TY - JOUR
T1 - CO removal from reformed fuel over Cu/ZnO/Al2O3 catalysts prepared by impregnation and coprecipitation methods
AU - Tanaka, Yohei
AU - Utaka, Toshimasa
AU - Kikuchi, Ryuji
AU - Sasaki, Kazunari
AU - Eguchi, Koichi
N1 - Funding Information:
This work was partially supported by Grants-in-Aid for Scientific Research from the Ministry of Education, Science, and Sports, and New Energy and Industrial Technology Development Organization (NEDO), Japan.
PY - 2003/1/8
Y1 - 2003/1/8
N2 - A composition of Cu/ZnO/Al2O3 catalysts prepared by the impregnation method was optimized for water gas shift reaction (WGSR) coupled with CO oxidation in the reformed gas. The optimum composition of the impregnated catalyst for high WGSR activity was 5wt.% Cu/5wt.% ZnO/Al 2O3. The optimum loading amounts of Cu and ZnO in the impregnated catalyst were smaller than those in the coprecipitated catalyst. Its catalytic activity above 200°C was comparable to that of the conventional coprecipitated Cu/ZnO/Al2O3 catalyst. However, the activity of the impregnated Cu/ZnO/Al2O3 catalysts was significantly lowered at 150°C, whereas no deactivation was observed for the coprecipitated catalyst at the same temperature. It was found that deactivation occurred over impregnated catalysts with H2O and/ or O2 in the reaction gas; it prevented CO adsorption on the surface.
AB - A composition of Cu/ZnO/Al2O3 catalysts prepared by the impregnation method was optimized for water gas shift reaction (WGSR) coupled with CO oxidation in the reformed gas. The optimum composition of the impregnated catalyst for high WGSR activity was 5wt.% Cu/5wt.% ZnO/Al 2O3. The optimum loading amounts of Cu and ZnO in the impregnated catalyst were smaller than those in the coprecipitated catalyst. Its catalytic activity above 200°C was comparable to that of the conventional coprecipitated Cu/ZnO/Al2O3 catalyst. However, the activity of the impregnated Cu/ZnO/Al2O3 catalysts was significantly lowered at 150°C, whereas no deactivation was observed for the coprecipitated catalyst at the same temperature. It was found that deactivation occurred over impregnated catalysts with H2O and/ or O2 in the reaction gas; it prevented CO adsorption on the surface.
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U2 - 10.1016/S0926-860X(02)00095-9
DO - 10.1016/S0926-860X(02)00095-9
M3 - Article
AN - SCOPUS:0038230991
SN - 0926-860X
VL - 238
SP - 11
EP - 18
JO - Applied Catalysis A: General
JF - Applied Catalysis A: General
IS - 1
ER -