Functional LSM-ScSZ/NiO-ScSZ dual-layer hollow fibres for partial oxidation of methane

Zhentao Wu, Bo Wang, Kang Li*

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

In this study, a functional La0.80Sr0.20MnO 3-δ (LSM)-Scandia-Stabilized-Zirconia (ScSZ)/NiO-ScSZ dual-layer hollow fibre has been developed using a single-step co-extrusion and co-sintering process, and has been employed as a dual-layer hollow fibre membrane reactor for partial oxidation of methane. Oxygen permeation rate between 0.49 and 1.82 ml/min and methane conversion between 53.55% and 98.78% have been achieved when operating temperature is elevated from 920 to 1060 °C, together with a significant reduction in coke-deposition. Oxygen permeation through the outer LSM-ScSZ permeation layer (approximately 109.2 μm in thickness) is found to be the controlling step to methane conversion at the operating temperature below 990 °C, above which the excessive oxygen permeation results in formation of CO2 and H2O as by-products. The experimental results further suggest that the amount of NiO in the inner NiO-ScSZ layer should be optimised based on the factors such as catalytic activity/stability, porosity and mechanical strength in addition to the sintering behaviour which has to be matched to the outer LSM-ScSZ layer.

Original languageEnglish
Pages (from-to)5334-5341
Number of pages8
JournalInternational Journal of Hydrogen Energy
Volume36
Issue number9
DOIs
Publication statusPublished - 1 May 2011

Fingerprint

Scandium
scandium
zirconium oxides
Zirconia
hollow
Methane
methane
Permeation
Oxidation
oxidation
fibers
Fibers
operating temperature
Oxygen
sintering
oxygen
Sintering
coke
Coke
Strength of materials

Keywords

  • Co-extrusion and co-sintering
  • Dual-layer hollow fibre
  • Membrane reactor
  • Methane conversion

Cite this

@article{b326107ac08c49b7bbfe29228bc8ddc6,
title = "Functional LSM-ScSZ/NiO-ScSZ dual-layer hollow fibres for partial oxidation of methane",
abstract = "In this study, a functional La0.80Sr0.20MnO 3-δ (LSM)-Scandia-Stabilized-Zirconia (ScSZ)/NiO-ScSZ dual-layer hollow fibre has been developed using a single-step co-extrusion and co-sintering process, and has been employed as a dual-layer hollow fibre membrane reactor for partial oxidation of methane. Oxygen permeation rate between 0.49 and 1.82 ml/min and methane conversion between 53.55{\%} and 98.78{\%} have been achieved when operating temperature is elevated from 920 to 1060 °C, together with a significant reduction in coke-deposition. Oxygen permeation through the outer LSM-ScSZ permeation layer (approximately 109.2 μm in thickness) is found to be the controlling step to methane conversion at the operating temperature below 990 °C, above which the excessive oxygen permeation results in formation of CO2 and H2O as by-products. The experimental results further suggest that the amount of NiO in the inner NiO-ScSZ layer should be optimised based on the factors such as catalytic activity/stability, porosity and mechanical strength in addition to the sintering behaviour which has to be matched to the outer LSM-ScSZ layer.",
keywords = "Co-extrusion and co-sintering, Dual-layer hollow fibre, Membrane reactor, Methane conversion",
author = "Zhentao Wu and Bo Wang and Kang Li",
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language = "English",
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Functional LSM-ScSZ/NiO-ScSZ dual-layer hollow fibres for partial oxidation of methane. / Wu, Zhentao; Wang, Bo; Li, Kang.

In: International Journal of Hydrogen Energy, Vol. 36, No. 9, 01.05.2011, p. 5334-5341.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Functional LSM-ScSZ/NiO-ScSZ dual-layer hollow fibres for partial oxidation of methane

AU - Wu, Zhentao

AU - Wang, Bo

AU - Li, Kang

PY - 2011/5/1

Y1 - 2011/5/1

N2 - In this study, a functional La0.80Sr0.20MnO 3-δ (LSM)-Scandia-Stabilized-Zirconia (ScSZ)/NiO-ScSZ dual-layer hollow fibre has been developed using a single-step co-extrusion and co-sintering process, and has been employed as a dual-layer hollow fibre membrane reactor for partial oxidation of methane. Oxygen permeation rate between 0.49 and 1.82 ml/min and methane conversion between 53.55% and 98.78% have been achieved when operating temperature is elevated from 920 to 1060 °C, together with a significant reduction in coke-deposition. Oxygen permeation through the outer LSM-ScSZ permeation layer (approximately 109.2 μm in thickness) is found to be the controlling step to methane conversion at the operating temperature below 990 °C, above which the excessive oxygen permeation results in formation of CO2 and H2O as by-products. The experimental results further suggest that the amount of NiO in the inner NiO-ScSZ layer should be optimised based on the factors such as catalytic activity/stability, porosity and mechanical strength in addition to the sintering behaviour which has to be matched to the outer LSM-ScSZ layer.

AB - In this study, a functional La0.80Sr0.20MnO 3-δ (LSM)-Scandia-Stabilized-Zirconia (ScSZ)/NiO-ScSZ dual-layer hollow fibre has been developed using a single-step co-extrusion and co-sintering process, and has been employed as a dual-layer hollow fibre membrane reactor for partial oxidation of methane. Oxygen permeation rate between 0.49 and 1.82 ml/min and methane conversion between 53.55% and 98.78% have been achieved when operating temperature is elevated from 920 to 1060 °C, together with a significant reduction in coke-deposition. Oxygen permeation through the outer LSM-ScSZ permeation layer (approximately 109.2 μm in thickness) is found to be the controlling step to methane conversion at the operating temperature below 990 °C, above which the excessive oxygen permeation results in formation of CO2 and H2O as by-products. The experimental results further suggest that the amount of NiO in the inner NiO-ScSZ layer should be optimised based on the factors such as catalytic activity/stability, porosity and mechanical strength in addition to the sintering behaviour which has to be matched to the outer LSM-ScSZ layer.

KW - Co-extrusion and co-sintering

KW - Dual-layer hollow fibre

KW - Membrane reactor

KW - Methane conversion

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