Controllable synthesis of carbon encapsulated iron phosphide nanoparticles for the chemoselective hydrogenation of aromatic nitroarenes to anilines†,Inorganic Chemistry Frontiers

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Controllable synthesis of carbon encapsulated iron phosphide nanoparticles for the chemoselective hydrogenation of aromatic nitroarenes to anilines†
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2018-03-06 00:00:00 , DOI: 10.1039/c7qi00803a
Yanan Zhu _{1,

2,

3,

4,

5} , Shuliang Yang _{1,

2,

3,

4,

5} , Changyan Cao _{1,

2,

3,

4,

5} , Weiguo Song _{1,

2,

3,

4,

5} , Li-Jun Wan _{1,

2,

3,

4,

5}

Affiliation

Selective hydrogenation of nitroarenes is an important chemical transformation to obtain functionalized anilines as key intermediates for pharmaceuticals and fine chemicals. Compared to the well-studied noble metal catalysts, heterogeneous catalysts based on low-cost transition metals are rarely reported. In this study, we developed an efficient and controllable route to synthesize a new kind of heterogeneous catalyst of iron phosphide nanoparticles encapsulated in a doped carbon matrix for the chemoselective hydrogenation of aromatic nitroarenes to anilines. Making use of the chemical reaction between Fe atoms in a MIL-88B-NH₂ core and phosphorus atoms in a poly(cyclotriphosphazene-co-4,4′-sulfonyldiphenol) (PZS) shell, iron phosphide nanoparticles encapsulated in a doped carbon matrix were successfully prepared through direct calcinations of a Fe-MOF@PZS core@shell precursor at 900 °C for 2 h under an Ar atmosphere. Due to the relative high surface area and porous structure as well as small nanoparticles, the prepared catalyst showed high catalytic activity, excellent selectivity and recyclability for the hydrogenation of aromatic nitroarenes to anilines.

中文翻译：

碳包裹的磷化铁纳米颗粒的可控合成，用于芳族硝基芳烃化学选择性加氢为苯胺†

硝基芳烃的选择性加氢是重要的化学转化方法，以获得功能化的苯胺作为药物和精细化学品的关键中间体。与经过充分研究的贵金属催化剂相比，基于低成本过渡金属的非均相催化剂的报道很少。在这项研究中，我们开发了一种有效且可控的途径来合成一种新型的非均相的磷化铁纳米颗粒非均相催化剂，该催化剂包裹在掺杂的碳基质中，用于芳族硝基芳烃的化学选择性加氢成苯胺。利用MIL-88B-NH _2中的Fe原子之间的化学反应通过直接煅烧Fe-MOF @ PZS core @ shell前体成功制备了聚（环三磷腈-co-4,4'-磺酰基二酚）（PZS）壳中的核和磷原子，成功地制备了包裹在掺杂碳基质中的磷化铁纳米粒子在Ar气氛中于900°C放置2小时。由于相对高的表面积和多孔结构以及小的纳米颗粒，所制备的催化剂显示出高的催化活性，优异的选择性和可再循环性，用于芳族硝基芳烃氢化成苯胺。

更新日期：2018-03-06

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