Chromium dioxide - synthesis and morphology

Dinesh Kumar Agrawal, A. K. Biswas, C. N.R. Rao, E. C. Subbarao

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Abstract

Chromium dioxide was synthesized by a sealed tube reaction starting from CrO 3 and CaCl 2 .2H 2 O. Yields of CrO 2 upto 90 percent could be obtained with 7 mole percent of CaCl 2 .2H 2 O at 360°C for 24 hrs. An ambient pressure of about 30 atm is estimated to be produced by the gases and vapours emitted during the reaction. Under certain conditions, acicular particles with length to width ratio of∼10 (constituting∼75 percent of the particles) were produced by this procedure.

Original languageEnglish (US)
Pages (from-to)1135-1142
Number of pages8
JournalMaterials Research Bulletin
Volume13
Issue number11
DOIs
StatePublished - Jan 1 1978

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Agrawal, D. K., Biswas, A. K., Rao, C. N. R., & Subbarao, E. C. (1978). Chromium dioxide - synthesis and morphology. Materials Research Bulletin, 13(11), 1135-1142. https://doi.org/10.1016/0025-5408(78)90200-3