Events
Date 13 Jan 2025
Time 4:00 pm - 5:00 pm (HKT)
Venue Lecture Theatre P1, Chong Yuet Ming Chemistry Building
Speaker Prof. Hyun-Seog Roh
Institution Yonsei University
Self Photos / Files - Prof. Hyun-Seog Roh Seminar Poster_page-0001 (2)
 
Title:
Current research trends for target-oriented WGS reactions dealing with diverse types of resources
 
Schedule:
Date: 13th January, 2025 (Monday)
Time: 4 - 5 pm (HKT)
 
Venue: Lecture Theatre P1, Chong Yuet Ming Chemistry Building
 
Speaker:
Prof. Hyun-Seog Roh
Yonsei University
 
Biography:
Professor Hyun-Seog Roh received his Ph.D. in Chemical Engineering from Yonsei University in Seoul, South Korea, in 2001. Currently, he is a director of the BK 21 FOUR project and a full professor of the department of Environmental and Energy Engineering at Yonsei University in Wonju, South Korea. He began his career at Yonsei University in 2008, after a research career at the Korea Research Institute of Chemical Technology, Pacific Northwest National Lab. in Richland, and the Korea Institute of Energy Research.
 
Professor Roh has published 238 papers in scientific literature and 29 patents. For the fourth consecutive year, he has been named in the world’s top-2% scientists by Stanford University. His research activities are primarily focused in environmental catalysis, including catalyst design, manufacture, characterization, and application, as well as reactor design for hydrogen production through reforming and the water-gas shift reaction. Recently, his research has focused on the effect of oxygen storage capacity on the redox properties of catalysts. In addition, his work also focuses on C1 chemistry (catalytic dehydration of methanol to dimethyl ether over solid-acid catalysts, Fischer-Tropsch synthesis), bio-oil upgrade (deoxygenation), desulfurization (decomposition of SOx, sorption), liquid phase oxidation of aromatic compounds, deNOx, microwave catalysis, synthesis of nanoporous materials, inorganic membrane, and VOCs removal.
 
Abstract:
Extensive studies are being carried out for new and renewable energies. Hydrogen is receiving special attention, and research on upcycling energy resources, including natural gas, coal, waste, and biomass, is in the spotlight. Catalytic reactions are often essential for producing high-value chemicals from these resources. The water–gas shift (WGS, CO + H2O → CO2 + H2) reaction is one of the most useful catalytic pathways for upcycling various types of synthesis gas. Currently, the application range of WGS reactions has further expanded to the upcycling of waste, biomass, and coal-derived synthesis gas. However, the reaction conditions and catalysts should be carefully customized for each resource by considering their characteristics. In this study, we have focused on the reaction conditions and catalysts for the WGS reactions that have dealt with various types of feed gases over the last 10 years to understand the development progress. Based on the categorization (by the type of feed gas), we carefully compare the tested catalysts, capacity, temperature, feed gas composition, steam-to-carbon ratio, and catalyst performance. We provide insight into the current research trends and perspectives for target-oriented WGS reactions in each type of feed gas source, which can give clues for customization.
 
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