化学专业外文文献原稿和译文

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1、1 外文文献原稿和译文外文文献原稿和译文  原原  稿稿  Facile synthesis of hierarchical coreshell Fe3O4MgAlLDHAu as magnetically recyclable catalysts for catalytic oxidation of alcohols A novel coreshell structural Fe3O4MgAlLDHAu nanocatalyst was simply synthesized via supporting Au nanoparticles on the MgAlL

2、DH surface of Fe3O4MgAlLDH nanospheres. The catalyst exhibited excellent activity for the oxidation of 1-phenylethanol, and can be effectively recovered by using an external magnetic field. The selective oxidation of alcohols to the corresponding carbonyl compounds is a greatly important transformat

3、ion in synthesis chemistry. Recently, it has been disclosed that hydrotalcite (layered double hydroxides: LDH)-supported Cu, Ag and Au nanoparticles as environmentally benign catalysts could catalyse the oxidation of alcohol with good efficiency. In particular, the Au nanoparticles supported on hydr

4、otalcite exhibit high activity for the oxidation of alcohols under atmospheric O2 without additives. It has been extensively demonstrated that the activity of the nanometre-sized catalysts will benefit from decreasing the particle size. However, as the size of the support is decreased, separation us

5、ing physical methods, such as filtration or centrifugation, becomes a difficult and time-consuming procedure. A possible solution could be the development of catalysts with magnetic properties, allowing easy separation of the catalyst by simply applying an external magnetic field. From the green che

6、mistry point of view, development of highly active, selective and recyclable catalysts has become critical. Therefore, magnetically separable nanocatalysts have received increasing attention in recent years because the minimization in the consumption of auxiliary substances, energy and time used in achieving separations can 2 result in significant economical and environmental benefits. Magnetic composites with a coreshell structure allow the integration of multiple functionalities into a single nan