| 钒氧化物团簇正离子与乙烯在流动管反应器中的反应 |
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| 引用本文： | 王炜罡,王哲瑁,殷实,何圣贵,葛茂发.钒氧化物团簇正离子与乙烯在流动管反应器中的反应[J].化学物理学报,2007,20(4):412-418. |
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| 作者姓名： | 王炜罡 王哲瑁 殷实 何圣贵 葛茂发 |
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| 作者单位： | 北京分子科学国家实验室，中国科学院化学研究所分子动态与稳态结构国家重点实验室，北京100080,北京分子科学国家实验室，中国科学院化学研究所分子动态与稳态结构国家重点实验室，北京100080,北京分子科学国家实验室，中国科学院化学研究所分子动态与稳态结构国家重点实验室，北京100080,北京分子科学国家实验室，中国科学院化学研究所分子动态与稳态结构国家重点实验室，北京100080,北京分子科学国家实验室，中国科学院化学研究所分子动态与稳态结构国家重点实验室，北京100080 |
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| 摘 要： | 利用一套自建的配有团簇产生和化学反应源的飞行时间质谱装置，研究了钒氧化物团簇正离子(VmOn+)与乙烯(C2H4)在气相条件下的反应．激光溅射产生的钒等离子体与氧气分子在超声喷射下反应，产生m=1?10和n=1?26 (具体数字依赖于m) 的VmOn+，然后与流动管反应器中的乙烯反应． 该实验条件下， 氧饱和团簇(2n?5m)往往含有氢原子(VmOnH2x+)．与乙烯反应时，相对于VmOnH2x+，VmOn+表现出比较高的反应活性，而且，小团簇比大团簇具有较高的反应活性．观测到的反应产物大都为碰撞结合体V
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| 关 键 词： | 飞行时间质谱仪 钒氧化物团簇 流动管反应器 反应活性 |
| 收稿时间： | 2007/6/28 0:00:00 |
| 修稿时间： | 2007/7/13 0:00:00 |
Reaction of Cationic Vanadium Oxide Clusters with Ethylene in a Flow Tube Reactor |
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| Wei-gang Wang,Zhe-chen Wang,Shi Yin,Sheng-gui He and Mao-fa Ge.Reaction of Cationic Vanadium Oxide Clusters with Ethylene in a Flow Tube Reactor[J].Chinese Journal of Chemical Physics,2007,20(4):412-418. |
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| Authors: | Wei-gang Wang Zhe-chen Wang Shi Yin Sheng-gui He and Mao-fa Ge |
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| Institution: | Beijing National Laboratory for Molecular Science, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China,Beijing National Laboratory for Molecular Science, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China,Beijing National Laboratory for Molecular Science, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China,Beijing National Laboratory for Molecular Science, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China,Beijing National Laboratory for Molecular Science, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China |
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| Abstract: | A time of °ight mass spectrometer coupled with a cluster formation and reaction source is employed to study the reactivity of cationic vanadium oxide clusters (VmOn+) toward ethylene (C2H4) in the gas phase. The cationic vanadium oxide clusters with m=1-10 and n=1-26 (depending on m) are generated by reaction of laser ablation created vanadium plasma with O2 in a supersonic expansion and then reacted with the ethylene in a °ow tube reactor. Hydrogen atoms are attached in most of the oxygen saturated clusters(2n?5m) in our experimental condition. The reactivity of VmOn+ toward C2H4 is usually higher than that of hydrogen containing clusters, VmOnH2x
+. Larger clusters show less reactivity than smaller ones. Most of the observed products are in the forms of VmOnC2H4+ and VmOnH2xC2H4+ due to direct association. C2H4 clustering products ((C2H4)n+, n=2-6) are also observed. |
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