Tube-wall catalytic membrane reactor for hydrogen production by low-temperature ammonia decomposition
International Journal of Hydrogen Energy(2021)
Abstract
Ammonia has attracted great interest as a chemical hydrogen carrier. However, ammonia decomposition is limited kinetically rather than thermodynamically below 400 °C. We developed a tube-wall catalytic membrane reactor that could decompose ammonia with high conversion even at temperatures below 400 °C. The reactor had excellent heat transfer characteristics, and thus nearly 100% conversion for an NH3 feed of 10 mL/min at 375 °C was achieved with a 2-μm-thick palladium composite membrane, and hydrogen removal from the decomposition side resulted in a large kinetic acceleration.
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Key words
Ammonia,Hydrogen,Palladium,Tube wall reactor,Membrane reactor
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