Performance of Perovskite‐Type Oxides as Oxygen‐Carrier Materials for Chemical Looping Combustion in the Presence of H 2 S

In this study, the redox behavior and the effect of the presence of sulfur on the performance of the CaTi x Mn 0.9− x Mg 0.1 O 3 perovskite‐type system were investigated. A detailed thermodynamic and thermogravimetric approach combined with post‐characterization was utilized. Ti doping positively in...

Full description

Saved in:
Bibliographic Details
Published in:Energy technology (Weinheim, Germany) Germany), 2016-10, Vol.4 (10), p.1305-1316
Main Authors: Pishahang, Mehdi, Larring, Yngve, Sunding, Martin, Jacobs, Marijke, Snijkers, Frans
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this study, the redox behavior and the effect of the presence of sulfur on the performance of the CaTi x Mn 0.9− x Mg 0.1 O 3 perovskite‐type system were investigated. A detailed thermodynamic and thermogravimetric approach combined with post‐characterization was utilized. Ti doping positively influenced the reduction reaction rate and broadened the operation window of the oxygen carrier material (OCM) to lower temperatures. Although sulfur accumulation during the chemical looping with oxygen uncoupling conditions was thermodynamically inevitable owing to sulfate formation, deep redox cycles were shown to remove the accumulated sulfur from the OCM after the sour cycles. Post‐characterization by scanning electron microscopy and sulfur mapping confirmed the effectiveness of this treatment.
ISSN:2194-4288
2194-4296
DOI:10.1002/ente.201600177