A crucial role for the CeO2-ZrO2 support for the low temperature water gas shift reaction over Cu-CeO2-ZrO2 catalysts

Dae Woon Jeong; Hyun Suk Na; Jae Oh Shim; Won Jun Jang; Hyun Seog Roh

doi:10.1039/c5cy00499c

A crucial role for the CeO₂-ZrO₂ support for the low temperature water gas shift reaction over Cu-CeO₂-ZrO₂ catalysts

Dae Woon Jeong, Hyun Suk Na, Jae Oh Shim, Won Jun Jang, Hyun Seog Roh

Division of Environmental Engineering

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

71 Citations (Scopus)

Abstract

A co-precipitation method was employed to prepare Cu dispersed on CeO₂, ZrO₂ and CeO₂-ZrO₂ supports to obtain catalysts useful for the low temperature water gas shift (WGS) reaction. To optimize the Cu-CeO₂-ZrO₂ catalysts, the CeO₂/ZrO₂ ratio was systematically changed. The cubic phase Cu-Ce_0.8Zr_0.2O₂ catalyst exhibited the highest turnover frequency and the lowest activation energy among the catalysts tested and its CO conversion was maintained without significant loss during the reaction for 100 h. The enhanced catalytic activity and stability of the co-precipitated Cu-Ce_0.8Zr_0.2O₂ was mainly attributed to an enhanced oxygen mobility and a strong resistance against the sintering of Cu, resulting from a large amount of defect oxygen and the strong interaction between CuO and cubic phase Ce_0.8Zr_0.2O₂.

Original language	English
Pages (from-to)	3706-3713
Number of pages	8
Journal	Catalysis Science and Technology
Volume	5
Issue number	7
DOIs	https://doi.org/10.1039/c5cy00499c
Publication status	Published - 2015 Jul 1

Bibliographical note

Publisher Copyright:
© The Royal Society of Chemistry 2015.

All Science Journal Classification (ASJC) codes

Catalysis

Access to Document

10.1039/c5cy00499c

Cite this

@article{28faff2a856344d5b717fb32dc7d88a6,

title = "A crucial role for the CeO2-ZrO2 support for the low temperature water gas shift reaction over Cu-CeO2-ZrO2 catalysts",

abstract = "A co-precipitation method was employed to prepare Cu dispersed on CeO2, ZrO2 and CeO2-ZrO2 supports to obtain catalysts useful for the low temperature water gas shift (WGS) reaction. To optimize the Cu-CeO2-ZrO2 catalysts, the CeO2/ZrO2 ratio was systematically changed. The cubic phase Cu-Ce0.8Zr0.2O2 catalyst exhibited the highest turnover frequency and the lowest activation energy among the catalysts tested and its CO conversion was maintained without significant loss during the reaction for 100 h. The enhanced catalytic activity and stability of the co-precipitated Cu-Ce0.8Zr0.2O2 was mainly attributed to an enhanced oxygen mobility and a strong resistance against the sintering of Cu, resulting from a large amount of defect oxygen and the strong interaction between CuO and cubic phase Ce0.8Zr0.2O2.",

author = "Jeong, {Dae Woon} and Na, {Hyun Suk} and Shim, {Jae Oh} and Jang, {Won Jun} and Roh, {Hyun Seog}",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2015.",

year = "2015",

month = jul,

day = "1",

doi = "10.1039/c5cy00499c",

language = "English",

volume = "5",

pages = "3706--3713",

journal = "Catalysis Science and Technology",

issn = "2044-4753",

publisher = "Royal Society of Chemistry",

number = "7",

}

TY - JOUR

T1 - A crucial role for the CeO2-ZrO2 support for the low temperature water gas shift reaction over Cu-CeO2-ZrO2 catalysts

AU - Jeong, Dae Woon

AU - Na, Hyun Suk

AU - Shim, Jae Oh

AU - Jang, Won Jun

AU - Roh, Hyun Seog

PY - 2015/7/1

Y1 - 2015/7/1

N2 - A co-precipitation method was employed to prepare Cu dispersed on CeO2, ZrO2 and CeO2-ZrO2 supports to obtain catalysts useful for the low temperature water gas shift (WGS) reaction. To optimize the Cu-CeO2-ZrO2 catalysts, the CeO2/ZrO2 ratio was systematically changed. The cubic phase Cu-Ce0.8Zr0.2O2 catalyst exhibited the highest turnover frequency and the lowest activation energy among the catalysts tested and its CO conversion was maintained without significant loss during the reaction for 100 h. The enhanced catalytic activity and stability of the co-precipitated Cu-Ce0.8Zr0.2O2 was mainly attributed to an enhanced oxygen mobility and a strong resistance against the sintering of Cu, resulting from a large amount of defect oxygen and the strong interaction between CuO and cubic phase Ce0.8Zr0.2O2.

AB - A co-precipitation method was employed to prepare Cu dispersed on CeO2, ZrO2 and CeO2-ZrO2 supports to obtain catalysts useful for the low temperature water gas shift (WGS) reaction. To optimize the Cu-CeO2-ZrO2 catalysts, the CeO2/ZrO2 ratio was systematically changed. The cubic phase Cu-Ce0.8Zr0.2O2 catalyst exhibited the highest turnover frequency and the lowest activation energy among the catalysts tested and its CO conversion was maintained without significant loss during the reaction for 100 h. The enhanced catalytic activity and stability of the co-precipitated Cu-Ce0.8Zr0.2O2 was mainly attributed to an enhanced oxygen mobility and a strong resistance against the sintering of Cu, resulting from a large amount of defect oxygen and the strong interaction between CuO and cubic phase Ce0.8Zr0.2O2.

UR - http://www.scopus.com/inward/record.url?scp=84949117629&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84949117629&partnerID=8YFLogxK

U2 - 10.1039/c5cy00499c

DO - 10.1039/c5cy00499c

M3 - Article

AN - SCOPUS:84949117629

SN - 2044-4753

VL - 5

SP - 3706

EP - 3713

JO - Catalysis Science and Technology

JF - Catalysis Science and Technology

IS - 7

ER -