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Synthesis and Characterization of Vanadium Substituted Dawson-Type Heteropoly Acid (Mo, As)

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【Author】 ZHANG Jing, LI Juan 2, 3, YU Li-qiong1, WEI Xian-yin1, LIU Li-ping1, HUANG Ru-dan1 (1.School of Science, Beijing Institute of Technology, Beijing 100081, China; 2.Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun 130022, China; 3.Department of Chemistry, Normal College, Beihua University, Jilin 132013, China)

【机构】 .Key Laboratory of Rare Earth Chemistry and Physics Changchun Institute of Applied Chemistry Chinese Academy of Science Changchun 130022 China； Department of Chemistry Normal College Beihua University Jilin 132013 China)； School of Science Beijing Institute of Technology Beijing 100081 China；

【Abstract】 Five novel vanadium substituted series of Dawson-type heteropoly acid H₇[As₂Mo17VO62]·10H₂O（l）,H₈[As₂Mo16V₂O62]·7H₂O（2）, H₉[As₂Mo15V₃O62]·8H₂O（3）,H₈[As₂Mo14V₄O62H₂]·7H₂O（4）, H₉[As₂Mo13V₅O62H₂]·10H₂O（5） were prepared respectively in aqueous solution. When magnetic stirring and pH meter monitoring, all reactants mixed and controled different pH, then the mixture was refluxed for 10?h, later extracted by aether when it cooled, finally, it could be recrystaled by 0.5% sulphuic acid solution, then yielded productions that we need. Compounds （1）-（5） were characterized by elemental analysis,thermogravimetic analysis （TGA）, infrared spectroscopy （IR）, ultraviolet and visible spectroscopy（UV-Vis）, X-ray powder diffraction analysis, 51V nuclear magnetic resonance （ 51V NMR） structure analysis. The study indicates that these compounds possess Dawson structures. 51V NMR spectra reveals that V atom is polar-site substituted indeed.更多还原

【关键词】 heteropoly acid； Dawson-type； 51V nuclear magnetic resonance ( 51V NMR)；
【Key words】 heteropoly acid； Dawson-type； 51V nuclear magnetic resonance ( 51V NMR)；

【基金】 SponsoredbytheNationalNaturalScienceFoundationofChina(20371007)

【文献出处】 Journal of Beijing Institute of Technology(English Edition) ,北京理工大学学报(英文版) , 编辑部邮箱 ,2006年03期

【分类号】O611.4
【下载频次】62

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