Nonself-sustained microwave discharge in a system for hydrocarbon decomposition and generation of carbon nanotubes

Yury D. Korolev, Oleg B. Frants, Nikolay V. Landl, Vladimir G. Geyman, Aleksey G. Zerlitsyn, Vladimir P. Shiyan, Yury V. Medvedev

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

This paper deals with the investigation of a method for sustainment of high-power microwave discharge in the installation for natural-gas decomposition. The essence of the method is to provide a generation of auxiliary discharge plasma in the area where the main microwave plasma torch burns. The design of the electrode system of auxiliary discharge resembles that for a coaxial plasmatron that consumes an average current of about 0.1 A. Then, the nonself-sustained microwave discharge with a frequency of 2.45 GHz has been obtained at a power level from 1 to 3 kW. Such a discharge has been used in the installation for natural-gas decomposition and generation of the carbon nano- tubes. With a typical gas flow of 1 m3/h, the natural-gas conversion achieves 40%-80%. Three types of nanotubes are contained in the final product: multilayer tubes, single-layer tubes, and onion-type tubes.

Original languageEnglish
Article number5313884
Pages (from-to)2298-2302
Number of pages5
JournalIEEE Transactions on Plasma Science
Volume37
Issue number12
DOIs
Publication statusPublished - 1 Dec 2009

Keywords

  • Glow-to-spark transition
  • Microwave discharge
  • Nanotubes
  • Plasma torches

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

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