Promoting Effect of Co, Cu, Cr and Fe on Activity of Ni-Based Alloys in Catalytic Processing of Chlorinated Hydrocarbons

Yuri I. Bauman, Ilya V. Mishakov, Aleksey A. Vedyagin, Aleksandr V. Rudnev, Pavel E. Plyusnin, Yury V. Shubin, Roman A. Buyanov

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

A series of sponge-like Ni1−xMx (M = Cu, Co, Cr, Fe; x = 0.00–0.10) alloys was prepared via synthetic routes with subsequent reduction in H2 atmosphere at 800–1000 °C. Formation of Ni-based solid solutions with face-cantered cubic (fcc) lattice of nickel was proven by X-ray diffraction analysis for all prepared samples. Ni1−xMx alloys were explored as precursors for self-organizing catalysts active in processing of 1,2-dichloroethane into carbon nanomaterial (CNM). According to kinetic studies of CNM growth performed at 600 °C, the catalytic activity of Ni1−xMx samples changes as follows: Cr > Co–Cu ≫ Fe. Ni–Cr sample showed rather stable performance during 4 h whereas Ni–Co, Ni–Cu and Ni (reference) samples underwent rapid deactivation after ~150 min of reaction. The presence of the residual amount of Cr (0.5 at.%) found by energy dispersive X-ray microanalysis method in the composition of active Ni particles responsible for the growth of CNM is considered to be a key factor providing the stable catalytic performance. The obtained carbon product is represented by well-ordered segmented fibers (0.4–0.8 μm in diameter) and characterized with comparatively high textural parameters (surface area 290–330 m2/g, pore volume 0.43–0.57 cm3/g).

Original languageEnglish
Pages (from-to)171-177
Number of pages7
JournalTopics in Catalysis
Volume60
Issue number1-2
DOIs
Publication statusPublished - 1 Feb 2017

Keywords

  • 1,2-Dichloroethane
  • Catalytic decomposition
  • Chlorinated hydrocarbons
  • Metal dusting
  • Nickel and its alloys
  • Segmented carbon fibers
  • Self-organizing catalysts

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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