TY - JOUR
T1 - Additive effect of alkali metal ions on preferential CO oxidation over Pt/Al2O3
AU - Minemura, Yuji
AU - Kuriyama, Masatoshi
AU - Ito, Shin ichi
AU - Tomishige, Keiichi
AU - Kunimori, Kimio
PY - 2006/9
Y1 - 2006/9
N2 - In the preferential CO oxidation under H2-rich gas, CO conversion and selectivity of CO oxidation were enhanced by the addition of alkali metal ions (M = Li, Na, K, Rb, Cs) to Pt/Al2O3 in the range of the molar ratio (M/Pt) lower than 3, and TOFs monotonously increased along with the basicity strength of added alkali metal ions. In contrast, in the range of M/Pt ≥ 5, the order of additive effect was K > Na > Rb > Cs. This can be related to a moderate strength of basicity of potassium. In addition, the promoting effect of the presence of H2 on CO oxidation was also clearly observed on K-Pt/Al2O3.
AB - In the preferential CO oxidation under H2-rich gas, CO conversion and selectivity of CO oxidation were enhanced by the addition of alkali metal ions (M = Li, Na, K, Rb, Cs) to Pt/Al2O3 in the range of the molar ratio (M/Pt) lower than 3, and TOFs monotonously increased along with the basicity strength of added alkali metal ions. In contrast, in the range of M/Pt ≥ 5, the order of additive effect was K > Na > Rb > Cs. This can be related to a moderate strength of basicity of potassium. In addition, the promoting effect of the presence of H2 on CO oxidation was also clearly observed on K-Pt/Al2O3.
KW - Alkali metal ions
KW - Basicity
KW - Platinum
KW - Potassium
KW - Preferential CO oxidation
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U2 - 10.1016/j.catcom.2006.01.028
DO - 10.1016/j.catcom.2006.01.028
M3 - Article
AN - SCOPUS:33745002698
SN - 1566-7367
VL - 7
SP - 623
EP - 626
JO - Catalysis Communications
JF - Catalysis Communications
IS - 9
ER -