论文类型：
期刊论文
第一作者：
Jin, Jianhui
通讯作者：
Liang, CH (reprint author), Dalian Univ Technol, Lab Adv Mat & Catalyt Engn, Dalian 116024, Peoples R China.
合写作者：
Li, Chuang,Tsang, Chi-Wing,Xu, Bin,Liang, Changhai
发表时间：
2016-03-02
发表刊物：
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
收录刊物：
SCIE、EI
文献类型：
J
卷号：
55
期号：
8
页面范围：
2293-2301
ISSN号：
0888-5885
摘要：
Nanocrystalline Pt-Ce oxides were prepared by citric acid method and impregnation method, and then mounted on cordierites to investigate the catalytic behavior for methane oxidation under scarce oxygen environment. XRD, H-2-TPR, TEM, and XPS were employed to investigate the relationship between physicochemical characteristics and catalytic performances. Pt-CeO2 showed good activity for oxygen conversion in fuel rich condition, especially during extinction step, with a huge hysteresis loop. By varying the oxygen concentration, Pt-CeO2 catalysts were poisoned by oxygen along ignition, and the competitive adsorption of oxygen and methane inhibits the activation of methane. Owing to the interaction between Pt and CeO2, and a more homogeneous dispersion of Pt in CeO2 compared with that of Pt/CeO2 prepared by impregnation, Pt-CeO2 catalysts maintained high activity during calcination and pretreatments.
是否译文：
否
