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

Department of Chemical Engineering

Yonsei University Mirae Campus

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

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
State	Published - 2015

Keywords

Aging time
Cerium hydroxy carbonate (CHC: Ce(OH)CO)
Nano-sized CeO
Pre-calcination temperature
Pt
Water gas shift (WGS)

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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.",

keywords = "Aging time, Cerium hydroxy carbonate (CHC: Ce(OH)CO), Nano-sized CeO, Pre-calcination temperature, Pt, Water gas shift (WGS)",

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\}",

note = "Publisher Copyright: {\textcopyright} 2014 Elsevier Ltd.",

year = "2015",

doi = "10.1016/j.renene.2014.07.041",

language = "English",

volume = "79",

pages = "78--84",

journal = "Renewable Energy",

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T1 - Optimization of a highly active nano-sized Pt/CeO2 catalyst via Ce(OH)CO3 for the water-gas shift reaction

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

Y1 - 2015

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.

KW - Aging time

KW - Cerium hydroxy carbonate (CHC: Ce(OH)CO)

KW - Nano-sized CeO

KW - Pre-calcination temperature

KW - Pt

KW - Water gas shift (WGS)

UR - https://www.scopus.com/pages/publications/84933517545

U2 - 10.1016/j.renene.2014.07.041

DO - 10.1016/j.renene.2014.07.041

M3 - Article

AN - SCOPUS:84933517545

SN - 0960-1481

VL - 79

SP - 78

EP - 84

JO - Renewable Energy

JF - Renewable Energy

IS - 1

ER -

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

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Keywords

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