INVESTIGATION ON SURFACE METALLIC ACTIVE STRUCTURE OF SUPPORTED RUTHENIUM CATALYST
文献类型：期刊论文
| 作者 | Ding Yunjie; Liang Dongbai; Lin Liwu; Li Can; Xin Qin |
| 刊名 | acta physico-chimica sinica
 |
| 出版日期 | 1993 |
| 卷号 | 9期号:6页码:760-764 |
| 关键词 | Ru catalyst F-T synthesis Active structure |
| 英文摘要 | the metallic surface structure of supported ru catalysts, activated at different pretreatment conditions, was investigated by following the development of ir bands due to adsorbed co, as well as by following the methane formation in temperature-programmed surface reaction (tpsr-ms) of adsorbed co in a h-2 flow. it revealed that there existed three kinds of active sites, designated as s-1, s-2 and s-3 sites,respectively. the s-1 sites, characterized by low frequency (lf) bands of 1980 similar to 2060cm(-1) for linearly adsorbed co, were attributed to metallic ru particles with almost no interaction with the support. the tpsr-ms results showed that, when reaction with h-2, the adsorbed co on these sites changed into ch4 at a lower temperature of ca. 450k, varying with activated conditions. on the other hand, the s-2 sites were visualized to be interfacial ru particles in direct contact with supporting materials, and exhibited stronger interaction with support. as a result of this msi effect, the s-2 sites would result in the formation of electron-deficient ru delta+ sites, and maintain high dispersive states of metal catalysts, and also adsorb co with configuation of ru delta+-co at 2075 +/- 5cm(-1) medium frequency (mf2). upon hydrogenation, the adsorbed co formed methane at a much higher temperature of ca. 650k. obviously, the s-1 and s-2 sites are static sites of the conventional nature. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, physical |
| 研究领域[WOS] | chemistry |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000207577800008 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/142664]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ding Yunjie,Liang Dongbai,Lin Liwu,et al. INVESTIGATION ON SURFACE METALLIC ACTIVE STRUCTURE OF SUPPORTED RUTHENIUM CATALYST[J]. acta physico-chimica sinica,1993,9(6):760-764. |
| APA | Ding Yunjie,Liang Dongbai,Lin Liwu,Li Can,&Xin Qin.(1993).INVESTIGATION ON SURFACE METALLIC ACTIVE STRUCTURE OF SUPPORTED RUTHENIUM CATALYST.acta physico-chimica sinica,9(6),760-764. |
| MLA | Ding Yunjie,et al."INVESTIGATION ON SURFACE METALLIC ACTIVE STRUCTURE OF SUPPORTED RUTHENIUM CATALYST".acta physico-chimica sinica 9.6(1993):760-764. |
入库方式： OAI收割
来源：大连化学物理研究所
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