Hydration, CO2 stability and wireless electrochemical promotion studies on yttria-doped Ba (Ce, Zr) O3 perovskites

Efstratios Stavrakakis, Matthew West, Stephen Johnston, Ronan McIllwaine, Danai Poulidi

Research output: Contribution to journalArticle

105 Downloads (Pure)

Abstract

BaCe1 − xYxO3 − δ (BCY) and BaCe0.8 − yZryY0.2O3 − δ (BCZY) perovskite mixed metal oxides were synthesised by an aqueous sol-gel technique to be investigated for their suitability in intermediate-temperature catalytic applications such as Electrochemical Promotion of Catalysis. The hydration capacity and the stability under CO2 environments of the samples were studied using thermogravimetric analysis. Based on the evaluation of these properties, BaCe0.6Zr0.2Y0.2O3 − δ (BCZ20Y20) was selected as the membrane support for wireless Electrochemical Promotion for CO oxidation on Pt. In a dual-chamber reactor, the use of H2/H2O flow in the sweep side induced promoting species supply to the catalyst in the reaction side of the reactor. Moderate promotion of the catalytic rate up to 10% was observed for temperatures up to 650 °C, while this promotional effect was reversible and repeatable. The encouraging preliminary catalytic experiments together with the membrane’s stability under the applied conditions reinforce the candidacy of BCZY membranes for intermediate-temperature applications in catalytic membrane reactors.
Original languageEnglish
JournalIonics
DOIs
Publication statusPublished - 24 Jan 2019

Fingerprint

Yttrium oxide
promotion
perovskites
Hydration
hydration
membranes
Membranes
reactors
mixed oxides
Carbon Monoxide
Perovskite
Temperature
Oxides
Catalysis
catalysis
Sol-gels
temperature
metal oxides
Thermogravimetric analysis
chambers

Cite this

Stavrakakis, Efstratios ; West, Matthew ; Johnston, Stephen ; McIllwaine, Ronan ; Poulidi, Danai. / Hydration, CO2 stability and wireless electrochemical promotion studies on yttria-doped Ba (Ce, Zr) O3 perovskites. In: Ionics. 2019.
@article{0d55c35d84c34c77a12ebf4673ef93f6,
title = "Hydration, CO2 stability and wireless electrochemical promotion studies on yttria-doped Ba (Ce, Zr) O3 perovskites",
abstract = "BaCe1 − xYxO3 − δ (BCY) and BaCe0.8 − yZryY0.2O3 − δ (BCZY) perovskite mixed metal oxides were synthesised by an aqueous sol-gel technique to be investigated for their suitability in intermediate-temperature catalytic applications such as Electrochemical Promotion of Catalysis. The hydration capacity and the stability under CO2 environments of the samples were studied using thermogravimetric analysis. Based on the evaluation of these properties, BaCe0.6Zr0.2Y0.2O3 − δ (BCZ20Y20) was selected as the membrane support for wireless Electrochemical Promotion for CO oxidation on Pt. In a dual-chamber reactor, the use of H2/H2O flow in the sweep side induced promoting species supply to the catalyst in the reaction side of the reactor. Moderate promotion of the catalytic rate up to 10{\%} was observed for temperatures up to 650 °C, while this promotional effect was reversible and repeatable. The encouraging preliminary catalytic experiments together with the membrane’s stability under the applied conditions reinforce the candidacy of BCZY membranes for intermediate-temperature applications in catalytic membrane reactors.",
author = "Efstratios Stavrakakis and Matthew West and Stephen Johnston and Ronan McIllwaine and Danai Poulidi",
year = "2019",
month = "1",
day = "24",
doi = "10.1007/s11581-019-02836-6",
language = "English",
journal = "Ionics",
issn = "0947-7047",
publisher = "Institute for Ionics",

}

Hydration, CO2 stability and wireless electrochemical promotion studies on yttria-doped Ba (Ce, Zr) O3 perovskites. / Stavrakakis, Efstratios; West, Matthew; Johnston, Stephen; McIllwaine, Ronan; Poulidi, Danai.

In: Ionics, 24.01.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Hydration, CO2 stability and wireless electrochemical promotion studies on yttria-doped Ba (Ce, Zr) O3 perovskites

AU - Stavrakakis, Efstratios

AU - West, Matthew

AU - Johnston, Stephen

AU - McIllwaine, Ronan

AU - Poulidi, Danai

PY - 2019/1/24

Y1 - 2019/1/24

N2 - BaCe1 − xYxO3 − δ (BCY) and BaCe0.8 − yZryY0.2O3 − δ (BCZY) perovskite mixed metal oxides were synthesised by an aqueous sol-gel technique to be investigated for their suitability in intermediate-temperature catalytic applications such as Electrochemical Promotion of Catalysis. The hydration capacity and the stability under CO2 environments of the samples were studied using thermogravimetric analysis. Based on the evaluation of these properties, BaCe0.6Zr0.2Y0.2O3 − δ (BCZ20Y20) was selected as the membrane support for wireless Electrochemical Promotion for CO oxidation on Pt. In a dual-chamber reactor, the use of H2/H2O flow in the sweep side induced promoting species supply to the catalyst in the reaction side of the reactor. Moderate promotion of the catalytic rate up to 10% was observed for temperatures up to 650 °C, while this promotional effect was reversible and repeatable. The encouraging preliminary catalytic experiments together with the membrane’s stability under the applied conditions reinforce the candidacy of BCZY membranes for intermediate-temperature applications in catalytic membrane reactors.

AB - BaCe1 − xYxO3 − δ (BCY) and BaCe0.8 − yZryY0.2O3 − δ (BCZY) perovskite mixed metal oxides were synthesised by an aqueous sol-gel technique to be investigated for their suitability in intermediate-temperature catalytic applications such as Electrochemical Promotion of Catalysis. The hydration capacity and the stability under CO2 environments of the samples were studied using thermogravimetric analysis. Based on the evaluation of these properties, BaCe0.6Zr0.2Y0.2O3 − δ (BCZ20Y20) was selected as the membrane support for wireless Electrochemical Promotion for CO oxidation on Pt. In a dual-chamber reactor, the use of H2/H2O flow in the sweep side induced promoting species supply to the catalyst in the reaction side of the reactor. Moderate promotion of the catalytic rate up to 10% was observed for temperatures up to 650 °C, while this promotional effect was reversible and repeatable. The encouraging preliminary catalytic experiments together with the membrane’s stability under the applied conditions reinforce the candidacy of BCZY membranes for intermediate-temperature applications in catalytic membrane reactors.

U2 - 10.1007/s11581-019-02836-6

DO - 10.1007/s11581-019-02836-6

M3 - Article

JO - Ionics

JF - Ionics

SN - 0947-7047

ER -