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利用原位红外光谱法研究标题化合作在N2 中的反应行为。发现它们在不同温度下能使丙酸分别转化为乙醛和戊酮。金属氧化物对丙酸的戊酮化反应活性顺序是 :Fe3O4 >MnO2 >Cr2 O3>Co2 O3>Ni2 O3,这顺序与下列簇合物对该反应的活性顺序类似 :[Fe2 MnOPH]>[Fe3OPH]>[Fe2 CrOPH]>[Fe2 CoOPH]>[Fe2 NiOPH]>[Cr3OPH][OPH =(μ3 O) (μ O2 CC2 H5) 6(H2 O) 3]。对于戊酮化反应 ,过渡金属氧化物的反应温度明显高于相应的 [Fe2 MOPH]的反应温度 ,这旁证了 [Fe2 MOPH]的活性组分不是其金属氧化物。还讨论了Fe3O4 ,Fe2 O3 对丙酸分别转化为乙醛和戊酮反应活性的明显差异。
In situ IR spectroscopy was used to study the reaction behavior of the title cooperation in N2. They were found to convert propionic acid to acetaldehyde and pentanone, respectively, at different temperatures. The order of activity of the metal oxide to propionate was: Fe3O4> MnO2> Cr2O3> Co2O3> Ni2O3, which was similar to the following cluster in the order of activity: [Fe2MnOPH]> [Fe3OPH ]> [Fe2 CrOPH]> [Fe2 CoOPH]> [Fe2 NiOPH]> [Cr3 OPH] [OPH = (μ3 O) (μ O2 CC2 H5) 6 (H2 O) 3]. For the pentanation reaction, the reaction temperature of the transition metal oxide is significantly higher than the corresponding reaction temperature of [Fe2 MOPH], which confirms that the active component of [Fe2 MOPH] is not its metal oxide. The significant differences in the reactivity of Fe3O4, Fe2O3 to propionaldehyde to acetaldehyde and pentanone, respectively, were also discussed.