Abstract
수소와 CNG를 혼합한 HCNG는 CNG에 비해 연소효율이 높고 보다 친환경적인 연료로 CNG 엔진의 다음 단계의 엔진으로 각광받고 있으며, 수소시대로의 가교역할을 할 것이라 전망된다. 2014년 EURO-6의 도입으로 CNG 및 HCNG 차량에서 발생되는 메탄가스에 대해서도 규제가 이루어질 전망이다. 본 연구에서는 HCNG 엔진의 배기가스 중 메탄가스를 저감하기 위한 메탄산화촉매를 다루었다. 메탄산화촉매의 장시간 운전에 따른 내구성 및 메탄산화 양상 등에 대해 연구했으며, 이 때 촉매의 화학적인 현상을 분석하기 위해 촉매의 중요한 인자인 귀금속 분산도, 비표면적 변화 등을 촉매 활성과 연계하여 연구하였다. HCNG engine is performed as a future engine because of high combustion efficiency and eco-friendly property, and is predicted to a brdge of hydrogen vehicles. As EURO-6 regulagion is due to be applied in 2014, consolidated regulations of methane gas that is exhausted from CNG and HCNG vehicles will come into effect. In this studies, methane oxidation catalyst is introduced to remove methane gas from HCNG emissions. Methane oxidation efficiency on catalyst was studied when it is driven long time. And characterization like metal dispersion, surface area was performed to investigate the correlation of catalyst efficiency and characteristics.
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