Simple and Low-Cost Preparation Method for Highly Dispersed PtRu/C Catalysts

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• 作者：Bo Yang ; Qingye Lu ; Yang Wang ; Lin Zhuang ; Juntao Lu ; Peifang Liu ; Jianbo Wang ; and Renhui Wang
• 刊名：Chemistry of Materials
• 出版年：2003
• 出版时间：September 9, 2003
• 年：2003
• 卷：15
• 期：18
• 页码：3552 - 3557
• 全文大小：137K
• 年卷期：v.15,no.18(September 9, 2003)
• ISSN：1520-5002

文摘

A low-cost impregnation method was developed to prepare PtRu catalysts highly dispersedon carbon support. As clearly revealed by the HRTEM image, even with high metal loadings(up to 40 wt % Pt + 20 wt % Ru) the average particle diameter was 1.5 nm with a narrowdistribution (±0.5 nm). Based on EDAX, XRD, XPS, and TGA/DTA analyses, the structureof the PtRu catalyst was deduced to be composed of PtRu alloy and amorphous rutheniumcompounds, predominantly hydrous ruthenium oxide, RuO_xH_y. The PtRu catalyst thus-prepared exhibited excellent performance for methanol oxidation.