Jong Uk Bae

Abstract The recent dramatic increase in research on isolated metal atoms has received extensive scientific interest in the new frontier of single‐atom catalysis. As newly advanced materials in catalysis, single‐atom catalysts (SACs) have received enormous interest from the perspectives of both scientific research and industrial applications due to their remarkable activity. In addition, other catalytic properties of single metal atoms, including stability and selectivity, can be further improve

Abstract Value‐added aromatic monomers such as benzene, toluene, and xylenes (BTX) are very important building‐block chemicals for the production of plastics, polymers, solvents, pesticides, dyes, and adhesives. Syngas‐to‐aromatics (STA) is a very promising approach for the synthesis of aromatic monomers, and is catalyzed via bifunctional catalysts in a single reactor, wherein methanol/dimethyl ether and/or olefins intermediates formed from syngas on metal components are converted into aromatic

A spatial confinement effect of copper nanoparticles in an ordered mesoporous γ-Al 2 O 3, which is synthesized by an evaporation induced self-assembly (EISA) method, was investigated to verify the enhanced catalytic activity and stability with less aggregation of copper crystallites during direct synthesis of dimethyl ether (DME) from syngas. The surface acidity of the mesoporous Al 2 O 3 and the metallic copper surface area significantly altered catalytic activity and stability. The ordered mes

High Resolution Image Download MS PowerPoint Slide For a solid acid-catalyzed dehydration of biomass-derived carbohydrates into useful furan derivatives, a suitable porous solid acid catalyst having an optimum acidic density and its strength is required to avoid cascade reactions in biomass conversion processes. A large-pore mesoporous zirconium phosphate ( m -ZrP) was prepared hydrothermally using P123 as a template in water solvent, which resulted in a higher pore diameter (>9 nm) having wormh

The different behaviors of structural promoters such as gallium or zinc oxides on the acidic γ-Al2O3 surfaces were investigated for a direct CO2 hydrogenation to DME by using highly ordered mesoporous bifunctional Cu/Al2O3 (Cu/m-MAl, M = Ga or Zn) to verify their gradual changes of product distribution as well as catalytic stability with time on stream. The oxidation states of Cu nanoparticles with their extent of aggregations and amounts of acidic sites on the mesoporous γ-Al2O3 were significan

Volatile organic compounds (VOCs) are toxic and are considered the most important sources for the formation of photochemical smog, secondary organic aerosols (SOAs), and ozone. These can also greatly affect the environment and human health. For this reason, VOCs are removed by applying various technologies or reused after recovery. Catalytic oxidation for VOCs removal is widely applied in the industry and is regarded as an efficient and economical method compared to other VOCs removal technologi

The coproduction of methanol (MeOH) and dimethyl ether (DME) from biomass-derived synthesis gas on the coprecipitated Cu−ZnO−Al 2 O 3 /γ-Al 2 O 3 hybrid catalysts has been investigated to overcome the equilibrium conversion of CO on the MeOH only synthetic reaction at the H 2 -decificient condition. Two different types of γ-Al 2 O 3 were employed as the solid-acid component of hybrid catalyst: one prepared by a precipitation method and the other prepared by a sol–gel method. Several hybrid catal

Recently, air pollution has worsened throughout the world, and as regulations on nitrogen oxides (NOx) are gradually tightened many researchers and industrialists are seeking technologies to cope with them. In order to meet the stringent regulations, research is being actively conducted worldwide to reduce NOx-causing pollution. However, different countries tend to have different research trends because of their regional and industrial environments. In this paper, the results of recent catalyst

Highly ordered mesoporous Fe 2 O 3 –ZrO 2 mixed bimetal oxides (FeZr) without any additional chemical promoters were first applied to produce the value-added hydrocarbons by CO hydrogenation through Fischer–Tropsch synthesis (FTS) reaction of syngas. To enhance a catalytic activity and structural stability, an irreducible ZrO 2 as a structural promoter was incorporated in the ordered mesoporous Fe 2 O 3 structures with a different Zr/Fe molar ratio from 0 to 1 prepared by using a hard template o