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Catalytic oxidation of cyclic hydrocarbons with hydrogen peroxide using Fe complexes immobilized into montmorillonite
Catalysis Today ( IF 5.2 ) Pub Date : 2019-12-17 , DOI: 10.1016/j.cattod.2019.12.023
Syuhei Yamaguchi , Daijiro Ihara , Yuki Yamashita , Yudai Uemoto , Hidenori Yahiro

[Fe(Ligand)x]2+ complexes immobilized into montmorillonite ([Fe(Ligand)x]2+@Mont, Ligand: 2,2′;6′,2′'-terpyridine (x = 2), 1,10-phenanthroline (x = 3), and 2,2′-bipyridine (x = 3)) were prepared by an ion-exchange method whereby cations present within montmorillonite (probably Ca2+) were replaced by [Fe(Ligand)x]2+ complexes provided by [Fe(Ligand)x](ClO4)2. The catalytic properties of the species obtained were then investigated in the oxidation of cyclic hydrocarbons, such as cyclohexane and benzene, with H2O2. The catalytic oxidation of cyclohexane and benzene with H2O2 over [Fe(Ligand)x]2+@Mont catalysts proceeded, and the desired alcohols were obtained as the main reaction products, whereas no catalytic activity was displayed by neat montmorillonite. Regardless of the reaction conditions, [Fe(terpy)2]2+@Mont (terpy stands for 2,2′;6′,2′'-terpyridine) exhibited the best catalytic performance in the oxidation of the mentioned substrates by H2O2, among all the catalysts tested.



中文翻译:

用固定在蒙脱土中的铁配合物用过氧化氢催化氧化环烃。

[Fe(Ligand)x ] 2+络合物固定在蒙脱土中([Fe(Ligand)x ] 2+ @Mont,配体:2,2'; 6',2''-三联吡啶(x = 2),1,10 -菲咯啉(x = 3)和2,2'-联吡啶(x = 3))是通过离子交换法制备的,其中蒙脱石(可能是Ca 2+)中存在的阳离子被[Fe(Ligand)x ]取代由[Fe(Ligand)x ](ClO 42提供的2+配合物。然后在用H 2 O 2氧化环烃(例如环己烷和苯)中研究了所得物质的催化性能。。在[Fe(Ligand)x ] 2+ @Mont催化剂上进行了H 2 O 2催化环己烷和苯的氧化反应,获得了所需的醇作为主要反应产物,而纯蒙脱土未显示出催化活性。无论反应条件如何,[Fe(terpy )2 ] 2+ @Mont(terpy代表2,2'; 6',2''-叔吡啶)在上述底物被H 2氧化时表现出最佳的催化性能。O 2,在所有测试过的催化剂中。

更新日期:2019-12-17
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