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在乙腈的酸性水溶液中,考察了Pd(OAc)2、Pd(NO3)2、PdCl2和苯醌(BQ)组成的催化体系在环己烯氧化合成环己酮反应中的催化活性,探索了酸度对Pd(OAC)2/BQ催化活性的影响.结果表明,Pd(OAc)2/BQ和Pd(NO3)2/BQ对环乙烯氧化合成环己酮显示了较高的催化活性,而PdCl2/BQ的活性则较低,无水和无酸存在的溶液中,Pd(OAc)2/BQ对环己烯氧化未显现任何催化活性.并用紫外可见光谱(UV-Vis)、循环伏安法考察了该催化体系的作用机理
The catalytic activity of the catalytic system composed of Pd (OAc) 2, Pd (NO3) 2, PdCl2 and benzoquinone (BQ) in the cyclohexanone oxidation was investigated in acidic aqueous solution of acetonitrile. On the catalytic activity of Pd (OAC) 2 / BQ. The results showed that the catalytic activity of Pd (OAc) 2 / BQ and Pd (NO3) 2 / BQ for the synthesis of cyclohexanone from cycloethylene was higher, while the activity of PdCl2 / BQ was lower. The presence of anhydrous and acid Pd (OAc) 2 / BQ did not show any catalytic activity for cyclohexene oxidation. The mechanism of the catalytic system was investigated by UV-Vis and cyclic voltammetry