Abstract
The ion-exchange between the transition metal monosubstituted heteropolyoxometalate anion [SiW11O39-Co(H2O)]6− and the anionic clay Zn2Al(OH)6NO3· xH2O by the action of ultrasound gave the heteropolyanion-pillared layered double hydroxide Zn2Al-(OH)6[SiW11O39Co(H2O)]1/6·4H2O within 7 min. The product was characterized by powder X-ray diffraction, i.r. spectroscopy and elemental analysis. The results show that the gallery height of the complex is 1.00±0.02 nm and the heteropolyanion [SiW11O39-Co(H2O)]6− entering the layer retains the integrity of the Keggin structure. Experimentally, the atomic ratio of each element in the formula is Zn:Al = 2.1:0.95 and Si:W:Co = 0.96:10.90:0.98.
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Hu, C., Zhang, X., He, Q. et al. The rapid synthesis of the heteropolyoxometalate-pillared layered double hydroxide Zn2Al(OH)6[SiW11O39Co(H2O)]1/6 · 4H2O by the action of ultrasound. Transition Metal Chemistry 22, 197–199 (1997). https://doi.org/10.1023/A:1018439802661
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DOI: https://doi.org/10.1023/A:1018439802661