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Ru계 촉매의 CO 선택적 산화 반응 및 1 kW급 천연가스 연료처리 시스템의 성능 연구
서유택,서동주,서용석,정진혁,윤왕래,노현석 한국수소및신에너지학회 2006 한국수소 및 신에너지학회논문집 Vol.17 No.3
KIER has been developing a Ru-based preferential oxidation catalysts and a novel fuel processing system to provide hydrogen rich gas to residential PEMFCs system. The catalytic activity of Ru-based catalysts was investigated at different Ru loading amount and different support structure. The obtained result indicated that 2 wt% loaded Ru-based catalyst supported on α-Al2O3 showed high activity in low temperature range and suppressed the methanation reaction. The developed prototype fuel processor showed thermal efficiency of 78% as a HHV basis with methane conversion of 92%. CO concentration below 10 ppm in the produced gas is achieved with separate preferential oxidation unit under the condition of [O2]/[CO]=2.0. The partial load operation have been carried out to test the performance of fuel processor from 40% to 80% load, showing stable methane conversion and CO concentration below 10 ppm. The durability test for the daily start-stop and 8 h operation procedure is under investigation and shows no deterioration of its performance after 50 start-stop cycles. In addition to the system design and development.주요기술용어 : natural gas(천연가스), fuel processing system(연료처리 시스템), steam reforming (수증기 개질), PEMFCs (고분자 연료전지), residential cogeneration system (가정용 열병합 시스템), preferential oxidation catalyst (선택적 산화 촉매)†Corresponding author : wlyoon@kier.re.kr