HREELS studies of ethanol adsorption and decomposition on Rh(100) surface
文献类型：期刊论文
| 作者 | Tian, ZJ; Wei, XM; Zhai, RS; Ren, SZ; Liang, DB; Lin, LW |
| 刊名 | CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
 |
| 出版日期 | 1997-07-01 |
| 卷号 | 18期号:7页码:1153-1158 |
| 关键词 | Adsorption And Decomposition Of Ethanol Rh(100) High Resolution Electron Energy Loss Spectroscopy Thermal Desorption Spectroscopy Oxametallocyclic Intermediate |
| ISSN号 | 0251-0790 |
| 文献子类 | Article |
| 英文摘要 | The adsorption and decomposition of ethanol on the clean Rh(100) surface were studied using thermal desorption spectroscopy(TDS) and high resolution electron energy loss spectroscopy (HREELS). At 130 K, on Rh(100) surface, the adsorption started from a chemisorbed ethanol structure which was bonded to the surface through both O and H moieties, with the O-H bond almost parallel to the surfaces. Additional condensed phase of adsorbed ethanol was found to exist through hydrogen bonding. At about 150 K, the multilayer-adsorbed ethanol desorbed from the surfaces, while the remaining chemisorbed ethanol completely converted to an ethoxy species via the first decomposition step in which O-H bond scission occurred. The small amount of methane formed indicated that the dehydrogenation of the ethoxide intermediates on the clean Rh(100) surface was non-selective. Loss of hydrogen from the methylene group would result in the formation of an aldehyde intermediate. Decarbonylation of the aldehyde intermediates produced methane and CO. This pathway appeared to be a minor one for ethoxide decomposition on Rh(100). The main ethoxide dehydrogenation proceeded via the cleavage of a C-H bond on the methyl group, resulting in the formation of an oxametallocyclic intermediate. The loss spectra at similar to 629 cm(-1) is assigned to this intermediate. The C-C bond scission occurred at the same time in the oxametallocyclic dehydrogenation sequence, Then the CO and hydrocarbon moieties were formed on the surface. |
| WOS关键词 | ALCOHOLS ; STABILIZATION ; PATHWAYS ; RH(111) ; ACETATE |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:A1997XL89300030 |
| 出版者 | HIGHER EDUCATION PRESS |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/168262]  |
| 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 | Tian, ZJ,Wei, XM,Zhai, RS,et al. HREELS studies of ethanol adsorption and decomposition on Rh(100) surface[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,1997,18(7):1153-1158. |
| APA | Tian, ZJ,Wei, XM,Zhai, RS,Ren, SZ,Liang, DB,&Lin, LW.(1997).HREELS studies of ethanol adsorption and decomposition on Rh(100) surface.CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,18(7),1153-1158. |
| MLA | Tian, ZJ,et al."HREELS studies of ethanol adsorption and decomposition on Rh(100) surface".CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE 18.7(1997):1153-1158. |
入库方式： OAI收割
来源：大连化学物理研究所
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