TY - GEN A1 - González-Arias, Judith A1 - González-Castaño, Miriam A1 - Sánchez, Marta Elena A1 - Cara-Jiménez, Jorge A1 - Arellano-Garcia, Harvey T1 - Valorization of biomass-derived CO2 residues with Cu-MnOx catalysts for RWGS reaction T2 - Renewable Energy N2 - This study delivers useful understanding towards the design of effective catalytic systems for upgrading real CO2erich residual streams derived from biomass valorization. Within this perspective, a catalysts' series based on (5 wt%) Cu - (X wt%) Mn/Al2O3with X¼0, 3, 8, and 10 is employed. The improved catalyst performance achieved through Mn incorporation is ascribed to enhanced Cu dispersions and promoted surface basic concentrations. Under standard RWGS conditions, the highest reaction rates achieved by(5 wt%) Cu - (8 wt%) Mn/Al2O3catalyst were associated to improved Cu dispersions along with the constitution of highly active Cu-MnOxdomains. Remarkably, variations on the optimal Cu to Mn ratios were detected as a function of the RWGS reaction conditions. Thus, under simulated CO2-rich residual feedstock's, i.e., in presence of CO and CH4, the further promotion on the Cu dispersion attained by the larger amounts of MnOxrendered the (5 wt%) Cu - (10 wt%) Mn/Al2O3catalyst as the best performing sample. Overall, the presented outcomes underline operative strategies for developing catalytic systems with advanced implementation potentialities. KW - CO2 waste valorization KW - CO2-Rich residues KW - Reverse water gas shift KW - CO2 reduction KW - Cu-catalysts KW - Manganese oxide Y1 - 2021 UR - https://opus4.kobv.de/opus4-UBICO/frontdoor/index/index/docId/27815 SN - 1879-0682 IS - 182 SP - 443 EP - 451 ER -