Articles
  • Preparation and oxygen desorption performance modification of BaCoO3-δ perovskite-type materials via B-site cerium doping

  • Qiuwan Shena, Zicheng Shaoa, Yuhang Jianga, Shian Lia,*, Guogang Yanga, Naibao Huangb, and Xinxiang Pana

  • aMarine Engineering College, Dalian Maritime University, Dalian, China
    bCollege of Transportation Engineering, Dalian Maritime University, Dalian, China

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The oxyfuel combustion process is used as a potential technique to CO2 capture and the oxygen carries play a crucial role of this technology. Ba-Co based perovskites are promising materials to producing O2/CO2 gas for oxyfuel combustion. In this study, perovskite oxides BaCo0.8M0.2O3-δ (M = Ce, Al, Fe, Cu) were prepared via an EDTA sol-gel method. Scanning electron microscope (SEM) was used to study the surface morphology and structure of the fresh and the used perovskite powders. Oxygen adsorption/desorption experiments were carried out in a fixed-bed system; and the oxygen desorption property of BaCo0.8Ce0.2O3-δ was studied in details. The oxygen production amount of 1g BaCo0.8Ce0.2O3-δ perovskite powders can reach 101.07 mg after one adsorption and desorption cycle. SEM results showed that the fresh samples had a porous structure; however the particles were covered by impurities after cycles due to the sintering. Experiments results indicated that the optimal desorption temperature is 850oC. The optimal volume flow rate of carbon dioxide and partial pressures of carbon dioxide were determined to be 200 ml·min-1, 100% CO2 partial pressure, respectively. Furthermore, the results of cyclic performance indicate that BaCo0.8Ce0.2O3-δ perovskite powder shows high cyclic stability for producing O2-enriched CO2 stream


Keywords: Oxyfuel combustion, CO2 capture, oxygen desorption, doping

This Article

  • 2021; 22(5): 576-583

    Published on Oct 31, 2021

  • 10.36410/jcpr.2021.22.5.576
  • Received on Apr 18, 2021
  • Revised on Jul 4, 2021
  • Accepted on Jul 17, 2021

Correspondence to

  • Shian Li

  • Marine Engineering College, Dalian Maritime University, Dalian, China
    Tel : +86-13190160896 Fax: +0411-84728659

  • E-mail: lishian@dlmu.edu.cn