A5029158136- Zeolite Catalysis and Synthesis
- Mesoporous Materials and Catalysis
- Catalytic Processes in Materials Science
- Metal-Organic Frameworks: Synthesis and Applications
- Catalysis and Oxidation Reactions
- Catalysis for Biomass Conversion
- Catalysts for Methane Reforming
- Chemical Synthesis and Characterization
- Catalysis and Hydrodesulfurization Studies
- Supercapacitor Materials and Fabrication
- X-ray Diffraction in Crystallography
- Radioactive element chemistry and processing
- Crystallization and Solubility Studies
- Analytical Chemistry and Sensors
- Gas Sensing Nanomaterials and Sensors
- Conducting polymers and applications
- Chemical Synthesis and Reactions
- Ammonia Synthesis and Nitrogen Reduction
- Nuclear Materials and Properties
- Multicomponent Synthesis of Heterocycles
- Crystallography and molecular interactions
- Nanomaterials for catalytic reactions
- Covalent Organic Framework Applications
- Combustion and Detonation Processes
- Polyoxometalates: Synthesis and Applications
Incheon National University
2017-2025
SUNY College of Environmental Science and Forestry
2024
State University of New York
2024
York University
2024
Incheon Medical Center
2020
Pohang University of Science and Technology
2009-2019
Paul Scherrer Institute
2016-2017
Bioengineering (Switzerland)
2016
Korea Post
2015
Sogang University
2010
Abstract Direct partial oxidation of methane into methanol is a cornerstone catalysis. The stepped conversion currently involves activation at high temperature and reaction with decreased temperature, which limits applicability the technique. first implementation copper‐containing zeolites in production directly from reported, using molecular oxygen under isothermal conditions 200 °C. Copper‐exchanged zeolite activated oxygen, reacts methane, subsequently extracted steam repeated cyclic...
Abstract The characterization and reactive properties of copper zeolites with twelve framework topologies (MOR, EON, MAZ, MEI, BPH, FAU, LTL, MFI, HEU, FER, SZR, CHA) are compared in the stepwise partial oxidation methane into methanol. Cu 2+ ion‐exchanged zeolite omega, a MAZ‐type material, reveals highest yield (86 μmol g(cat.) −1 ) among these materials after high‐temperature activation liquid methanol extraction. high is ascribed to relatively density copper–oxo active species, which...
A solid understanding of the molecular-level mechanisms responsible for zeolite crystallization remains one most challenging issues in modern science. Here we investigated formation pathway high-silica LTA crystals simultaneous presence tetraethylammonium (TEA(+)), tetramethylammonium (TMA(+)), and Na(+) ions as structure-directing agents (SDAs) with goal better charge density mismatch synthesis approach, which was designed to foster cooperation between two or more different SDAs. Nucleation...
A wide variety of different linear, diquaternary alkylammonium ions have been used as supplementary crystallization structure-directing agents (SDAs) in the synthesis UZM-12, a high-silica version zeolite erionite, via charge density mismatch (CDM) approach. When tetraethylammonium is CDM SDA, UZM-12 was found to be critically dependent not only on type alkali metal cations added another SDA mixture, but also size groups ammonium ion employed and length its central polymethylene chain that...
Abstract Direct partial oxidation of methane into methanol is a cornerstone catalysis. The stepped conversion currently involves activation at high temperature and reaction with decreased temperature, which limits applicability the technique. first implementation copper‐containing zeolites in production directly from reported, using molecular oxygen under isothermal conditions 200 °C. Copper‐exchanged zeolite activated oxygen, reacts methane, subsequently extracted steam repeated cyclic...
The proton form of nanosized, needlelike ferrierite zeolite, which was synthesized using choline and Na+ cations as structure-directing agents, found to be much more efficient for the skeletal isomerization 1-butene isobutene than corresponding cation conventional, submicrometric with a platelike shape, mainly because considerably lower density strong acid sites, but well result higher 10-ring pore mouths.
The effects of hydrocarbons (HCs) on a combined selective catalytic reduction (SCR) system by NH3 and mixed HCs for simulated exhaust over five different types Cu2+-exchanged zeolite catalysts have been systematically examined according to the reaction temperature. CuSSZ-13 with three-dimensional (3D) small pores CuFER 2D medium- small-pore channels showed good resistance poisoning heavy such as dodecane (C12H26) m-xylene (C8H10), while they were not tolerant short-chain propylene (C3H6)....
For next-generation gas sensors, conductive polymers have strong potential for overcoming the existing deficiencies of conventional inorganic sensors based on metallic oxides. However, signal organic is inferior to that metal oxide because sensors' poor charge carrier transport. Herein, combination an transistor-type sensor and a zeolite with gas-adsorbing properties proposed experimentally demonstrated. Among various investigated zeolites, ZSM-5 ∼5.5 Å pore openings enhanced adsorption...
To effectively remove the harmful methyl chloride (CH3Cl) via an adsorption technique, it is crucial to enhance surface characteristic of adsorbent. In this study, we prepared various heteroatom-substituted MWW-type zeolitic adsorbents through a simple hydrothermal treatment and investigated effect CH3Cl according substituted hetero elements. We systematically structural properties, chemical state framework atoms, concentrations hydroxyl groups, amounts strength Lewis acid sites adsorbents....