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

doi:10.1016/s0167-2991(04)80095-8

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

Department of Chemical and Biological Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

7 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 language	English
Title of host publication	Studies in Surface Science and Catalysis
Publisher	Elsevier Inc.
Pages	463-468
Number of pages	6
ISBN (Print)	9780444515995
DOIs	https://doi.org/10.1016/s0167-2991(04)80095-8
Publication status	Published - 2004

Publication series

Name	Studies in Surface Science and Catalysis
Volume	147
ISSN (Print)	0167-2991

ASJC Scopus subject areas

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

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10.1016/s0167-2991(04)80095-8

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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.

Studies in Surface Science and Catalysis. Elsevier Inc., 2004. p. 463-468 (Studies in Surface Science and Catalysis; Vol. 147).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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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.",

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AB - 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.

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