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Metal Fluorides Metal Chlorides and Halogenated Metal Oxides as Lewis Acidic Heterogeneous Catalysts. Providing Some Context for Nanostructured Metal Fluorides

机译:金属氟化物金属氯化物和卤化金属氧化物作为路易斯酸性多相催化剂。为纳米结构金属氟化物提供一些背景

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摘要

Aspects of the chemistry of selected metal fluorides, which are pertinent to their real or potential use as Lewis acidic, heterogeneous catalysts, are reviewed. Particular attention is paid to β-aluminum trifluoride, aluminum chlorofluoride and aluminas γ and η, whose surfaces become partially fluorinated or chlorinated, through pre-treatment with halogenating reagents or during a catalytic reaction. In these cases, direct comparisons with nanostructured metal fluorides are possible. In the second part of the review, attention is directed to iron(III) and copper(II) metal chlorides, whose Lewis acidity and potential redox function have had important catalytic implications in large-scale chlorohydrocarbons chemistry. Recent work, which highlights the complexity of reactions that can occur in the presence of supported copper(II) chloride as an oxychlorination catalyst, is featured. Although direct comparisons with nanostructured fluorides are not currently possible, the work could be relevant to possible future catalytic developments in nanostructured materials.
机译:审查了与其作为路易斯酸性多相催化剂的实际或潜在用途有关的所选金属氟化物的化学方面。通过用卤化试剂预处理或在催化反应过程中,应特别注意β-三氟化铝,三氟化氯铝和γ和η氧化铝的表面部分被氟化或氯化。在这些情况下,可以与纳米结构的金属氟化物进行直接比较。在本综述的第二部分中,注意力集中在铁(III)和铜(II)金属氯化物上,其路易斯酸度和潜在的氧化还原功能在大规模氯代烃化学中具有重要的催化意义。最近的工作强调了在负载的氯化铜(II)作为氧氯化催化剂的情况下可能发生的反应的复杂性。尽管目前尚无法与纳米结构氟化物进行直接比较,但这项工作可能与未来纳米结构材料的催化发展有关。

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