Ni/Mo2C nanowires and their carbon-coated composites as efficient catalysts for nitroarenes hydrogenation
Ni/Mo2C nanowires and their carbon-coated composites as efficient catalysts for nitroarenes hydrogenation
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Ni/Mo2C纳米线及其碳包覆复合材料作为硝基芳烃加氢的有效催化剂
DOI：
10.1016/j.apsusc.2016.10.151
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发表时间：
2017-02
影响因子：
6.7
通讯作者：
Gao Qingsheng
中科院分区：
文献类型：
--
作者：
Shu Yijin;He Sina;Xie Lifang;Chan Hang Cheong;Yu Xiang;Yang Lichun;Gao Qingsheng
硝基芳烃加氢制备高附加值的芳香胺需要活性和选择性的催化剂。镍基纳米结构由于其高效率、低成本、高地球丰度等优点而成为最有前途的催化剂，但其分散性差、耐久性差等缺点限制了镍基纳米结构的应用。本文中，Mo 2C纳米线被引入作为对高度分散的Ni的通用载体，由于在碳化物表面上的强金属-载体相互作用，实现了在3-硝基苯甲酸、4-硝基苯甲酸和硝基苯的氢化中的高活性。然而，促进选择性氢化的水的存在不幸地使Ni物质失活。进一步引入有效的碳涂层，以显着提高稳定性，保护活性Ni免受H+和H2O的腐蚀。本工作阐明了通过引入碳化物载体和碳涂层来实现高效和稳定的催化剂的可行途径，为开发高性能催化剂提供了一些启示。
The hydrogenation of nitroarenes to value-added aromatic amines requires active and selective catalysts. Due to the good efficiency, economic cost and high earth-abundance, Ni-based nanostructures emerge as the promising catalysts, which are however limited by the poor dispersion and unsatisfied durability. Herein, Mo2C nanowires was introduced as a versatile support towards the highly dispersive Ni owing to the strong metal-support interactions on carbide surface, accomplishing the high activity in the hydrogenation of 3-nitrobenzoic acid, 4-nitrobenzoic acid and nitrobenzene. However, the presence of water that promoted the selective hydrogenation unfortunately deactivated Ni species. An effective carbon coating was further introduced to remarkably enhance the stability, protecting active Ni from corrosive H+and H2O. This work elucidates a feasible way towards efficient and stable catalysts by the introduction of both carbide supports and carbon coating, shedding some light on the development of high-performance catalysts.
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DOI：
10.1016/j.apcata.2010.01.004
发表时间：
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期刊：
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