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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. shu

Synthesis, Characterization and Catalylical Activity of Heteropolytungstates Containing Peroxotitanium

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a Department of Chemistry, Qiqihar University, Qiqihar 161006;
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b Qiqihar Environmental Monitoring Centre, Qiqihar;
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c College of Chemistry, Northeast Normal University, Changchun

Corresponding author: MA Rong-Hua,
Received Date: 18 September 2001
Available Online: 31 December 2001
Fund Project: 国家自然科学基金资助项目(29471009) (29471009)

Five heteropoly compound(HPC) isomers T-K₆[SiW₁₁TiO₄₀]·xH₂O and T-,U_i-K₆[SiW₁₁TiO₄₀]·xH₂O(U_i=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.
- peroxotitanoheteropolytungstate,
- isomer,
- epoxidation,
- catalytic activity
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