Search

Chemical looping gasification (CLG) is a promising technology for syngas production with low pollutant emission. In this study, doped La-Fe-O perovskites including LaFeO 3 (LF), LaFe 0.5 Ni 0.5 O 3 (LN5F5) and La 0.3 Ba 0.7 FeO 3 (L3B7F) were developed for microalgae CLG. The as-prepared perovskites exhibited an outstanding performance in syngas production with accumulative syngas yield > 33 mol/kg. For gas-N evolution, perovskites were beneficial to the formation of NH 3 and HCN, while the iron ore may convert precursors to NO. Below 400 °C, NO x can be stored on the perovskite surface in the form of nitrite/nitrate species. When the temperature was above 700 °C, NO x can be selectively reduced by reducing components in tar or syngas under the catalysis of L3B7F, resulting in the final reduction of NO x emission. Thus, CLG over L3B7F may be a promising way for efficient utilization of microalgae to overcome the intractable nitrogen-related obstacles in the commercial application of biomass gasification technologies., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2022 Elsevier Ltd. All rights reserved.)