Pyrolysis of 1,2-dichloroethane over Ni–Cr catalyst at resistive heating

Yuri I. Bauman, Svetlana S. Sigaeva, Ilya V. Mishakov, Aleksey A. Vedyagin, Pavel G. Tsyrulnikov, Denis V. Korneev, Roman A. Buyanov

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The features of the catalytic pyrolysis of chlorohydrocarbons over resistive Ni–Cr alloy were studied using 1,2-dichloroethane as a model substrate. The heating of the catalyst was provided by a direct supply of current on nichrome spiral wire. Such parameters as the temperature of spiral wire (550–700 °C), hydrogen concentration (0–60 vol%) and preliminary activation conditions (acidic or oxidative-reductive treatment of wire surface) were varied in the study. The formation of dispersive nickel particles (up to 0.5 μm in size) catalyzing carbon fiber growth in accordance with the mechanism of carbide cycle was found to be a result of the carbon corrosion of the resistive Ni–Cr alloy. This process was shown to be conjugated with hydrodechlorination taking place within the studied conditions. The decomposition of chlorohydrocarbon goes preferably through the route of C–Cl bond hydrogenolysis when hydrogen is absent from the reaction mixture. Ethylene was found to be the main gas-phase product. The addition of hydrogen into the reaction mixture leads to the hydrogenation of ethylene with the formation of ethane and increases the amount of deposited carbon, which is subjected to partial hydrogenation with methane formation.

Original languageEnglish
Pages (from-to)1-11
Number of pages11
JournalReaction Kinetics, Mechanisms and Catalysis
Volume120
Issue number2
DOIs
Publication statusAccepted/In press - 17 Jan 2017

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pyrolysis
Hydrogen
Pyrolysis
wire
Wire
Heating
catalysts
Catalysts
Hydrogenation
hydrogenation
heating
Ethylene
ethylene
hydrogen
Carbon
Nichrome (trademark)
hydrogenolysis
Hydrogenolysis
Ethane
carbon

Keywords

  • 1,2-Dichloroethane
  • Carbon corrosion
  • Carbon nanofibers
  • Hydrodechlorination
  • Nichrome
  • Resistive catalyst

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

Cite this

Pyrolysis of 1,2-dichloroethane over Ni–Cr catalyst at resistive heating. / Bauman, Yuri I.; Sigaeva, Svetlana S.; Mishakov, Ilya V.; Vedyagin, Aleksey A.; Tsyrulnikov, Pavel G.; Korneev, Denis V.; Buyanov, Roman A.

In: Reaction Kinetics, Mechanisms and Catalysis, Vol. 120, No. 2, 17.01.2017, p. 1-11.

Research output: Contribution to journalArticle

Bauman, Yuri I. ; Sigaeva, Svetlana S. ; Mishakov, Ilya V. ; Vedyagin, Aleksey A. ; Tsyrulnikov, Pavel G. ; Korneev, Denis V. ; Buyanov, Roman A. / Pyrolysis of 1,2-dichloroethane over Ni–Cr catalyst at resistive heating. In: Reaction Kinetics, Mechanisms and Catalysis. 2017 ; Vol. 120, No. 2. pp. 1-11.
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