Abstract
The selective oxidation of aniline towards high value-added products in water is of great importance from both the elimination of aniline pollutant in water and the production of high value-added chemicals points of view. Herein, we report the synthesis and application of a {Ce3}-sandwiching germanotungstate K10Na4[Ce3(μ2-O)3(GeW9O34)2]·24H2O (1) in the selective oxidation of aniline and derivatives towards corresponding nitroso compounds in water with diluent H2O2 as the oxidant. Compound 1 has been carefully characterized by X-ray single-crystal diffraction, TG, FT-IR, PXRD, XPS, and SEM. Under optimized condition, aniline can be quantitatively converted and the selectivity towards nitrosobenzene reaches up to 86.0% without any additives. The performance comparisons of different catalysts reveal that the structural combination of oxo-cerium and oxo-tungsten facilitates the enhancement of catalytic performance.
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