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Fe3O4@BNPs@SiO2–SO3H as a highly chemoselective heterogeneous magnetic nanocatalyst for the oxidation of sulfides to sulfoxides or sulfones

机译:Fe3O4 @ BNPs @ SiO2-SO3H是一种高度化学选择性的异质磁性纳米催化剂,用于将硫化物氧化为亚砜或砜

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To achieve green chemistry goals and also to reduce the cost of catalysts as well as to avoid producing toxic wastes and show the importance of separation and recycling of catalysts from the reaction medium, in this work, we describe the preparation and characterization of magnetic acidic boehmite nanoparticles as a heterogeneous catalyst, which is called Fe _(3) O _(4) @BNPs@SiO _(2) –SO _(3) H. This catalyst works efficiently in the selective oxidation of sulfides to sulfoxides or sulfones in the presence of H _(2) O _(2) as a green oxidant. It can easily be separated from the reaction medium by using an external magnet and it was recycled 6 times without loss of magnetic catalytic properties.
机译:为了实现绿色化学目标并降低催化剂成本以及避免产生有毒废物,并显示从反应介质中分离和回收催化剂的重要性,在这项工作中,我们描述了磁性酸性勃姆石的制备和表征纳米颗粒作为非均相催化剂,称为Fe _(3)O _(4)@ BNPs @ SiO _(2)–SO _(3)H。该催化剂有效地将硫化物选择性氧化为亚砜或砜。 H _(2)O _(2)作为绿色氧化剂的存在。使用外部磁体可以很容易地将其从反应介质中分离出来,并循环使用6次而不会丧失磁催化性能。

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