CO2 hydrogenation via integrated RWGS and chemical looping (CL-RWGS) is presented to demonstrate the viability of the solution and its thermal management. A reactor packed with 250g of Cu-based oxygen carrier (OC) supported on Al2O3 has been used to convert the CO2 and H2 mixture stream into a syngas stream with a tailored H2 to CO ratio. CL-RWGS is assessed at operating conditions (500 – 600 °C, 1 – 5 bar, H2/CO2 molar ratio 1.0 – 1.3) over multiple cycles. The results demonstrated consistent breakthrough curves during redox cycles, confirming material stability. In 10 consecutive cycles at 600 °C and 1 bar, bed temperatures increased by 184 °C and 132 °C during oxidation and reduction stages respectively. The cooling effects during RWGS showed a decline in solid temperatures, demonstrating effective heat removal strategy while attaining a CO2-to-CO conversion >48%. The outlet gas maintains a H2/CO ratio above 2, confirming the material's dual role as OC and catalyst . During complete CL-RWGS cycles, varying temperature from 500 °C to 600 °C at constant H2/CO2 molar ratio (1.3) and pressure (1 bar) reduces H2/CO molar ratio from 3.14 to 2.35, respectively with a continuous CO2-to-CO conversion > 40%. Additionally, in CL-RWGS cycles, pressure insignificantly affects product molar composition. The study showed the capability of Cu material in converting CO2 into syngas through CL-RWGS technique.
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