Hydrogen Storage Material Made from Fine Dust Cause Substances

Development of Carbon-Zero Ammonia Synthesis Reaction Technology Using Nitric Oxide
Metal Complex Additives Improve Reaction Rate and Selectivity

[Asia Economy Reporter Junho Hwang] A technology that converts nitrogen monoxide (NO), a cause of fine dust, into 100% pure ammonia (NH3) without carbon emissions has been developed. Ammonia can be used to store hydrogen, making it a technology expected to contribute to advancing the carbon-neutral era.

The research team led by Professors Youngguk Kwon and Hangwon Lim from the Department of Energy Engineering at Ulsan National Institute of Science and Technology, in collaboration with Professor Hyungjun Kim's team from the Korea Advanced Institute of Science and Technology, announced on the 1st that their research results were recently published in the international academic journal ACS Energy Letters.

is a reaction mechanism system in which ammonia is produced on the electrode surface

The research team developed an electrochemical system that converts nitrogen monoxide, a precursor of fine dust, into ammonia at room temperature and atmospheric pressure. This system uses a metal complex compound (FeIIEDTA) to adsorb nitrogen monoxide, improving its solubility by more than 100 times compared to existing methods. No byproducts such as carbon dioxide were generated.

Professor Kwon stated, "Liquid ammonia can store more hydrogen per unit volume than liquefied hydrogen, making it advantageous for hydrogen storage and transportation. We expect this technology development to contribute to accelerating the opening of the full-scale hydrogen era."

Professor Lim, who conducted a preliminary economic feasibility study, explained, "By utilizing surplus renewable electricity, the developed system could achieve long-term economic feasibility comparable to existing ammonia production methods."

Conceptual Diagram of Nitrogen Cycling Model Using Catalytic System

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