Abstract
An oxygen transport membrane made from La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3 − δ (LSCF6428) has been tested for air separation by oxygen permeation at 900 °C with the introduction of sulfur in the form of hydrogen sulfide. 200 ppm of hydrogen sulfide was fed either in the sweep-side (argon-side) or the air-side. The membrane was exposed to hydrogen sulfide for 100 h. Results show that the presence of hydrogen sulfide negatively influenced the oxygen permeation due to the formation of strontium sulfate blocking the oxygen permeation pathway. When the hydrogen sulfide was removed from the system, the oxygen permeation was partially restored in the case of argon-side contamination, while being fully restored in the case of air-side contamination. • Sulfur was introduced to an LSCF6428 membrane in the form of hydrogen sulfide. • Hydrogen sulfide was fed either in the argon-side or the air-side. • Oxygen permeation sharply decreased during hydrogen sulfide introduction. • Segregation of strontium to the air-side increased strontium sulfate formation. • In case of argon-side contamination, the oxygen permeation could not be restored. • In case of air-side contamination, the oxygen permeation was fully restored.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
