Gas-phase chemistry of Mo, Ru, W, and Os metal carbonyl complexes
文献类型：期刊论文
| 作者 | Bai, J.2 ; Wang, Y.2,3,4; Qin, Z.2; Fan, F. -L.2; Fan, F. -Y.2,4; Tan, C. -M.2; Li, Z.2; Tian, W.2,4; Zhao, L.; Tian, L. -L.2
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| 刊名 | RADIOCHIMICA ACTA
 |
| 出版日期 | 2014-02-01 |
| 卷号 | 102页码:69-76 |
| 关键词 | Short-lived Radioisotopes Mo Ru w And Os Carbonyls Isothermal Gas Chromatography Adsorption Enthalpy |
| ISSN号 | 0033-8230 |
| DOI | 10.1515/ract-2014-2157 |
| 文献子类 | Article |
| 英文摘要 | Metal carbonyl complexes were used for studying the gas-phase chemical behavior of Mo, Ru, W and Os isotopes with an on-line low temperature isothermal gas chromatography apparatus. Short-lived Mo and Ru isotopes were produced by a Cf-252 spontaneous fission source. Short-lived nuclides of W and Os were produced using the heavy ion reactions F-19 + Tb-159 and Ho-165, respectively. Short-lived products were thermalized in a recoil chamber filled with a gas mixture of helium and carbon monoxide. The carbonyls formed were then transported through capillaries to an isothermal chromatography column for study of the adsorption behavior as a function of temperature. On-line isothermal chromatography (IC) experiments on Teflon (PTFE) and quartz surfaces showed that short-lived isotopes of the listed elements can form carbonyl complexes which are very volatile and interact most likely in physical sorption processes. Deduced adsorption enthalpies of Mo and Ru carbonyls were -38 +/- 2 kJ/mol and -36 +/- 2 kJ/mol, respectively. These values are in good agreement with literature data, partly obtained with different chromatographic techniques. A validation of the applied Monte Carlo model to deduce adsorption enthalpies with Mo isotopes of different half-lives proved the validity of the underlying adsorption model. The investigations using a gas-jet system coupled to a heavy ion accelerator without any preseparator clearly showed the limitations of the approach. The He and CO gas mixture, which was directly added into the chamber, will result in decomposition of CO gas and produce some aerosol particles. After the experiment of W-173 and Os-179 in the heavy ion experiments, the Teflon column was covered by a yellowish deposit; the adsorption enthalpy of W and Os carbonyls could therefore not be properly deduced using Monte Carlo simulations. |
| WOS关键词 | IHRER TECHNETIUM-TOCHTER ; ZERFALLSREIHE ; FISSION |
| 资助项目 | National Natural Science Foundation of China[20901080] ; National Natural Science Foundation of China[11079006] ; National Natural Science Foundation of China[11205216] |
| WOS研究方向 | Chemistry ; Nuclear Science & Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:000331141200007 |
| 出版者 | WALTER DE GRUYTER GMBH |
| 源URL | [http://119.78.100.186/handle/113462/49279]  |
| 专题 | 近代物理研究所_实验物理中心 |
| 通讯作者 | Qin, Z. |
| 作者单位 | 1.Paul Scherrer Inst, CH-5232 Villigen, Switzerland 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 3.Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bai, J.,Wang, Y.,Qin, Z.,et al. Gas-phase chemistry of Mo, Ru, W, and Os metal carbonyl complexes[J]. RADIOCHIMICA ACTA,2014,102:69-76. |
| APA | Bai, J..,Wang, Y..,Qin, Z..,Fan, F. -L..,Fan, F. -Y..,...&Zhang, X..(2014).Gas-phase chemistry of Mo, Ru, W, and Os metal carbonyl complexes.RADIOCHIMICA ACTA,102,69-76. |
| MLA | Bai, J.,et al."Gas-phase chemistry of Mo, Ru, W, and Os metal carbonyl complexes".RADIOCHIMICA ACTA 102(2014):69-76. |
入库方式： OAI收割
来源：近代物理研究所
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