Syntheses, Characterizations and Catalytic Activities of Rare Earth Derivatives of Molybdotungstovanado-Phosphoric Heteropoly Acid

稀土学报(英文版), 2002, 20(6): 596-601.

周百斌 ^1, , 韦永德 ^2, , 马慧媛 ^3, , 王玉和 ^4, , 单永奎 ^5,

1.Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001, China;Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001, China

2.Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001, China

3.Department of Chemistry, Harbin Normal University, Harbin 150080, China

4.Department of Chemistry, Harbin Normal University, Harbin 150080, China

5.Department of Chemistry, East China Normal University, Shanghai 200237, China

基金项目: 黑龙江省自然科学基金(B-96005) 国家自然科学基金(29671009)

Syntheses, Characterizations and Catalytic Activities of Rare Earth Derivatives of Molybdotungstovanado-Phosphoric Heteropoly Acid

Keywords： rare earths

Seven new-type pentabasic heteropoly complexes with the general molecular formula K10H5[Ln(PMo5W4V2O39)2]*nH2O(Ln=La, Ce, Pr, Nd, Eu, Gd, Dy) were synthesized. The results of IR, UV, 31P, 51V NMR and X-ray powder diffraction pattern demonstrate that the product still maintains Keggin structure. The thermal stability studied by water solubility test, TG-DTA, XRD and IR at various temperature shows that the range of pyrolysis temperature is from 500～550 ℃. The catalytic action varies according to the contents of rare earths which are used to catalyze the decomposition of hydrogen peroxide.

参考文献

[1]	Neumann R;Vega M .Oxidation of alkylaromatic compounds with hydrogen peroxide catalyzed by mixed addenda Keggin heteropolyanions[J].Journal of Molecular Catalysis(China),1993,84:93.
[2]	Wang Enbo;Hu Changwen;Xu Lin.Introduction of Polyacid Chemistry[M].北京:化学工业出版社,1998:170.
[3]	刘景福,陈亚光,马建方,王晓红,刘娅.穴状稀土杂多化合物的生物活性研究[J].中国稀土学报,2000(03):282-285.
[4]	Shan Yongkui;Liu Zongxu;Jin Zhongsheng et al.Synthesis and crystal structure of heteropoly molybdosilicic lanthanide K10H3[Pr(SiMo11O39)2]*18H2O[J].中国科学B辑(英文版),1990,8(08):793.
[5]	Ma Huiyuan;Shan Yongkui;Zhou Baibin et al.Synthesis and properties of heteropoly tungstovanadogermanic complex with rare earth elements[J].Journal of the Chinese Rare Earth Society,2000,18(02):97.
[6]	КокоринА И .Тетрагетерополикислоты c ЦентральнымАтомомФосфора[J].Ж О Х,1957,27:449.
[7]	Xu Xueqin;Shan Yongkui;Lui Zhongxu .A method of composition analysis for the system of rare earth molybdenum-vanadium-silicium[J].Hashida Zirankexue Xuebao(in Chin),1989,5(01):50.
[8]	Rocchiccioli-Deltcheff C;Fournier M;Franck R et al.Vibrational investigations of polyoxometalates. 2. Evidence for anion-anion interactions in molybdenum(Ⅵ) and tungsten(Ⅵ) compounds related to the Keggin structure[J].Inorganic Chemistry,1998(22):207.
[9]	Zhang Ruohua.Rare Earth Elemental Chemistry[M].天津:天津科学技术出版社,1987:48.
[10]	Yue Shitai;Hua Shiying;Qiu Zuwen .NMR and ESR study of heteropolyanions the 31P 51V 17O NMR spectra of P-V-W Keggin anions[J].Chinese Journal of Microwave and Radio-frequency Spectroscopy(in Chin),1988,5(03):197.
[11]	Wang Zuoping;Niu Jinyan;Xu Lin et al.Study on thermal property of heteropolyacid with Keggin structure[J].化学学报,1995(53):757.

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网

Syntheses, Characterizations and Catalytic Activities of Rare Earth Derivatives of Molybdotungstovanado-Phosphoric Heteropoly Acid

参考文献