실리카, 알루미늄 실리케이트, 감마 알루미나 담체에 Ni(NO3)2·6H2O와 Ni(CH3COO)2·4H2O를 원료로 침전제인 요소와 시트르산을 사용하여 90 oC에서 공침법을 사용하여 흡착제를 제조하였으며 이를 환원시켜 일산화탄소 제거 실험을 수행하였다. 흡착제는 EDS, TPR, XRD 분석을 실시하여 이를 근거로 흡착제의 성능을 해석하였다. 침전제의 종류, 니켈 금속의 담지량, 담체, 니켈 금속의 염, 수소 환원 조건을 변화시켜 최적의 흡착 성능을 보이는 흡착제를 사용하여 실험을 수행하였다. 침전제인 요소에 Ni(NO3)2·6H2O를 사용하여 실리카 담체에 니켈 54.8 wt%를 담지하여 제조한 흡착제를 500 oC에서 3시간 수소 환원 전처리 후 흡착 실험을 하였을 때 가장 효과적으로 일산화탄소를 제거함을 확인하였다.

The Ni based adsorbent was prepared by co-precipitation method and its performance for removing carbon monoxide was investigated. Here, silica, aluminium silicate and γ-alumina were used for carriers of catalyst. Ni(NO3)2·6H2O and Ni(CH3COO)2·4H2O were utilized for Ni precursors. Precipitants were urea and citric acid. After precipitation of Ni salt on the carrier and following reduction using H2 gas, adsorbent was prepared and its performance was analyzed based on EDS, TPR and XRD experiments. In accordance with change of precipitation agents, Ni salts on carrier, carriers and reduction condition. Adsorbent performance for removing carbon monoxide was investigated. The adsorbent with 54.8 wt% Ni prepared using urea precipitant under reduction condition at 500 oC for 3 h exhibited the best CO removal performance.

α,β-Nickel Oxide Adsorbent TPR XRD Breakthrough Curve

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