Search Results - "Kim, Jeongnam"

Effect of mesoporosity against the deactivation of MFI zeolite catalyst during the methanol-to-hydrocarbon conversion process by Kim, Jeongnam, Choi, Minkee, Ryoo, Ryong

“…Catalytic lifetime of MFI zeolites in methanol-to-hydrocarbon conversion is remarkably improved by mesopore generation. This is attributed to a shift of the…”
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General technoeconomic analysis for electrochemical coproduction coupling carbon dioxide reduction with organic oxidation by Na, Jonggeol, Seo, Bora, Kim, Jeongnam, Lee, Chan Woo, Lee, Hyunjoo, Hwang, Yun Jeong, Min, Byoung Koun, Lee, Dong Ki, Oh, Hyung-Suk, Lee, Ung

“…Electrochemical processes coupling carbon dioxide reduction reactions with organic oxidation reactions are promising techniques for producing clean chemicals…”
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A Study on the Development of the Stainless Steel Tube Bundle Structure Detecting System Using Ultrasonic Guided Wave by Kim, Jeongnam, Zhang, Jiannan, Malikov, Azamatjon Kakhramon Ugli, Cho, Younho

“…In this study, an ultrasonic guided wave system that can be used to detect broken tubes in stainless steel tube bundle structures (e.g., heat exchangers) with…”
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Defect Detection and Characterization in Concrete Based on FEM and Ultrasonic Techniques by Kim, Jeongnam, Cho, Younho, Lee, Jungwon, Kim, Young H

“…In order to estimate the crack depth in concrete using time-of-flight, finite element analysis and experiments were performed on non-cracked concrete blocks…”
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An experimental study on second harmonic generation of guided wave in fatigued spring rod by Kim, Jeongnam, Zhu, Bo, Cho, Younho

“…Conventional ultrasonic inspection techniques especially ultrasonic guided wave and wave testing methods show excellent capability for evaluating the material…”
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Nonlinear Ultrasonic Guided Wave Method Using Semi-Analytical Finite Element (SAFE) Technique on a Damaged SWO-V Spring Coil by Kim, Jeongnam, Park, Junpil, Zhu, Bo, Cho, Younho

“…This work presents a non-destructive method for quantitative essessment of fatigue damage of materials with linear elastic properties using nonlinear…”
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A novel ultrasonic inspection method of the heat exchangers based on circumferential waves and deep neural networks by ugli Malikov, Azamatjon Kakhramon, Cho, Younho, Kim, Young H., Kim, Jeongnam, Kim, Hyung-Kyu

“…The heat exchanger (HE) is an important component of almost every energy generation system. Periodic inspection of the HEs is particularly important to keep…”
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Highly Stable Pt/Ordered Graphitic Mesoporous Carbon Electrocatalysts for Oxygen Reduction by Gupta, Gaurav, Slanac, Daniel A, Kumar, Pavan, Wiggins-Camacho, Jaclyn D, Kim, Jeongnam, Ryoo, Ryong, Stevenson, Keith J, Johnston, Keith P

“…In this manuscript, we have synthesized a stable fuel cell catalyst composed of presynthesized Pt nanocrystals (<4 nm) on graphitic mesoporous carbon. The…”
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Stable single-unit-cell nanosheets of zeolite MFI as active and long-lived catalysts by Choi, Minkee, Na, Kyungsu, Kim, Jeongnam, Sakamoto, Yasuhiro, Terasaki, Osamu, Ryoo, Ryong

“…Zeolite catalysis: the thin of it Zeolites — microporous crystalline aluminosilicates — are widely used in industry as size- and shape-selective catalysts. But…”
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Amorphous Pd-assisted H2 detection of ZnO nanorod gas sensor with enhanced sensitivity and stability by Kim, Hyeonghun, Pak, Yusin, Jeong, Yeonggyo, Kim, Woochul, Kim, Jeongnam, Jung, Gun Young

“…•Facile synthesis of ultrathin amorphous Pd layer (2–5 nm) on ZnO nanorods.•Comparison of sensing behavior between amorphous and crystalline Pd-coated ZnO…”
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Surfactant-Directed Zeolite Nanosheets: A High-Performance Catalyst for Gas-Phase Beckmann Rearrangement by Kim, Jeongnam, Park, Woojin, Ryoo, Ryong

“…Silica nanosheets with an MFI zeolite topology having a thickness of 2 nm were synthesized following a synthetic route using…”
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Effects of the Support on the Performance and Promotion of (Ni)MoS 2 Catalysts for Simultaneous Hydrodenitrogenation and Hydrodesulfurization by Gutiérrez, Oliver Y., Singh, Srujan, Schachtl, Eva, Kim, Jeongnam, Kondratieva, Elena, Hein, Jennifer, Lercher, Johannes A.

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n-Heptane hydroisomerization over Pt/MFI zeolite nanosheets: Effects of zeolite crystal thickness and platinum location by Kim, Jeongnam, Kim, Wookdong, Seo, Yongbeom, Kim, Jeong-Chul, Ryoo, Ryong

“…Pt-loaded MFI zeolites with various crystal thicknesses ranging from 300 to 2nm were investigated for n-heptane hydroisomerization. Branched isomer selectivity…”
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Directing Zeolite Structures into Hierarchically Nanoporous Architectures by Na, Kyungsu, Jo, Changbum, Kim, Jeongnam, Cho, Kanghee, Jung, Jinhwan, Seo, Yongbeom, Messinger, Robert J., Chmelka, Bradley F., Ryoo, Ryong

“…Crystalline mesoporous molecular sieves have long been sought as solid acid catalysts for organic reactions involving large molecules. We synthesized a series…”
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Learning the properties of a water-lean amine solvent from carbon capture pilot experiments by Kim, Jeongnam, Na, Jonggeol, Kim, Kyeongsu, Bak, Ji Hyun, Lee, Hyunjoo, Lee, Ung

“…Process design and optimization are challenging task not only because of the model formulation and expensive computation but also numbers of physicochemical…”
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Effects of the Support on the Performance and Promotion of (Ni)MoS2 Catalysts for Simultaneous Hydrodenitrogenation and Hydrodesulfurization by Gutiérrez, Oliver Y, Singh, Srujan, Schachtl, Eva, Kim, Jeongnam, Kondratieva, Elena, Hein, Jennifer, Lercher, Johannes A

“…MoS2 and Ni-promoted MoS2 catalysts supported on γ-Al2O3, siliceous SBA-15, and Zr- and Ti-modified SBA-15 were explored for the simultaneous…”
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External Surface Catalytic Sites of Surfactant-Tailored Nanomorphic Zeolites for Benzene Isopropylation to Cumene by Kim, Wookdong, Kim, Jeong-Chul, Kim, Jeongnam, Seo, Yongbeom, Ryoo, Ryong

“…Nanomorphic *BEA, MTW, and *MRE zeolites were investigated as catalysts for isopropylation of benzene. From the deactivation pattern of the zeolites, we…”
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Practical deployment of pipelines for the CCS network in critical conditions using MINLP modelling and optimization: A case study of South Korea by Kim, Changsoo, Kim, Kyeongsu, Kim, Jeongnam, Ahmed, Usama, Han, Chonghun

“…•Framework for CCS network design in critical conditions is proposed.•Effect of reservoir uncertainty and CCS policy options is analyzed.•Policy options affect…”
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An experimental based optimization of a novel water lean amine solvent for post combustion CO2 capture process by Hwang, Junhyeok, Kim, Jeongnam, Lee, Hee Won, Na, Jonggeol, Ahn, Byoung Sung, Lee, Sang Deuk, Kim, Hoon Sik, Lee, Hyunjoo, Lee, Ung

“…[Display omitted] •Propose a new water lean amine solvent for CO2 capture.•The low regeneration energy of K2Sol is demonstrated through pilot plant…”
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Multi-objective optimization of Organic Rankine Cycle (ORC) design considering exergy efficiency and inherent safety for LNG cold energy utilization by Lee, Younggeun, Kim, Jeongnam, Ahmed, Usama, Kim, Changsoo, Lee, Youn-Woo

“…Natural gas (NG) is an environment-friendly energy source with low CO2 and SOx emission. NG is usually liquefied during processing for transportation and…”
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