| Theoretical Study for Hydrogen Production from an
Integrated Gasification Combined Cycle System |
| Sang-Sup Lee† |
| Department of Environmental Engineering, Chungbuk National University, Cheongju 361-763, Korea |
Corresponding Author:
Sang-Sup Lee ,Tel: +82-43-261-2468, Fax: +82-43-261-2465, Email: slee@cbnu.ac.kr
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Received: May 1, 2010; Accepted: March 3, 2011. |
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| ABSTRACT |
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An integrated gasification combined cycle (IGCC) system has been attracting attention due to its increased energy conversion efficiency
and ability to treat various carbonaceous materials. IGCC is also expected to play an important role in the future supply of
hydrogen energy. The use of a palladium-based membrane to separate the hydrogen from the synthesis gas stream has been intensively
studied due to its exceptional hydrogen-separating capability. However, theoretical research on hydrogen separation is still an
unfamiliar area in Korea. First-principle density functional theory was applied in this study to investigate the dissociative adsorption
of hydrogen onto a palladium surface. The stability of hydrogen on the surface was theoretically evaluated with various adsorption
configurations, partial pressures and temperatures. Further theoretical and experimental studies were also suggested to find a more
hydrogen-selective material. |
| Keywords:
Density functional theory | Hydrogen separation | IGCC | Palladium membrane | Renewable energy |
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