Effect of Mo on the catalytic activity of Ni-based self-organizing catalysts for processing of dichloroethane into segmented carbon nanomaterials

Yury I. Bauman, Yulia V. Rudneva, Ilya V. Mishakov, Pavel E. Plyusnin, Yury V. Shubin, Denis V. Korneev, Vladimir O. Stoyanovskii, Aleksey A. Vedyagin, Roman A. Buyanov

Research output: Contribution to journalArticle

Abstract

A series of micro-disperse Ni-Mo alloys with the sponge-like structure was prepared by a simultaneous precipitation method followed by sintering of the sediment in H2 atmosphere at 800 °C. According to XRD data, the formation of single-phase solid solution Ni1-xMox took place for the samples with Mo content of 0.6–8.3 wt.%. Synthesized samples were studied in a process of the catalytic CVD of C2H4Cl2 at 550–700 °C. In situ kinetic studies of carbon deposition process were carried out in a flow gravimetric setup equipped with McBain balances. An interaction of Ni-Mo alloys with C2H4Cl2 is accompanied by their rapid disintegration with formation of disperse active particles catalyzing the growth of carbon nanomaterials (CNM). The strong boosting effect of Mo on the catalytic performance of Ni was revealed. The maximum yield of CNM product (8.3 wt.% Mo, 600 °C, 120 min) was as high as 45 g/gM. The study on effect of the reaction temperature on the CNM yield allowed one to define an optimal temperature regime. The impact of Mo concentration upon the morphology, structural features and textural properties of the produced carbon fibers was investigated by means of SEM, TEM, Raman spectroscopy and low-temperature nitrogen adsorption. The role of chemisorbed chlorine species in a pulse-to-pulse regime of the segmented carbon filaments formation was discussed.

Original languageEnglish
Article numbere02428
JournalHeliyon
Volume5
Issue number9
DOIs
Publication statusPublished - 1 Sep 2019

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Ethylene Dichlorides
Nanostructured materials
Catalyst activity
Carbon
Catalysts
Processing
Disintegration
Chlorine
Temperature
Raman spectroscopy
Chemical vapor deposition
Solid solutions
Sediments
Nitrogen
Sintering
Transmission electron microscopy
Adsorption
Scanning electron microscopy
Kinetics

Keywords

  • Bulk Ni-Mo alloy
  • Carbon nanofibers
  • Catalysis
  • Heterogeneous catalysis
  • Heterogeneous methods
  • Kinetics of carbon deposition
  • Materials science
  • Segmented structure
  • Self-disintegration
  • Self-organizing catalysts

ASJC Scopus subject areas

  • General

Cite this

Effect of Mo on the catalytic activity of Ni-based self-organizing catalysts for processing of dichloroethane into segmented carbon nanomaterials. / Bauman, Yury I.; Rudneva, Yulia V.; Mishakov, Ilya V.; Plyusnin, Pavel E.; Shubin, Yury V.; Korneev, Denis V.; Stoyanovskii, Vladimir O.; Vedyagin, Aleksey A.; Buyanov, Roman A.

In: Heliyon, Vol. 5, No. 9, e02428, 01.09.2019.

Research output: Contribution to journalArticle

Bauman, Yury I. ; Rudneva, Yulia V. ; Mishakov, Ilya V. ; Plyusnin, Pavel E. ; Shubin, Yury V. ; Korneev, Denis V. ; Stoyanovskii, Vladimir O. ; Vedyagin, Aleksey A. ; Buyanov, Roman A. / Effect of Mo on the catalytic activity of Ni-based self-organizing catalysts for processing of dichloroethane into segmented carbon nanomaterials. In: Heliyon. 2019 ; Vol. 5, No. 9.
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abstract = "A series of micro-disperse Ni-Mo alloys with the sponge-like structure was prepared by a simultaneous precipitation method followed by sintering of the sediment in H2 atmosphere at 800 °C. According to XRD data, the formation of single-phase solid solution Ni1-xMox took place for the samples with Mo content of 0.6–8.3 wt.{\%}. Synthesized samples were studied in a process of the catalytic CVD of C2H4Cl2 at 550–700 °C. In situ kinetic studies of carbon deposition process were carried out in a flow gravimetric setup equipped with McBain balances. An interaction of Ni-Mo alloys with C2H4Cl2 is accompanied by their rapid disintegration with formation of disperse active particles catalyzing the growth of carbon nanomaterials (CNM). The strong boosting effect of Mo on the catalytic performance of Ni was revealed. The maximum yield of CNM product (8.3 wt.{\%} Mo, 600 °C, 120 min) was as high as 45 g/gM. The study on effect of the reaction temperature on the CNM yield allowed one to define an optimal temperature regime. The impact of Mo concentration upon the morphology, structural features and textural properties of the produced carbon fibers was investigated by means of SEM, TEM, Raman spectroscopy and low-temperature nitrogen adsorption. The role of chemisorbed chlorine species in a pulse-to-pulse regime of the segmented carbon filaments formation was discussed.",
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AU - Bauman, Yury I.

AU - Rudneva, Yulia V.

AU - Mishakov, Ilya V.

AU - Plyusnin, Pavel E.

AU - Shubin, Yury V.

AU - Korneev, Denis V.

AU - Stoyanovskii, Vladimir O.

AU - Vedyagin, Aleksey A.

AU - Buyanov, Roman A.

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N2 - A series of micro-disperse Ni-Mo alloys with the sponge-like structure was prepared by a simultaneous precipitation method followed by sintering of the sediment in H2 atmosphere at 800 °C. According to XRD data, the formation of single-phase solid solution Ni1-xMox took place for the samples with Mo content of 0.6–8.3 wt.%. Synthesized samples were studied in a process of the catalytic CVD of C2H4Cl2 at 550–700 °C. In situ kinetic studies of carbon deposition process were carried out in a flow gravimetric setup equipped with McBain balances. An interaction of Ni-Mo alloys with C2H4Cl2 is accompanied by their rapid disintegration with formation of disperse active particles catalyzing the growth of carbon nanomaterials (CNM). The strong boosting effect of Mo on the catalytic performance of Ni was revealed. The maximum yield of CNM product (8.3 wt.% Mo, 600 °C, 120 min) was as high as 45 g/gM. The study on effect of the reaction temperature on the CNM yield allowed one to define an optimal temperature regime. The impact of Mo concentration upon the morphology, structural features and textural properties of the produced carbon fibers was investigated by means of SEM, TEM, Raman spectroscopy and low-temperature nitrogen adsorption. The role of chemisorbed chlorine species in a pulse-to-pulse regime of the segmented carbon filaments formation was discussed.

AB - A series of micro-disperse Ni-Mo alloys with the sponge-like structure was prepared by a simultaneous precipitation method followed by sintering of the sediment in H2 atmosphere at 800 °C. According to XRD data, the formation of single-phase solid solution Ni1-xMox took place for the samples with Mo content of 0.6–8.3 wt.%. Synthesized samples were studied in a process of the catalytic CVD of C2H4Cl2 at 550–700 °C. In situ kinetic studies of carbon deposition process were carried out in a flow gravimetric setup equipped with McBain balances. An interaction of Ni-Mo alloys with C2H4Cl2 is accompanied by their rapid disintegration with formation of disperse active particles catalyzing the growth of carbon nanomaterials (CNM). The strong boosting effect of Mo on the catalytic performance of Ni was revealed. The maximum yield of CNM product (8.3 wt.% Mo, 600 °C, 120 min) was as high as 45 g/gM. The study on effect of the reaction temperature on the CNM yield allowed one to define an optimal temperature regime. The impact of Mo concentration upon the morphology, structural features and textural properties of the produced carbon fibers was investigated by means of SEM, TEM, Raman spectroscopy and low-temperature nitrogen adsorption. The role of chemisorbed chlorine species in a pulse-to-pulse regime of the segmented carbon filaments formation was discussed.

KW - Bulk Ni-Mo alloy

KW - Carbon nanofibers

KW - Catalysis

KW - Heterogeneous catalysis

KW - Heterogeneous methods

KW - Kinetics of carbon deposition

KW - Materials science

KW - Segmented structure

KW - Self-disintegration

KW - Self-organizing catalysts

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