Highly efficient non-noble metallic NiCu nanoalloy catalysts for hydrogenation of nitroarenes

Yao, Sheng; Lin, Xinrui; Yue, Shengnan; Yang, Liu; Zou, Xingli; Wang, Xueguang; Lu, Xionggang

doi:10.1039/d1ma00557j

Cited by 10 publications

(4 citation statements)

References 48 publications

(50 reference statements)

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“…Compared to noble metal catalysts, 3d-non-noble metals including Ni [21][22][23][24], Fe [25][26][27], and Co [28,29] are more desirable due to their low cost and widespread availability [30,31]. Besides, the monometallic, also bi-and trimetallic catalysts, such as NiCu/C@SiO 2 and LaCu 0.67 Si 1.3 , were reported to exhibit very high activity [32,33].…”

Section: Introductionmentioning

confidence: 99%

Nanostructured Ni-MoCx: An efficient non-noble metal catalyst for the chemoselective hydrogenation of nitroaromatics

Zhang

et al. 2023

Nano Res.

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Catalysts for chemoselective hydrogenation are of vital importance for the synthesis of various important chemicals and intermediates. Herein we developed a simple method for preparing a highly efficient Ni-MoCx nanocomposite catalyst via temperature-programmed carburization of a polyoxometalate precursor. X-ray diffraction (XRD), scanning transmission electron microscopy (STEM), X-ray photoelectron spectroscopy (XPS), and X-ray absorption spectroscopy (XAS) analyses indicate that the resulting mesoporous nanocomposite catalyst is made up of well-dispersed metallic nickel particles embedded in a MoCx matrix. This catalyst exhibits high activity and selectivity (> 99%) in the hydrogenation of various substituted nitroaromatics to corresponding anilines. The high efficiency is attributed to the intimate contact of the constituents favoring electron transfer and hydrogen adsorption. Dihydrogen is physisorbed on the carbide support and dissociates on the nickel particles, as evidenced by Mo K-edge X-ray absorption near-edge structure (XANES) spectra, density functional theory (DFT), and hydrogen—deuterium exchange. The remarkable catalytic performance of the catalyst could be traced back to the synergistic interaction between the Ni particles and the carbide support. In-situ infrared spectroscopy and DFT simulations indicated that the adsorption/activation of the nitro group is favored compared to that of other substituents at the aromatic ring. In recyclability tests, the Ni-MoCx nanocomposite showed no significant loss of catalytic performance in seven consecutive runs, indicating its robust nature.

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Section: Introductionmentioning

confidence: 99%

Nanostructured Ni-MoCx: An efficient non-noble metal catalyst for the chemoselective hydrogenation of nitroaromatics

Zhang

et al. 2023

Nano Res.

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“…In comparison to noble metal-containing catalysts, there are fewer base metal catalysts that permit the reduction of NO 3 − or nitroarenes at or near ambient conditions. 18–21 Among selected examples, we previously demonstrated that nanoscale Ni 2 P catalyzes the full hydrogenation of NO 3 − with very high selectivity toward ammonia (NH 3 ). 22 Computations showed that the Ni 2 P(001) surface exhibits partial H• saturation coverage, which enables coadsorption and thus activation and reduction of NO 3 − .…”

Section: Introductionmentioning

confidence: 99%

Nitrate and nitroarene hydrogenations catalyzed by alkaline-earth nickel phosphide clathrates

Adamson,

Wei,

Yox

et al. 2024

Dalton Trans.

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“…For example, CuNi alloy nanoparticles (NPs) exhibited good performance for catalytic transfer hydrogenation of nitroarene using ethylene glycol as the hydrogen donor, 32 while ceria-supported NiCo alloy catalysts derived from the metal-organic framework 33 demonstrated an aniline yield of 87.9% under 150 °C and 2 MPa of H 2 . NiCu/C@SiO 2 -800 34 catalysts could smoothly transform various substituted nitroaromatics to the corresponding aromatic amines at 120 °C and 2.0 MPa of H 2 , and CoN x -Co y Zn s @NPC catalysts 35 achieved high activity and selectivity, affording almost complete conversions and >98% selectivity in water/methanol mixed solvents. Although the obvious progress of non-noble metal catalysts for hydrogenation of nitroaromatics is achieved, the reaction conditions are still relatively critical, and their catalytic efficiency is required to be further promoted.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Mesoporous Silica-Supported NiCo Bimetallic Nanocatalysts and Their Enhanced Catalytic Hydrogenation Performance

Wang

et al. 2023

ACS Omega

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In this work, mesoporous silica SBA-16-supported NiCo bimetallic nanocatalysts were synthesized by coimpregnation of Ni and Co precursors followed by calcination and reduction, and various characterization techniques confirm the formation of NiCo bimetallic nanostructures in the catalysts. The synthesized NiCo/SBA-16 shows enhanced catalytic performance for hydrogenation of a series of nitroaromatics. Under the reaction conditions of 80 °C and 1.0 MPa of H2, the yields of aniline for nitrobenzene hydrogenation over NiCo0.3/SBA-16 can reach more than 99% at 2.0 h. The enhanced catalytic performance can be ascribed to the formation of NiCo bimetallic nanostructures, where the synergistic effect between Ni and Co improves their catalytic activities for hydrogenation of nitroaromatics.

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Highly efficient non-noble metallic NiCu nanoalloy catalysts for hydrogenation of nitroarenes

Abstract: Highly dispersed NiCu alloy nanoparticles supported on carbon-doped silica (NiCu/C@SiO2) were first prepared through the one-step impregnation with a mixed solution of nickel nitrate, cupric nitrate and glucose, followed by...

Cited by 10 publications

References 48 publications

Nanostructured Ni-MoCx: An efficient non-noble metal catalyst for the chemoselective hydrogenation of nitroaromatics

Nanostructured Ni-MoCx: An efficient non-noble metal catalyst for the chemoselective hydrogenation of nitroaromatics

Nitrate and nitroarene hydrogenations catalyzed by alkaline-earth nickel phosphide clathrates

Synthesis of Mesoporous Silica-Supported NiCo Bimetallic Nanocatalysts and Their Enhanced Catalytic Hydrogenation Performance

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