Functionalized multi-walled carbon nanotubes supported Ni-based catalysts for adiponitrile selective hydrogenation to 6-aminohexanenitrile and 1,6-hexanediamine: Switching selectivity with [Bmim]OH
Functionalized multi-walled carbon nanotubes supported Ni-based catalysts for adiponitrile selective hydrogenation to 6-aminohexanenitrile and 1,6-hexanediamine: Switching selectivity with [Bmim]OH
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功能化多壁碳纳米管负载镍基催化剂用于己二腈选择性加氢生成6-氨基己腈和1,6-己二胺:用[Bmim]OH切换选择性
DOI:
10.1016/j.jcat.2019.03.023
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发表时间:
2019-04
影响因子:
7.3
通讯作者:
Hean Luo
中科院分区:
文献类型:
--
作者:
Yang Lv;Haishuai Cui;Pingle Liu;Fang Hao;Wei Xiong;Hean Luo
Functionalized multi-walled carbon nanotubes supported nickel-based catalysts were prepared and.applied in adiponitrile (ADN) hydrogenation. The characterization results show that different functional.groups such as NH2A, COOHA, OHA on MWCNTs surface can effectively act on metal ions by electrostatic.attractions and chemical interactions so as to provide nucleation sites, and N species in MWCNTs can act.as active sites for Ni deposition due to the strong electronic interactions between N species and Ni so as to.promote ultra-small Ni nanoparticles formation, decrease NiO reduction activation energy, increase zerovalent Ni amounts as well as Ni nanoparticles dispersion. Furthermore, the doped N increases the lewis.basicity, which favors the formation of primary amine of 6-aminohexanenitrile (ACN) and 1,6-.hexanediamine (HDA). Moreover, the basic ionic liquid [Bmim]OH may switch the selectivity by inhibiting nucleophilic addition of the primary amine to the a-carbon of aldimine via the stabilization of ANH2.groups in the amino-imine intermediates so as to impede by-products formation. In addition, the mechanism for ADN hydrogenation in [Bmim]OH was studied by density functional theory calculations. Under.optimized conditions, it gives 97.80% total selectivity to ACN and HDA at 95.34% ADN conversion over Ni/.N-MWCNTs-800 in the presence of [Bmim]OH.
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DOI:
10.1016/j.molcata.2016.10.029
发表时间:
2017
期刊:
Journal of Molecular Catalysis A: Chemical
影响因子:
--
作者:
Fang Hao;Pingle Liu;Shaofeng Xiong;He'an Luo
通讯作者:
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影响因子:
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DOI:
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DOI:
10.1039/ft9938903507
发表时间:
1993
期刊:
Journal of the Chemical Society, Faraday Transactions
影响因子:
--
作者:
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影响因子:
22.1
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A. O. Al-Youbi;J. D. L. Fuente;F. Pérez-Alonso;A. Obaid;J. Fierro;M. Peña;M. A. Salam;S. Rojas