비정상 조건에서 자동차용 배기 정화 촉매의 열화 특성 연구

For 100 hours down-sized Pd catalytic converters are subject to engine exhaust gas that changes its states according to a transient fast aging cycles. The equivalence ratio and temperature of the feed gas are individually adjusted in order to see their influences on the catalytic conversion efficiency. A Pd-only catalytic converters are fast aged for 100 hours by lean exhaust gas at the temperatures above 1,000℃, and the conversion efficiencies during the process are measured and analyzed.