Preparation of LaCoO3 with high surface area for catalytic combustion by spray-freezing/freeze-drying method

Seong Ho Lee, Hak Ju Kim, Jun Woo Nam, Heon Jung, Sung Kyu Kang, Kwan Young Lee

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Perovskite-type LaCoO3 oxides were prepared using citrate precursor by spray-freezing/freeze-drying. The calcination temperature for a single phase of LaCoO3 could be lowered to 500°C without formation of any other oxides and the product has the highest surface area of 24 m2/g, which has not been reported yet. It was confirmed by IR and TG analyses that the greater amount of citrate existed in the precursor dried by spray-freezing/freeze-drying than by evaporation drying, which contributed to the high surface area and well-crystallized phase of LaCoO3.

Original languageEnglish
Pages (from-to)463-468
Number of pages6
JournalStudies in Surface Science and Catalysis
Volume147
Publication statusPublished - 2004 Dec 9

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freeze drying
citrates
Freezing
freezing
sprayers
Drying
Citric Acid
Oxides
preparation
oxides
roasting
drying
evaporation
Perovskite
Calcination
Evaporation
products
temperature
Temperature

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Catalysis
  • Condensed Matter Physics
  • Materials Chemistry
  • Surfaces, Coatings and Films

Cite this

Preparation of LaCoO3 with high surface area for catalytic combustion by spray-freezing/freeze-drying method. / Lee, Seong Ho; Kim, Hak Ju; Nam, Jun Woo; Jung, Heon; Kang, Sung Kyu; Lee, Kwan Young.

In: Studies in Surface Science and Catalysis, Vol. 147, 09.12.2004, p. 463-468.

Research output: Contribution to journalArticle

Lee, Seong Ho ; Kim, Hak Ju ; Nam, Jun Woo ; Jung, Heon ; Kang, Sung Kyu ; Lee, Kwan Young. / Preparation of LaCoO3 with high surface area for catalytic combustion by spray-freezing/freeze-drying method. In: Studies in Surface Science and Catalysis. 2004 ; Vol. 147. pp. 463-468.
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