引用本文:
马荣华, 刘春涛, 瞿伦玉. 过氧钛杂多配合物位置异构体的合成、表征及催化性能[J]. 应用化学,
2002, 19(4): 342-345.
Citation: MA Rong-Hua, LIU Chun-Tao, QU Lun-Yu. Synthesis, Characterization and Catalylical Activity of Heteropolytungstates Containing Peroxotitanium[J]. Chinese Journal of Applied Chemistry, 2002, 19(4): 342-345.
Citation: MA Rong-Hua, LIU Chun-Tao, QU Lun-Yu. Synthesis, Characterization and Catalylical Activity of Heteropolytungstates Containing Peroxotitanium[J]. Chinese Journal of Applied Chemistry, 2002, 19(4): 342-345.
过氧钛杂多配合物位置异构体的合成、表征及催化性能
摘要:
合成了5种钨硅杂多配合物异构体T-K6[SiW11TiO40]·xH2O和T-、Ui-K6[SiW11TiO39]·xH2O(Ui=U1,U2,U3).IR光谱、UV光谱、极谱、I--S2O32-滴定证明,合成的杂多配合物中有TiO2基存在,183W NMR谱证明其阴离子具有Keggin结构.催化实验结果表明,合成的化合物对烯烃环氧化反应具有催化活性,且过氧杂多配合物的催化活性高于非过氧杂多配合物,U异构体的催化活性高于T异构体
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关键词:
- 过氧钛钨硅杂多配合物
- / 异构体
- / 环氧化反应
- / 催化活性
English
Synthesis, Characterization and Catalylical Activity of Heteropolytungstates Containing Peroxotitanium
Abstract:
Five heteropoly compound(HPC) isomers T-K6[SiW11TiO40]·xH2O and T-,Ui-K6[SiW11TiO40]·xH2O(Ui=U1,U2,U3) were synthesized and characterized. The IR, UV spectrometry, polarography and chemical titration results confirmed the existence of TiO2 groups in the complexes. The 183W NMR spectra of all of the complexes revealed the Keggin structure of anions in the compounds. The experiment of catalytic oxidation of maleic acid by H2O2 showed the catalytic activities of these complexes were higher than those of their corresponding complexes without peoxo ions, and catalytic activies of U-isomer was higher than T-isomer.
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Key words:
- peroxotitanoheteropolytungstate
- / isomer
- / epoxidation
- / catalytic activity
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