Synthesis, Characterization and Catalytic Activity for Phenol Hydroxylation of Rare Earth Molybdovanadophosphate Tetrabasic Heteropoly Complexes with Keggin Structure

Abstract

Abstract: Five rare earth molybdovanadophosphate heteropoly complexes were synthesized. Their general molecular formulas are (NH₄)₁₅ [RE(PMo₉V₂O₃₉ )₂]·xH₂O(RE=La³⁺ , Ce³⁺ , Gd³⁺ , Y³⁺ , Yb³⁺ ). Their structures and properties were investigated by IR, UV, XRD, ICP, TG DTA, and cyclic voltammogram. The results show that these five complexes have the same Keggin structure and excellent catalytic activity for phenol hydroxylation with H₂O₂ to diphenol.

Key words: Heteropoly complex, Phenol hydroxylation, Hydrogen peroxide, Rare earth

CLC Number:

O643

TrendMD:

LIN Shen, ZHENG Ying, XU Li-Min, WANG Shi-Ming . Synthesis, Characterization and Catalytic Activity for Phenol Hydroxylation of Rare Earth Molybdovanadophosphate Tetrabasic Heteropoly Complexes with Keggin Structure[J]. Chem. J. Chinese Universities, 2000, 21(8): 1248.

References

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