Dopant Effect of Barium Zirconate-Based Perovskite-Type Catalysts for the Intermediate-Temperature Reverse Water Gas Shift Reaction

Dae Han Kim; Jae Layng Park; Eun Ji Park; Young Dok Kim; Sunghyun Uhm

doi:10.1021/cs500476e

Dopant Effect of Barium Zirconate-Based Perovskite-Type Catalysts for the Intermediate-Temperature Reverse Water Gas Shift Reaction

Dae Han Kim
, Jae Layng Park
, Eun Ji Park
, Young Dok Kim
, Sunghyun Uhm

Department of Chemistry

Sungkyunkwan University
Institute for Advanced Engineering (IAE)

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

87 Scopus citations

Abstract

The reverse water gas shift (RWGS) reaction catalyzed by barium zirconate-based perovskite-type catalysts doped with Y, Zn, and Ce was investigated in terms of activities and chemical stabilities of various catalysts. All of the catalysts showed stable performances for the RWGS reaction at 600 °C for 5 h, and in particular, the BaZr_0.8Y_0.16Zn_0.04O₃ (BZYZ) catalyst showed an outstanding activity with an average CO₂ conversion of 37.5% and a CO selectivity of 97%. Insertion of additional Ce into the BZYZ structure did not have any positive effect on catalytic activity for the RWGS reaction, even though the ionic conductivity of BZYZ was improved by Ce insertion.

Original language	English
Pages (from-to)	3117-3122
Number of pages	6
Journal	ACS Catalysis
Volume	4
Issue number	9
DOIs	https://doi.org/10.1021/cs500476e
State	Published - 5 Sep 2014

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Keywords

barium zirconates
CO
dopant
perovskite
reverse water gas shift reaction

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10.1021/cs500476e

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title = "Dopant Effect of Barium Zirconate-Based Perovskite-Type Catalysts for the Intermediate-Temperature Reverse Water Gas Shift Reaction",

abstract = "The reverse water gas shift (RWGS) reaction catalyzed by barium zirconate-based perovskite-type catalysts doped with Y, Zn, and Ce was investigated in terms of activities and chemical stabilities of various catalysts. All of the catalysts showed stable performances for the RWGS reaction at 600 °C for 5 h, and in particular, the BaZr0.8Y0.16Zn0.04O3 (BZYZ) catalyst showed an outstanding activity with an average CO2 conversion of 37.5\% and a CO selectivity of 97\%. Insertion of additional Ce into the BZYZ structure did not have any positive effect on catalytic activity for the RWGS reaction, even though the ionic conductivity of BZYZ was improved by Ce insertion.",

keywords = "barium zirconates, CO, dopant, perovskite, reverse water gas shift reaction",

author = "Kim, \{Dae Han\} and Park, \{Jae Layng\} and Park, \{Eun Ji\} and Kim, \{Young Dok\} and Sunghyun Uhm",

note = "Publisher Copyright: {\textcopyright} 2014 American Chemical Society.",

year = "2014",

month = sep,

day = "5",

doi = "10.1021/cs500476e",

language = "English",

volume = "4",

pages = "3117--3122",

journal = "ACS Catalysis",

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TY - JOUR

T1 - Dopant Effect of Barium Zirconate-Based Perovskite-Type Catalysts for the Intermediate-Temperature Reverse Water Gas Shift Reaction

AU - Kim, Dae Han

AU - Park, Jae Layng

AU - Park, Eun Ji

AU - Kim, Young Dok

AU - Uhm, Sunghyun

PY - 2014/9/5

Y1 - 2014/9/5

N2 - The reverse water gas shift (RWGS) reaction catalyzed by barium zirconate-based perovskite-type catalysts doped with Y, Zn, and Ce was investigated in terms of activities and chemical stabilities of various catalysts. All of the catalysts showed stable performances for the RWGS reaction at 600 °C for 5 h, and in particular, the BaZr0.8Y0.16Zn0.04O3 (BZYZ) catalyst showed an outstanding activity with an average CO2 conversion of 37.5% and a CO selectivity of 97%. Insertion of additional Ce into the BZYZ structure did not have any positive effect on catalytic activity for the RWGS reaction, even though the ionic conductivity of BZYZ was improved by Ce insertion.

AB - The reverse water gas shift (RWGS) reaction catalyzed by barium zirconate-based perovskite-type catalysts doped with Y, Zn, and Ce was investigated in terms of activities and chemical stabilities of various catalysts. All of the catalysts showed stable performances for the RWGS reaction at 600 °C for 5 h, and in particular, the BaZr0.8Y0.16Zn0.04O3 (BZYZ) catalyst showed an outstanding activity with an average CO2 conversion of 37.5% and a CO selectivity of 97%. Insertion of additional Ce into the BZYZ structure did not have any positive effect on catalytic activity for the RWGS reaction, even though the ionic conductivity of BZYZ was improved by Ce insertion.

KW - barium zirconates

KW - CO

KW - dopant

KW - perovskite

KW - reverse water gas shift reaction

UR - https://www.scopus.com/pages/publications/84907731763

U2 - 10.1021/cs500476e

DO - 10.1021/cs500476e

M3 - Article

AN - SCOPUS:84907731763

SN - 2155-5435

VL - 4

SP - 3117

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JO - ACS Catalysis

JF - ACS Catalysis

IS - 9

ER -

Dopant Effect of Barium Zirconate-Based Perovskite-Type Catalysts for the Intermediate-Temperature Reverse Water Gas Shift Reaction

Abstract

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Keywords

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