• 1974 : Univ. of Western Ontario (Ph.D. in Chem. Eng.)
• 1970 : Univ. of Western Ontario (M.E.Sc. in Chem. Eng.)
• 1967 : Korea Univ. (B.S. in Chem. Eng.)

• 2010 ~ Present : Professor Emeritus, KAIST
• 1978 ~ 2010 : Professor, KAIST
• 1991 ~ 2010 : Director, Energy and Environment Research Center, KAIST
• 2001 ~ 2001 : Invited Professor, Ecole Polytechnique de Montreal, Canada
• 1987 ~ 1988 : Visiting Professor, LSGC-CNRS-ENSIC, Nancy, France
• 1976 ~ 1977 : Senior Research Fellow, Energy Resources Center, Univ. of Illinois, Chicago, USA

• Korea Engineering Prize, Korea Government (2003)
• Grand Academic Prize Award, KAIST (2000)
• National Merit - Seokryu-jang (1996)
• NSERC Fellowship, Canada (1982)
• Academic Achievement Award - Korean Institute of Chemical Engineers (1982)

• Fluidized Bed Reactor Design: Internally circulating fluidized bed, circulating fluidized bed, and bubbling fluidized bed reactors for energy conversion (combustion/incineration; pyrolysis/gasification), petrochemical and iron reduction.
• Air Pollution Control: SOx/NOx removal and CO₂ capturing processes
• Plasma Reactor: Surface modification of fine particles and synthesis of polymers by plasma enhanced reaction
• Photocatalytic Reactor: TCE and NOx removal by photocatalytic reaction
• Naphtha Catalytic Cracking Fluidized Bed Reactor: Hydrodynamic characteristics of a circulating fluidized bed reactor for development of a heavy naphtha catalytic cracking fluidized bed process

Fluidization Engineering, Air Pollution Control, Energy Conversion Process

To develop fluidized bed combustor/incinerator and pyrolysis/gasification reactors, various models and correlations are being developed from the studies of hydrodynamic properties and combustion/incineration and pyrolysis/gasification characteristics of coal, biomass, industrial wastes (spent catalysts, waste water sludge) in the circulating fluidized bed, internally circulating fluidized, bed, and downer reactors. Also, to develop a chemical looping combustor with CO₂ separation, the reaction characteristics of oxidation/reduction of metal oxides catalysis (NiO, Fe2O3/Al2O3, TiO2, bentonite) in a thermo-balance reactor and a circulating fluidized bed are under investigation.

To modify the particle surface by plasma without variation of its bulk property, a circulating fluidized bed reactor is developing using reactant gases (O2, CF4, etc.), PS-PEG plasma graft polymerization, and plasma enhanced chemical vapor deposition (PECVD) are under investigation under low and atmospheric pressure.

Our group is developing air pollution control technologies such as photocatalysts, photocatalytic reactor for NOx and VOCs (TCE, toluene and acetone) removals in the annular/circulating fluidized bed reactor and the internally circulating slurry bubble column by the sol-gel methods, Also, to find new additives and the reaction mechanism in the selective noncatalytic reduction (SNCR) process for NOx removal for widening temperature windows and lowering reaction temperature with high removal efficiency, the reaction mechanism is developing with various chemical additives through experimental and numerical methods. Also, the low-temperature and high-activity fast selective catalytic reduction (SCR) over honeycomb type of De-NOx catalyst systems are under investigation in the two reactors for oxidation and reduction reactions with the SCR catalyst and ammonia for higher efficiency and performance of the SCR system.