A5028501194- Advanced Condensed Matter Physics
- Hydrogen Storage and Materials
- Magnetic and transport properties of perovskites and related materials
- Multiferroics and related materials
- Catalysis for Biomass Conversion
- Hybrid Renewable Energy Systems
- Electrocatalysts for Energy Conversion
- Advanced Battery Materials and Technologies
- Ammonia Synthesis and Nitrogen Reduction
- Catalysis and Hydrodesulfurization Studies
- Advanced battery technologies research
- Crystal Structures and Properties
- Catalysts for Methane Reforming
- Supercapacitor Materials and Fabrication
- Solid-state spectroscopy and crystallography
- Carbon dioxide utilization in catalysis
Ulsan National Institute of Science and Technology
2016-2025
Reversible hydrogenation and dehydrogenation processes were investigated in a liquid organic hydrogen carrier (LOHC) system by employing single-catalyst approach. Key hydrogen-involved catalytic behaviors, including adsorption migration, play crucial roles reactivity. To facilitate these behaviors at the active sites on catalyst surface during LOHC process, defective metal oxide support was utilized. Herein, Pd prepared using hierarchical titanate nanosheets (HTN) synthesized via...
Incorporating metal oxides is a sensible strategy for enhancing the efficiency of precious metals. Upon introduction molybdenum oxide, diverse coordination structures were formed on support surface depending concentration used. This modified architecture orchestrates consequential alterations in electronic and geometric configurations active metal, concurrently influencing catalytic performance. In this study, MoOx species introduced into Pd controlled manner to substantially enhance...
Crystal of ${\mathrm{GaV}}_{4}{\mathrm{S}}_{8}$, a multiferroic system hosting N\'eel-type skyrmion lattice phase, has been investigated by polarized Raman and IR spectroscopy above below the ferroelectric phase transition. Counts observed Raman-active modes belonging to distinct irreducible representations agree quite well with group-theory predictions. Phonon spectra are assigned interpreted aid ab initio calculations phonon in phase. Results allow appreciation frequencies involved...
Abstract Localized spins and itinerant electrons rarely coexist in geometrically-frustrated spinel lattices. They exhibit a complex interplay between localized electrons. In this paper, we study the origin of unusual spin structure CoV 2 O 4 , which stands at crossover from insulating to behavior using first principle calculation neutron diffraction measurement. contrast expected paramagnetism, supported by enhanced exchange couplings are frustrated effects delocalized This frustration...
Abstract The topotactic phase transition in SrCoO x ( = 2.5–3.0) makes it possible to reversibly transit between the two distinct phases, i.e. brownmillerite 2.5 that is a room-temperature antiferromagnetic insulator (AFM-I) and perovskite 3 ferromagnetic metal (FM-M), owing their multiple valence states. For intermediate values, phases are expected strongly compete with each other. With oxidation of , however, has been conjectured magnetic decoupled electronic transition, i.e., AFM-to-FM...
Catalytic CO2 hydrogenation facilitated by Fe3O4 produces long-chain hydrocarbons and light olefins through the combination of reverse water–gas shift reaction Fischer–Tropsch synthesis in a single reactor. Complementing Fe3O4-based catalysts, zeolites can be incorporated to modulate product distribution dual-bed configuration. However, with strong acid sites induce cracking extended hydrocarbon chains, thereby impeding production exceeding 12 carbon atoms. This paper introduces novel...