Abstract
Chemical looping is a promising way to produce hydrogen due to the inherent purification feature and CO2 capture. Operating oxygen carrier at high reduction degree is desirable because it can improve hydrogen production yield and reduce solid flux rate in a fluidized bed chemical looping reactor. However, the high reduction degree generally has a negative effect on cyclic stability, necessitating the trade-off between the hydrogen production reactivity and stability. In this article, we prepared a new Zn-Fe-Al mixed spinel as the oxygen carrier showing both the high reactivity and stability. It has the nearly 100% fuel conversion and stable hydrogen yield of ~2.23 mmol/g, which is about two times higher than that of Fe2O3 material. The mechanism study indicates that the high cyclic performance is due to the embedded interface structure induced by the reversible resolution of Fe active component in the spinel solution. This work provides a new design scheme of oxygen carrier for other chemical looping applications.
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.
