A5024380911- Methane Hydrates and Related Phenomena
- CO2 Sequestration and Geologic Interactions
- Hydrocarbon exploration and reservoir analysis
- Spacecraft and Cryogenic Technologies
- Carbon Dioxide Capture Technologies
- Atmospheric and Environmental Gas Dynamics
- Freezing and Crystallization Processes
- Zeolite Catalysis and Synthesis
- Catalysts for Methane Reforming
- Inorganic Fluorides and Related Compounds
- Phase Equilibria and Thermodynamics
- Chemical Looping and Thermochemical Processes
- Hybrid Renewable Energy Systems
Kyonggi University
2025
Ulsan National Institute of Science and Technology
2018-2024
Colorado School of Mines
2023-2024
Government of the Republic of Korea
2021
In this study, 13 machine learning (ML) models were employed to predict the phase equilibrium temperatures of CO2 hydrate in systems with salts and organic inhibitors: Multiple Linear Regression (MLR), Support Vector (SVR), k-Nearest Neighbors (KNN), Multi-Layer Perceptron (MLP), Decision Tree (DT), Random Forest (RF), Extra Trees (ET), Adaptive Boosting (AdaBoost), Categorical (CatBoost), Gradient Machine (GBM), Light (LGBM), Histogram-Based (HistGB), eXtreme (XGBoost). A dataset consisting...
In this study, clathrate-based CO2 capture was investigated in the presence of thermodynamic promoters such as tetrahydrofuran (THF) and tetra-n-butyl ammonium chloride (TBAC) for upgrading CO2-rich natural gas biogas. The phase equilibria, uptakes, composition measurements, spectroscopic analyses CH4 (50%), promoter clathrates were examined with a primary focus on effects clathrate stability cage filling behavior. addition THF TBAC significantly enhanced (50%) clathrates. 13C NMR Raman...
This study investigated the structural transformation, guest distributions, and extent of replacement in CH4 + C3H8–flue gas occurring sII hydrates via chromatography, NMR spectroscopy, powder X-ray diffraction (PXRD). Simulated flue (CO2 (20%) N2 (80%)) was injected into an (90%) C3H8 (10%) hydrate for exchange. The much lower than that C3H8–CO2 replacement. Furthermore, 13C spectra PXRD patterns revealed unlike replacement, did not undergo any transformation during (i.e., iso-structural...
A new sI–sII dual hydrate former [chlorodifluoromethane (CHClF<sub>2</sub>); an important greenhouse gas with a global warming potential of 1810] was introduced and closely investigated for its significance in hydrate-based separation.
The complex phase behaviors and structural coexistence of natural gas hydrates (NGHs) that contain large-molecule guest substances (LMGSs) were examined for their significance in the exploration exploitation NGHs as well storage transportation. Methylcyclopentane (MCP) 2,2-dimethylbutane [neohexane (NH)] chosen LMGSs, simplest composition was simulated by a mixture CH4 (90%) + C2H6 (10%). structure II (sII) H (sH) LMGS water mixtures revealed 13C nuclear magnetic resonance (NMR) powder X-ray...