Subject Area物理化学
Ir, Pt, and Aumodified CeO2 catalysts for CO oxidation: The role of oxygen vacancy and carbonates
林坚、黄延强; Wang XD(王晓东); Li L(李林); Wang AQ(王爱琴); Zhang T(张涛)
Conference NameSixth Tokyo conference on advanced catalytic science and technology and fifth Asia pacific congress on catalysis
Conference Date2010-7-18
Conference Place日本
Alternative TitleIr,Pt,Au修饰的氧化铈催化剂用于CO氧化反应
Funding Organization日本催化协会
AbstractProperties of oxygen vacancy and carbonates were comparatively studied over noble metals ( Ir, Pt, Au) modified CeO2 catalysts and correlated with the performances of CO oxidation. The formation of oxygen vacancy was affected by the metals’ work function, and the adsorption strengths of carbonates were as follows: Ir-CeO2 (144 kJ/mol)>Pt-CeO2 (121 kJ/mol)>Au-CeO2 (93 kJ/mol). By analyzing the transient processes and the heat evolved with CO+O2 pulses, the evolution of CO oxidation was found intimately related with the amount of oxygen vacancy and further with the different adsorption strength of carbonates.
Document Type会议论文
Corresponding AuthorZhang T(张涛)
Recommended Citation
GB/T 7714
林坚、黄延强,Wang XD,Li L,et al. Ir, Pt, and Aumodified CeO2 catalysts for CO oxidation: The role of oxygen vacancy and carbonates[C],2010:117/2.
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