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; Hyun Seog Roh

doi:10.1016/j.renene.2014.07.041

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, Hyun Seog Roh

Division of Environmental Engineering

Research output: Contribution to journal › Article

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 language	English
Pages (from-to)	78-84
Number of pages	7
Journal	Renewable Energy
Volume	79
Issue number	1
DOIs	https://doi.org/10.1016/j.renene.2014.07.041
Publication status	Published - 2015 Jan 1

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment

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Jeong, D. W., Jang, W. J., Shim, J. O., Han, W. B., Kim, H. M., Lee, Y. L., Bae, J. W., & Roh, H. S. (2015). Optimization of a highly active nano-sized Pt/CeO₂ catalyst via Ce(OH)CO₃ for the water-gas shift reaction. Renewable Energy, 79(1), 78-84. https://doi.org/10.1016/j.renene.2014.07.041

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

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.",

author = "Jeong, {Dae Woon} and Jang, {Won Jun} and Shim, {Jae Oh} and Han, {Won Bi} and Kim, {Hak Min} and Lee, {Yeol Lim} and Bae, {Jong Wook} and Roh, {Hyun Seog}",

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AU - Jeong, Dae Woon

AU - Jang, Won Jun

AU - Shim, Jae Oh

AU - Han, Won Bi

AU - Kim, Hak Min

AU - Lee, Yeol Lim

AU - Bae, Jong Wook

AU - Roh, Hyun Seog

PY - 2015/1/1

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N2 - 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.

AB - 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.

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