Promotional effect of palladium in Co-SiO2 core@shell nanocatalysts for selective liquid phase hydrogenation of chloronitroarenes

Bustamante, Tatiana M.; Campos, Cristian H.; Fraga, Marco A.; Fierro, J.L.G.; Pecchi, Gina

doi:10.1016/j.jcat.2020.03.006

Cited by 31 publications

(20 citation statements)

References 67 publications

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“…In recent years, the catalytic reduction of halogenated nitrobenzene focuses on heterogeneous hydrogenation using H 2 as a reducing agent due to its straightforwardness, environmentfriendliness, and atom-economy. 6 Nevertheless, the classical hydrogenation catalysts usually generate highly toxic byproducts such as hydroxylamines, nitroso, azo, and azoxy derivatives, which are harmful to the environment. 7 Furthermore, the hydrodehalogenation reaction leads to the formation of environmentally unfriendly acid.…”

Section: ■ Introductionmentioning

confidence: 99%

Tuning the Electron Density of Metal Nickel via Interfacial Electron Transfer in Ni/MCM-41 for Efficient and Selective Catalytic Hydrogenation of Halogenated Nitroarenes

Huang

Tang

Hao

et al. 2022

ACS Sustainable Chem. Eng.

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Catalytic hydrogenation of nitrocompound is an environment-benign strategy for the production of important aniline intermediates. Herein, MCM-41 was synthesized from sepiolite via an in situ self-assembled method, and the modified MCM-41 supported nickel-based catalysts were prepared and applied in halogenated nitrobenzene hydrogenation to halogenated aniline. As compared to Ni/MCM-41, the Sn-or La-modified MCM-41 supported nickel-based catalysts exhibited better catalytic performance. The electron transfer from Sn or La species to Ni led to a downshift in the d-band center of Ni, which was in favor of H desorption and hence promoted hydrogenation activity. It was found that chloronitrobenzene preferred the tilted adsorption orientation mode on the surface of Ni−Sn and Ni−La 2 O 3 to flat adsorption orientation. Moreover, the C−Cl bond scission on Ni−Sn and Ni−La 2 O 3 was thermodynamically unfavorable in comparison with pure-phased Ni, leading to higher selectivity to chloroaniline. Ni/LaMCM-41-NH 2 gave the best catalytic performance of 100% conversion and 99.6% selectivity to m-chloroaniline.

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Section: ■ Introductionmentioning

confidence: 99%

Tuning the Electron Density of Metal Nickel via Interfacial Electron Transfer in Ni/MCM-41 for Efficient and Selective Catalytic Hydrogenation of Halogenated Nitroarenes

Huang

Tang

Hao

et al. 2022

ACS Sustainable Chem. Eng.

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“…Conventionally, various oxide materials such as SiO 2 , Al 2 O 3 , and TiO 2 are used to support Co-based catalysts. SiO 2 and Al 2 O 3 are preferentially used owing to their large surface areas, abrasion resistance, and excellent mechanical properties ( Bustamante et al, 2020 ; Wolf et al, 2020 ; Xu et al, 2020 ). However, the relatively strong interaction between cobalt oxide and the support leads to the generation of irreducible substances, such as CoAl 2 O 4 or Co 2 SiO 4 ( Bustamante et al, 2020 ; Li et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

“…SiO 2 and Al 2 O 3 are preferentially used owing to their large surface areas, abrasion resistance, and excellent mechanical properties ( Bustamante et al, 2020 ; Wolf et al, 2020 ; Xu et al, 2020 ). However, the relatively strong interaction between cobalt oxide and the support leads to the generation of irreducible substances, such as CoAl 2 O 4 or Co 2 SiO 4 ( Bustamante et al, 2020 ; Li et al, 2020 ). As a result, the number of surface active sites on the support decreases, which limits the activity for long-chain hydrocarbons ( Wang et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Highly Dispersed CoO Embedded on Graphitized Ordered Mesoporous Carbon as an Effective Catalyst for Selective Fischer–Tropsch Synthesis of C5+ Hydrocarbons

et al. 2022

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Herein, we report the high Fischer–Tropsch synthesis performance of the Co-based catalysts supported on graphitized ordered mesoporous carbon (GMC-900) by using a facile strategy. Compared with CMK-3 and active carbon (AC), the obtained GMC-900 by using pollution-free soybean oil as a carbon source exhibited enhanced catalytic performance after loading Co species due to its highly crystallized graphitic structure and uniform dispersion of CoO. As a result, Co/GMC-900 was an effective catalyst with the maximum C5+ selectivity of 52.6%, which much outperformed Co/CMK-3 and Co/AC. This research provides an approach to produce advanced Co-based catalysts with satisfactory performance for efficient Fischer–Tropsch synthesis.

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“…Initial pertinent reports introduced cobalt(II) and iron(II) acetate-phenanthroline combinations for the creation of heterogeneous catalysts that enabled a convenient method for the syntheses of various organic amines [ 37 , 38 , 39 ]. Following these findings, a great deal of reports on the preparation of cobalt-based nanocomposites and their use in the reduction of nitroarenes either by H 2 gas or proper hydrogen transfer reagents (hydrazine, formic acid) have emerged [ 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 ]. It was established that the activity of these materials is heavily dependent on the nitrogen concentration [ 64 ] and, hence, the deployment of N-rich polydentate chelators is a promising means for the manufacture of empowered heterogeneous catalysts that are activated through annealing.…”

Section: Introductionmentioning

confidence: 99%

Mild and Efficient Heterogeneous Hydrogenation of Nitroarenes Facilitated by a Pyrolytically Activated Dinuclear Ni(II)-Ce(III) Diimine Complex

Michalke

Faust

Bögl

et al. 2022

IJMS

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We communicate the assembly of a solid, Ce-promoted Ni-based composite that was applied as catalyst for the hydrogenation of nitroarenes to afford the corresponding organic amines. The catalytically active material described herein was obtained through pyrolysis of a SiO2-pellet-supported bimetallic Ni-Ce complex that was readily synthesized prior to use from a MeO-functionalized salen congener, Ni(OAc)2·4 H2O, and Ce(NO3)3·6 H2O. Rewardingly, the requisite ligand for the pertinent solution phase precursor was accessible upon straightforward and time-saving imine condensation of ortho-vanillin with 1,3-diamino-2,2′-dimethylpropane. The introduced catalytic protocol is operationally simple in that the whole reaction set-up is quickly put together on the bench without the need of cumbersome handling in a glovebox or related containment systems. Moreover, the advantageous geometry and compact-sized nature of the used pellets renders the catalyst separation and recycling exceptionally easy.

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Promotional effect of palladium in Co-SiO2 core@shell nanocatalysts for selective liquid phase hydrogenation of chloronitroarenes

Cited by 31 publications

References 67 publications

Tuning the Electron Density of Metal Nickel via Interfacial Electron Transfer in Ni/MCM-41 for Efficient and Selective Catalytic Hydrogenation of Halogenated Nitroarenes

Tuning the Electron Density of Metal Nickel via Interfacial Electron Transfer in Ni/MCM-41 for Efficient and Selective Catalytic Hydrogenation of Halogenated Nitroarenes

Highly Dispersed CoO Embedded on Graphitized Ordered Mesoporous Carbon as an Effective Catalyst for Selective Fischer–Tropsch Synthesis of C5+ Hydrocarbons

Mild and Efficient Heterogeneous Hydrogenation of Nitroarenes Facilitated by a Pyrolytically Activated Dinuclear Ni(II)-Ce(III) Diimine Complex

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