Optimization of a highly active nano-sized Pt/CeO2 catalyst via Ce(OH)CO3 for the water-gas shift reaction

Dae Woon Jeong, Won Jun Jang, Jae Oh Shim, Won Bi Han, Hak Min Kim, Yeol Lim Lee, Jong Wook Bae, Hyunseog Roh

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Crystalline cerium hydroxy carbonate (CHC: Ce(OH)CO3) was prepared by a novel precipitation/digestion method at room temperature in air. The nano-sized CeO2 supports were obtained by the thermal decomposition of CHC and the Pt/CeO2 catalysts were prepared by an incipient wetness impregnation method. The pre-calcination temperature and aging time were optimized to obtain a highly active Pt/CeO2 catalyst for the water gas shift reaction (WGS). The Pt/CeO2 catalyst exhibited the highest CO conversion (82%) and the lowest activation energy (55kJ/mol) at a very high gas hourly space velocity (GHSV) of 45,515h-1 when the optimized synthesis parameter (pre-calcined temperature=400°C and aging time=4h) was used in the synthesis of CeO2. This is mainly due to the high BET surface area, nano-sized CeO2, and intimate interaction between Pt and CeO2.

Original languageEnglish
Pages (from-to)78-84
Number of pages7
JournalRenewable Energy
Volume79
Issue number1
DOIs
Publication statusPublished - 2015 Jan 1

Fingerprint

Water gas shift
Catalysts
Aging of materials
Cerium
Impregnation
Calcination
Temperature
Carbonates
Pyrolysis
Activation energy
Crystalline materials
Air
Gases

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment

Cite this

Jeong, Dae Woon ; Jang, Won Jun ; Shim, Jae Oh ; Han, Won Bi ; Kim, Hak Min ; Lee, Yeol Lim ; Bae, Jong Wook ; Roh, Hyunseog. / Optimization of a highly active nano-sized Pt/CeO2 catalyst via Ce(OH)CO3 for the water-gas shift reaction. In: Renewable Energy. 2015 ; Vol. 79, No. 1. pp. 78-84.
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Optimization of a highly active nano-sized Pt/CeO2 catalyst via Ce(OH)CO3 for the water-gas shift reaction. / Jeong, Dae Woon; Jang, Won Jun; Shim, Jae Oh; Han, Won Bi; Kim, Hak Min; Lee, Yeol Lim; Bae, Jong Wook; Roh, Hyunseog.

In: Renewable Energy, Vol. 79, No. 1, 01.01.2015, p. 78-84.

Research output: Contribution to journalArticle

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AU - Jeong, Dae Woon

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AU - Han, Won Bi

AU - Kim, Hak Min

AU - Lee, Yeol Lim

AU - Bae, Jong Wook

AU - Roh, Hyunseog

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