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Hyangsoo Jeong

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Articles

Active nitrogen mediated selective ruthenium migration on ceria for high pressure ammonia decomposition

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By Gunjoo Kim, Gahong Kim, Hyunsik Hwang, Eunseong Yoo, Jae-eon Hwang, Jae Lee, Hae Ryeong Lee, Keunsoo Kim, Hyangsoo Jeong, Yongmin Kim, Sungeun Yang, Andreas T. Güntner, Hyunjoo Lee, Keun Hwa Chae, Hyung Chul Ham, Hyuntae Sohn
| Nature Verified
Abstract Precise stabilization of atomic structures under reaction environments remains a central challenge in heterogeneous catalysis. Here, we demonstrate that ammonia (NH3) serves as a chemically active nitrogen source to derive the selective migration of ruthenium (Ru) atoms onto ceria (CeO2) domains, forming a durable atomically dispersed structure.
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Chemical Bonds Containing Hydrogen: Choices for Hydrogen Carriers and Catalysts

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By James Cashel, DAI Yan, Rui Han, Hyangsoo Jeong
| Wiley Online Library Verified
1 Introduction Hydrogen storage is crucial for a hydrogen-based economy, with both physical and chemical methods being explored. Physical methods such as compression and liquefaction are commonly used but have low hydrogen density and significant energy losses.[1] Hydrogen carriers with high hydrogen capacity, such as liquid organic hydrogen carriers (LOHCs) and ammonia, have therefore attracted strong attention.
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Novel Roles of Catalysts in Producing High‐purity High‐pressure Hydrogen from Sodium Borohydride

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By Hyangsoo Jeong, Kimoon Lee, Chan Kim, Yu-Jin Lee
| Wiley Online Library Verified
Hydrogen has received enormous attention as a clean fuel with its high specific energy (142 MJ/kg). To apply hydrogen as a practically available energy vector, the direct production of high-pressure hydrogen with high purity is pivotal, as it allows for circumventing the mechanical compression process.
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