Processing of organochlorine waste components on bulk metal catalysts

Yu I. Bauman, I. V. Mishakov, A. A. Vedyagin, S. V. Dmitriev, M. S. Mel'Gunov, R. A. Buyanov

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

A method for destroying chloroorganic waste components on catalysts, particularly bulk metal nickel (99.99%), nichrome (80% Ni and 20% Cr), and chromel (90% Ni and 10% Cr) is proposed. The process is accompanied by the formation of carbon nanofibers (CNFs) with feathery morphology. Catalytic destruction of 1,2-dichloroethane on bulk nickel catalysts is characterized by a long induction period (∼3 h) with spontaneous activation of the alloy's surface. Preactivation of the catalyst with acids or by alternative treatment in oxidizing and reducing environments shortens the induction period by one order of magnitude. The state of the surface before and after activation is studied by SEM, TEM, and EDX. The activity of catalysts is determined for the decomposition of 1,2-dichloroethane at temperatures of 500 to 700 C. Nichrome exhibited the greatest activity (yield of CNFs, 400 g/g of catalyst); the yield of CNFs on catalysts prepared by coprecipitation and mechanical activation was considerably lower. The proposed approach combines organochlorine waste disposal with the production of a useful product (CNFs). The use of bulk metal catalysts is promising since it simplifies the technology for their preparation, and the absence of carriers makes it easy to cleanse CNFs of impurities of catalyst fragments.

Original languageEnglish
Pages (from-to)261-266
Number of pages6
JournalCatalysis in Industry
Volume4
Issue number4
DOIs
Publication statusPublished - Oct 2012
Externally publishedYes

Keywords

  • 1,2-dichloroethane (DCE)
  • bulk metals and alloys
  • carbon erosion
  • carbon nanofibers
  • catalytic decomposition
  • chromium
  • nickel
  • organochlorine waste
  • utilization methods

ASJC Scopus subject areas

  • Catalysis

Fingerprint Dive into the research topics of 'Processing of organochlorine waste components on bulk metal catalysts'. Together they form a unique fingerprint.

Cite this