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    • 44. 发明授权
    • Composite material composed of nanoparticles of transition metal and magnetic ferric oxide, a methode of preparing the same, and uses of the same
    • 由过渡金属纳米颗粒和磁性氧化铁组成的复合材料,其制备方法及其用途
    • US07947191B2
    • 2011-05-24
    • US11577750
    • 2005-10-12
    • Yuan WangJunling ZhangMinghui LiangXiaodong WangYongge WeiLinlin Gui
    • Yuan WangJunling ZhangMinghui LiangXiaodong WangYongge WeiLinlin Gui
    • B01J21/00
    • C01G49/06B01J23/8906B01J35/0013B82Y30/00C01G49/08C01P2002/85C01P2004/04C01P2004/64C01P2004/80C07C209/36Y02P20/582Y10S977/773Y10S977/811C07C211/52
    • A composite material composed of nanoparticles of transition metal(s) and magnetic ferric oxide, a method of preparing the same, and uses of the same are provided. The composite material is substantially composed of nanoparticles of transition metal(s) or alloy thereof and nanoparticles of magnetic ferric oxide, the size of nanoparticles of transition metal(s) or alloy thereof is in the range of 0.7 to 5 nm, the size of nanoparticles of magnetic ferric oxide is in the range of 5 to 50 nm, and the amount of transition metal(s) or alloy thereof is in the range of 0.1 to 30 wt %, based on the total weight of composite material, the magnetic ferric oxide is gamma-Fe2O3, Fe3O4, complex obtained from gamma-Fe2O3 by partial reduction, or complex obtained from Fe3O4 by partial reduction. The composite material has a high reactivity and an extreme selectivity for industrial reaction of hydrogenating halogeno-nitro-aromaticics to obtain halogeno-arylamine, and has important industrial applicability because the problem such as hydrogenolysis-dehalogenation during preparing halogeno arylamine by hydrogenating halogeno-nitro-aromatics is fully resolved by using the composite materials.
    • 提供了由过渡金属和磁性氧化铁的纳米颗粒组成的复合材料,其制备方法及其用途。 复合材料基本上由过渡金属或其合金的纳米颗粒和磁性氧化铁纳米颗粒组成,过渡金属或其合金的纳米颗粒的尺寸在0.7至5nm的范围内, 磁性氧化铁的纳米颗粒在5至50nm的范围内,并且过渡金属或其合金的量在0.1至30重量%的范围内,基于复合材料的总重量,磁铁 氧化物是γ-Fe 2 O 3,Fe 3 O 4,通过部分还原由γ-Fe 2 O 3获得的络合物,或通过部分还原从Fe 3 O 4获得的络合物。 该复合材料具有高的反应性和极端的选择性,用于氢化卤代 - 硝基芳族化合物以获得卤代 - 芳基胺的工业反应,并具有重要的工业应用性,因为在通过氢化卤代 - 硝基 - 芳基胺制备卤代芳基胺期间的氢解 - 芳烃通过使用复合材料完全解决。