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Engie, Siemens, Ecuity, and STFC publish Feasibility of Ammonia-to-Hydrogen

The UK’s Department for Business, Energy and Industrial Strategy (BEIS) recently published the feasibility study for its Ammonia to Green Hydrogen Project. This studies the techno-economic feasibility of importing green ammonia in order to supply large volumes of high-purity low-carbon hydrogen in the UK. The project has been designed and delivered by a heavyweight consortium of ENGIE, Siemens, Ecuity Consulting, and the UK’s STFC. The feasibility study, which is publicly available, represents the conclusion of Phase One of this project. Phase Two is demonstration: “to raise the TRL of a lithium imide based ammonia cracker from 4 to 6/7,” meaning that the technology is ready for deployment.

Article

Hydrogen Filling Stations: techno-economic analysis of on-site ammonia reforming and H2 purification

This month, a team of researchers from Fuzhou University in Fujian, China, published a new paper in the journal Sustainable Energy & Fuels that provides a “Techno-economic analysis and comprehensive optimization of an on-site hydrogen refuelling station system using ammonia.” The study concludes that “the H2 production cost of the NH3-fed on-site hydrogen refuelling station was at least 15% lower than other carbon-free routes (such as electrolysis, solar thermolysis, photo-electrolysis, etc.), and comparable to that of a methane steam reforming system with carbon capture and storage.”

Paper

Ammonia As Hydrogen Carrier to Unlock the Full Potential of Green Renewables

For decades, grid-scale energy storage has been used to balance load and demand within an energy generation system composed mainly of base load power sources enabling thus to large nuclear or thermal generating plant to operate at peak efficiencies. Energy storage has contributed over the time to meet peak demand and regulate frequency beside peak fossil fuel power plant who usually provided the bulk of the required energy. In the aforementioned context where inherent variability of the power generation asset was mainly a minor issue, energy storage capacity remains nevertheless limited for economic reason storing electricity during low electricity demand…

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Novel Catalysts for Ammonia Cracking and Synthesis

The most effective ammonia cracking catalysts are currently based on rare metals such as ruthenium and cobalt. While iron can efficiently crack ammonia at 600 °C, it is desirable to develop similarly inexpensive catalysts that are effective at lower temperatures between 350 °C and 500 °C. In this presentation, a new family of imide-based catalysts are described that crack ammonia around 400 °C to 550 °C. These materials do not behave as conventional surface-based catalysts and offer an affordable route for on-board cracking of ammonia for hydrogen fuel-cell cars. The operational parameters of a small 50W lab-based demonstrator will be…

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Delivering Clean Hydrogen Fuel from Ammonia Using Metal Membranes

The use of ammonia (NH3) as a hydrogen vector can potentially enable renewable energy export from Australia to markets in Asia and Europe. With a higher hydrogen density than liquid H2, plus existing production and transport infrastructure, and well-developed safety practices and standards, the financial and regulatory barriers to this industry are lower than for liquid H2 transport. The only significant technical barrier which remains, however, is the efficient utilisation of ammonia fuel at or near the point of use, either directly or through the production of H2. For H2 production from NH3, the purity of the product H2 is…

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Research and Development of Ammonia-fueled SOFC Systems

Ammonia is a promising hydrogen carrier because of its high hydrogen density, low production cost, and ease in liquefaction and transport. Ammonia decomposes into nitrogen and hydrogen through a mildly endothermic process. The ammonia decomposition temperature is close to the operating conditions of solid oxide fuel cells (SOFCs). Therefore, the integration of these two devices is beneficial in terms of efficient heat and energy managements and will lead to the development of simplified generation systems. We have investigated three types of ammonia-fueled SOFC systems. In one system, ammonia is directly supplied to the anode chamber. Ammonia decomposes into nitrogen and…

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Cracking ammonia

In this talk, I will discuss our latest research in developing novel ammonia cracking catalysts. While ammonia can be used directly as a fuel in high temperature fuel cells, internal combustion engines and gas turbine, the ability to crack ammonia affordably and effectively increases the range of possibilities for utilising ammonia as an energy vector. For example, the production of an ammonia-free hydrogen/nitrogen gas mixture permits the consideration of ammonia as an on-board hydrogen storage option for transportation. Furthermore, the ability to partly crack ammonia provides an increased flexibility for internal combustion engines. I will outline developments in our search…