A CO₂-stable reduction-tolerant Nd-containing dual phase membrane for oxyfuel CO₂ capture

authored by

Huixia Luo, Tobias Klande, Zhengwen Cao, Fangyi Liang, Haihui Wang, Jürgen Caro

Abstract

We report a novel CO₂-stable reduction-tolerant dual-phase oxygen transport membrane 40 wt% Nd_0.6Sr_0.4FeO _3-δ-60 wt% Ce_0.9Nd_0.1O _2-δ (40NSFO-60CNO), which was successfully developed by a facile one-pot EDTA-citric sol-gel method. The microstructure of the crystalline 40NSFO-60CNO phase was investigated by combined in situ X-ray diffraction (XRD), scanning electron microscopy (SEM), back scattered SEM (BSEM), and energy dispersive X-ray spectroscopy (EDXS) analyses. Oxygen permeation and long-time stability under CO₂ and CH₄ atmospheres were investigated. A stable oxygen flux of 0.21 cm³ min^-1 cm^-2 at 950 °C with undiluted CO₂ as sweep gas is found which is increased to 0.48 cm³ min^-1 cm^-2 if the air side is coated with a porous La_0.6Sr_0.4CoO _3-δ (LSC) layer. All the experimental results demonstrate that the 40NSFO-60CNO not only shows good reversibility of the oxygen permeation fluxes upon temperature cycling, but also good phase stability in a CO ₂ atmosphere and under the harsh conditions of partial oxidation of methane to synthesis gas up to 950 °C. This journal is

Organisation(s)

Institute of Physical Chemistry and Electrochemistry

External Organisation(s)

Princeton University
South China University of Technology

Type

Article

Journal

Journal of Materials Chemistry A

Volume

2

Pages

7780-7787

No. of pages

8

ISSN

2050-7488

Publication date

2014

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

General Chemistry, Renewable Energy, Sustainability and the Environment, General Materials Science

Sustainable Development Goals

SDG 7 - Affordable and Clean Energy

Electronic version(s)

https://doi.org/10.1039/c3ta14870j (Access: Closed)