Phenylacetylene hydrogenation on Fe@C and Ni@C core–shell nanoparticles: About intrinsic activity of graphene-like carbon layer in H2 activation

Erokhin, A. V.; Локтева, Е. С.; Yermakov, A. Ye.; Boukhvalov, Danil W.; Maslakov, K. I.; Голубина, Е. В.; Уймин, М. А.

doi:10.1016/j.carbon.2014.03.034

Cited by 76 publications

(50 citation statements)

References 29 publications

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“…Furthermore, the time evolution curves that correspond to the conversion of phenylacetylene using Pd‐MDPC(3.97) and Pd‐MDPC(2.39) in the methanol system were plotted (Figure ). An apparently linear trend for the conversion versus time in the Pd‐MDPC(3.97)/methanol system is observed, which indicates a zeroth‐order reaction and has been demonstrated in previous studies ,,,. However, in the Pd‐MDPC(2.39)/methanol system, the initial linear trend was not maintained throughout the reaction, which could be explained by the competitive adsorption between phenylacetylene and styrene on the surfaces of Pd in the later stage of the reaction.…”

Section: Resultssupporting

confidence: 71%

Palladium Nanoparticles Immobilized on Magnetic Porous Carbon Derived from ZIF‐67 as Efficient Catalysts for the Semihydrogenation of Phenylacetylene under Extremely Mild Conditions

Zhang

Liu

et al. 2016

ChemCatChem

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A new magnetic porous carbon (MDPC) derived from metal–organic frameworks (MOFs) was synthesized successfully through the direct carbonization of ZIF‐67 crystals and utilized as a support for Pd nanocatalysts. The prepared MDPC not only retains the original morphology of ZIF‐67 crystals but also provides a high surface area and excellent magnetic properties. The designed catalysts (Pd‐MDPC) were tested in the semihydrogenation of phenylacetylene under extremely mild conditions. The Pd nanoparticles are highly dispersed on the MDPC matrix without aggregation and exhibited an excellent catalytic activity and high selectivity toward olefins under mild conditions (25 °C, H2 1 atm). The Pd‐MDPC catalysts were further investigated in the semihydrogenation of several other terminal alkynes. Compared with most traditional carbon materials, such as activated carbon and carbon nanotubes, the MDPC possesses an admirable magnetism so that it could be separated magnetically from the reaction system. Our study indicates that MOF‐derived porous carbon is a suitable support for noble‐metal nanocatalysts and has promise in the field of nanocatalysis.

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Section: Resultssupporting

confidence: 71%

Palladium Nanoparticles Immobilized on Magnetic Porous Carbon Derived from ZIF‐67 as Efficient Catalysts for the Semihydrogenation of Phenylacetylene under Extremely Mild Conditions

Zhang

Liu

et al. 2016

ChemCatChem

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“…The size of Ni nanoparticles ranges from 2 to 10 nm. The nanocapsules contain a metal particle encapsulated in the cavity, and the outer shell is composed of several carbon layers of a few nanometers in thickness [30][31][32].…”

Section: Methodsmentioning

confidence: 99%

Carbon-Coated Nickel Nanoparticles: Effect on the Magnetic and Electric Properties of Composite Materials

et al. 2018

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Nickel nanoparticles coated with few layers of carbon have been embedded into the polydimethylsiloxane (PDMS) matrix in concentrations up to 11 vol %. Dielectric and magnetic properties of composite materials have been studied in wide frequency (20 Hz-1 MHz) and temperature (130-430 K) ranges. It was demonstrated that the temperature behavior of dielectric properties is determined by glass transitions in the PDSM matrix below 200 K and the Maxwell-Wagner relaxation above room temperature. The possibility of using fabricated composites on the basis of the PDMS matrix for producing a wide range of passive electromagnetic components, such as frequency-selective filters, wide-band detectors/sensors of a bolometric type, and even electromagnetic "black holes" is also discussed.

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“…What is more, the activity of Co 0 @GP is further improved by 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 15 debated. 48,49 A more in-depth work on the reaction mechanism is to be further investigated. Figure 6.…”

Section: The Reusability Of the Catalyst And Catalytic Active Sites Amentioning

confidence: 99%

In Situ-Generated Co⁰-Co₃O₄/N-Doped Carbon Nanotubes Hybrids as Efficient and Chemoselective Catalysts for Hydrogenation of Nitroarenes

et al. 2015

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The earth-abundant nanohybrids Co 0 /Co 3 O 4 @N-doped carbon nanotubes were fabricated via an efficient thermal condensation of D-glucosamine hydrochloride, melamine and Co(NO 3 ) 2 ·6H 2 O. The hybrids furnish excellent catalytic activity and perfect chemoselectivity (>99%) for a wide range of substituted nitroarenes (21 examples) under relatively mild conditions. The high catalytic performance and durability is attributed to the synergistic effects between each component, the unique structure of graphene layers-coated Co 0 and the electronic activation of doped nitrogen. Density functional calculations indicate that the inner Co 0 core and N species on the carbon shell can significantly decrease the dissociation energies of H 2 , giving evidence of the ability of carbon shell in the hybrids to H 2 activation. These results open up an avenue to design more powerful low-cost catalysts for industrial applications.

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Phenylacetylene hydrogenation on Fe@C and Ni@C core–shell nanoparticles: About intrinsic activity of graphene-like carbon layer in H2 activation

Cited by 76 publications

References 29 publications

Palladium Nanoparticles Immobilized on Magnetic Porous Carbon Derived from ZIF‐67 as Efficient Catalysts for the Semihydrogenation of Phenylacetylene under Extremely Mild Conditions

Palladium Nanoparticles Immobilized on Magnetic Porous Carbon Derived from ZIF‐67 as Efficient Catalysts for the Semihydrogenation of Phenylacetylene under Extremely Mild Conditions

Carbon-Coated Nickel Nanoparticles: Effect on the Magnetic and Electric Properties of Composite Materials

In Situ-Generated Co⁰-Co₃O₄/N-Doped Carbon Nanotubes Hybrids as Efficient and Chemoselective Catalysts for Hydrogenation of Nitroarenes

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Phenylacetylene hydrogenation on Fe@C and Ni@C core–shell nanoparticles: About intrinsic activity of graphene-like carbon layer in H2 activation

Cited by 76 publications

References 29 publications

Palladium Nanoparticles Immobilized on Magnetic Porous Carbon Derived from ZIF‐67 as Efficient Catalysts for the Semihydrogenation of Phenylacetylene under Extremely Mild Conditions

Palladium Nanoparticles Immobilized on Magnetic Porous Carbon Derived from ZIF‐67 as Efficient Catalysts for the Semihydrogenation of Phenylacetylene under Extremely Mild Conditions

Carbon-Coated Nickel Nanoparticles: Effect on the Magnetic and Electric Properties of Composite Materials

In Situ-Generated Co0-Co3O4/N-Doped Carbon Nanotubes Hybrids as Efficient and Chemoselective Catalysts for Hydrogenation of Nitroarenes

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In Situ-Generated Co⁰-Co₃O₄/N-Doped Carbon Nanotubes Hybrids as Efficient and Chemoselective Catalysts for Hydrogenation of Nitroarenes