Combustion synthesis of perovskite LnCrO3 powders using ammonium dichromate

J. J. Kingsley, L. R. Pederson

Research output: Contribution to journalArticle

91 Citations (Scopus)

Abstract

Fine-particle LnCrO3 perovskites, where Ln = rare earths, have been prepared by the exothermic redox decomposition of ammonium dichromate, lanthanum nitrate and glycine mixtures. The self-redox decomposition of ammonium dichromate enabled LnCrO3 to be formed by combustion synthesis using less glycine than mixtures containing chromium nitrate. Autoignition temperatures for precursor mixtures containing ammonium dichromate were lower than those containing chromium nitrate (< 170°C versus 180 to 210°C, respectively). Ammonium dichromate-containing precursors combusted at lower temperatures and produced powders having higher surface areas than precursor solutions containing chromium nitrate.

Original languageEnglish
Pages (from-to)89-96
Number of pages8
JournalMaterials Letters
Volume18
Issue number1-2
DOIs
Publication statusPublished - 1993
Externally publishedYes

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combustion synthesis
Combustion synthesis
chromates
Powders
Perovskite
nitrates
Nitrates
chromium
Chromium
glycine
Glycine
Amino acids
Decomposition
decomposition
spontaneous combustion
Lanthanum
perovskites
lanthanum
Rare earths
rare earth elements

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Combustion synthesis of perovskite LnCrO3 powders using ammonium dichromate. / Kingsley, J. J.; Pederson, L. R.

In: Materials Letters, Vol. 18, No. 1-2, 1993, p. 89-96.

Research output: Contribution to journalArticle

Kingsley, J. J. ; Pederson, L. R. / Combustion synthesis of perovskite LnCrO3 powders using ammonium dichromate. In: Materials Letters. 1993 ; Vol. 18, No. 1-2. pp. 89-96.
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