Mixed Oxides of Iron and Manganese as Potential Low‐Cost Oxygen Carriers for Chemical Looping Combustion. Issue 8 (17th June 2015)

• Record Type: Journal Article
• Authors: Mungse, Pallavi; Saravanan, Govindachetty; Rayalu, Sadhana; Labhsetwar, Nitin
• Is Part Of: Energy technology. Volume 3:Issue 8(2015:Aug.)
• Page Start: 856
• Page End: 865
• Publication Date: 2015-06-17
• Subjects: Energy development -- Periodicals; Power resources -- Periodicals; 333.79
• DOI: 10.1002/ente.201500035
• Languages: English
• ISSNs: 2194-4288

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Low‐cost oxygen carriers with multicycle chemical looping combustion (CLC) performance and CO₂ selectivity have been explored to realize a practical oxygen carrier to obtain sequestration‐ready CO₂ from the combustion processes. The cubic structures of the pure mixed oxides of Fe and Mn (Fe₃Mn₃O₈ and FeMnO₃; Fe–Mn–O) were prepared successfully as oxygen carriers through a coprecipitation method. The Fe–Mn–O systems showed 100 % CH₄ combustion performance in the absence of air or oxygen. MnO and Fe₃O₄ are the reduced products of the Fe–Mn–O systems after the CH₄ combustion reaction. The regeneration of the Fe–Mn–O phase was achieved readily by reoxidation of their reduced products in air. The Fe–Mn–O systems showed a stable and multicycle CLC performance, however, the individual oxides of Fe and Mn showed an inferior CLC performance. Pure CO₂ was formed during the CH₄ combustion reaction of the Fe–Mn–O systems with practically no toxic CO byproduct. Therefore, the mixed oxide phase of Fe and Mn shows potential as a practical oxygen carrier in terms of its multicycle CLC performance and CO₂ selectivity.</p> </abstract>