Selective CO2 deoxygenation to CO in chemically looped reverse water–gas shift using iron-based oxygen carrier

نویسندگان

چکیده

Chemical-looped reverse water–gas shift reaction was investigated using transition metal/metal oxides as oxygen carriers. Iron is identified the only promising carrier that shows compelling CO 2 splitting reactivity. A chemically looped developed an iron-based carrier. Compared with conventional catalytic conversion processes, chemical looping method has advantage of high selectivity and cheap materials cost due to separation CO2 H2 oxidation half-reactions are enabled by earth-abundant metal However, for such process be economically attractive, operation temperature should ideally low enough low-grade industrial waste heat can utilized. In other words, reactivity carriers toward aforementioned most critical. To address challenge, four metal-based carriers, i.e., iron, nickel, manganese, copper, studied temperature-programmed techniques under CO2. reactive capable completing redox cycle at 450 °C 100% selectivity. Although thermal stability iron room improvement, our work demonstrates great potential a scalable viable route compatible current processes.

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ژورنال

عنوان ژورنال: MRS energy & sustainability

سال: 2022

ISSN: ['2329-2229', '2329-2237']

DOI: https://doi.org/10.1557/s43581-022-00039-7