Synthesis of nickel nanocapsules and carbon nanotubes via methane CVD

Ziebro, Janusz; Łukasiewicz, Iwona; Grzmil, Barbara; Borowiak‐Palen, E.; Michalkiewicz, Beata

doi:10.1016/j.jallcom.2009.06.039

Cited by 31 publications

(14 citation statements)

References 30 publications

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“…The effects of initiator concentration, temperature, CH 4 pressure, the initial concentration of SO 3 , and solvent acidity were investigated.…”

Section: Vargaftik Et Almentioning

confidence: 99%

Homogeneous catalytic systems for selective oxidation of methane: state of the art

Balcer

2015

Polish Journal of Chemical Technology

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Homogeneous catalysts for methane oxidation are of a particular interest from scientifi c and economic points of view. The results show a great potential for activation and functionalization of CH bonds of unreactive methane. There are still gaps in the knowledge of how to rationally design catalysts for this process. In this paper state-ofthe-art. in methane oxidation homogenous catalysis is presented.

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“…The effects of initiator concentration, temperature, CH 4 pressure, the initial concentration of SO 3 , and solvent acidity were investigated.…”

Section: Vargaftik Et Almentioning

confidence: 99%

Homogeneous catalytic systems for selective oxidation of methane: state of the art

Balcer

2015

Polish Journal of Chemical Technology

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“…The experimental setup and the catalyst preparation procedures had been reported in detail previously [11][12][13]. The CoF-CNT growth was carried out at atmospheric pressure in a conventional gas-flow system.…”

Section: Continuous Cobalt Nanowires Synthesismentioning

confidence: 99%

“…The interlayer spacing d 002 was determined by using the Bragg law [12]. The graphitization degree of carbon was calculated by the Maire and Mering formula [15].…”

Section: Characterizationmentioning

confidence: 99%

Low temperature one-step synthesis of cobalt nanowires encapsulated in carbon

Majewska

Michalkiewicz

2013

Appl. Phys. A

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The one-step method of carbon nanotubes filled with continuous cobalt nanowires (CoF-CNT) synthesis is presented. Co/ZSM-5 (8 wt% Co) was used as catalyst for CoF-CNT production by methane decomposition at the temperature of 400°C and 800°C at atmospheric pressure in a conventional gas-flow system. The average diameter of the CoF-CNT is about 25 and 40 nm for products obtained at 400°C and at 800°C, respectively. The average size of coherently scattering domains along the normal to graphite layers L c , the interlayer spacing d 002 , the graphitization degree of carbon, and the relative intensities of the G and D bands in Raman spectroscopy were determined to characterize the quality of carbon. It was proved that cobalt-filled carbon nanotubes can be produced by a simple method. The results of XRD, FE-SEM, and TEM show that CoF-CNT can be obtained even at 400°C by catalytic decomposition of methane. On the basis of XRD, TEM, Raman spectroscopy was found that at a temperature of 800°C, a better quality of carbon was produced.

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“…Al 2 O 3 , SiO 2 , TiO 2 , ZrO 2 , MgO, SiO 2 , Al 2 O 3 , and SiO 2 were usually used as support [25]. ZSM-5 zeolite was investigated as a support by our research team for 5 years [24,26,27] although Choudhary et al [28] stated that H-ZSM-5 supported nickel cannot be used to produce filamentous carbon.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Carbon Nanomaterials over Ni/ZSM-5 Catalyst Using Simplex Method Algorithm

Majewska

Michalkiewicz

2016

Acta Phys. Pol. A

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Carbon nanomaterials were prepared from methane by catalytic decomposition over a nickel-supported ZSM-5 catalyst. The mole ratio of SiO2 to Al2O3 in ZSM-5 was 200-400. The nickel content was varied from 17 to 23 wt% Ni. In order to find the greatest yield and the highest quality of carbon nanomaterials the simplex design method for planning the experiments was applied. Different parameters such as: temperature, methane flow, nitrogen flow and nickel content in the catalyst were evaluated. The carbon nanomaterials were analyzed by the Raman spectroscopy, scanning and transmission electron microscopy, and total organic carbon analyzer.

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Synthesis of nickel nanocapsules and carbon nanotubes via methane CVD

Cited by 31 publications

References 30 publications

Homogeneous catalytic systems for selective oxidation of methane: state of the art

Homogeneous catalytic systems for selective oxidation of methane: state of the art

Low temperature one-step synthesis of cobalt nanowires encapsulated in carbon

Preparation of Carbon Nanomaterials over Ni/ZSM-5 Catalyst Using Simplex Method Algorithm

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