia cracking system at Port of Rotterdam

The Dutch engineering company claims the new system, named Ammonex, could be utilised to streamline ammonia-to-hydrogen operations.

The pilot will be carried out at Plant One, a specialised facility in the Port of Rotterdam which serves as a commercial testbed for sustainable industrial technologies.

It will consist of two testing campaigns, one aimed at validating operational capabilities and a second focused on long-term testing. Results are expected in 2027.

Duiker says the system, which reached final investment decision in early 2025, produces zero-emissions and achieves high efficiency and longevity.

In development since 2022, Ammonex has received funding from investors, including the EU’s Just Transition Fund.

Mark van Welsen, Managing Director of Duiker Clean Technologies, said the agreement with Plant One marks an important step in the product’s realisation.

“The pilot enables us to validate our technology in practice and make a concrete contribution to sustainable hydrogen value chains.”

With high energy density, liquid storage, and use of existing infrastructure, ammonia is appealing to hard-to-abate industries such as maritime and major companies have been exploring ammonia cracking concepts.

In 2025, Uniper and Thyssenkrupp Uhde agreed to jointly develop a 28-tonne-per-day ammonia-to-hydrogen cracker.

This was followed by Air Liquide commissioning its own 30-tonne-per-day facility at the Port of Antwerp-Bruges in November.

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