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KIST team develop high-efficiency and stable catalyst for extraction of hydrogen from ammonia

KIST team develop high-efficiency and stable catalyst for extraction of hydrogen from ammonia 2/m 3, liquefied ammonia (NH 3) can store 50% more hydrogen than liquid hydrogen. When ammonia is decomposed at high temperatures, only hydrogen and nitrogen gases are produced, with minimal carbon dioxide emissions. Because more than 200 million tons of ammonia are currently produced annually for industrial use around the globe, the infrastructure for its mass storage and long-distance transport already exists and could simply be re-purposed for hydrogen transport. However, the need for large amounts of heat has thwarted the widespread adoption of ammonia for use in hydrogen transport and storage.

Ammonia decomposition for hydrogen economy, improvement in hydrogen extraction efficiency

 E-Mail IMAGE: A schematic diagram of the catalytic structure for ammonia decomposition developed by KIST researchers view more  Credit: Korea Institute of Science and Technology(KIST) For the implementation of the effective hydrogen economy in the forthcoming years, hydrogen produced from sources like coal and petroleum must be transported from its production sites to the end user often over long distances and to achieve successful hydrogen trade between countries. Drs. Hyuntae Sohn and Changwon Yoon and their team at the Center for Hydrogen-fuel Cell Research of the Korea Institute of Science and Technology (KIST) have announced a novel nanometal catalyst, constituting 60% less ruthenium (Ru), an expensive precious metal used to extract hydrogen via ammonia decomposition.

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