Bifunctional Ni-Ca based material for integrated CO2 capture and conversion via calcium-looping dry reforming

• CO 2 capture and in-situ conversion were achieved via isothermal calcium-looping dry reforming process. A bifunctional Ni-Ca based material was successfully synthesized. Introduction of ZrO coating contributed to stabilize CaO Ni. The CeO additive facilitated the activation CH 4 . This could drive process under a thermodynamically unfavorable condition. Effective integration its is an attractive strategy reduce anthropogenic emissions meanwhile achieve potential revenue molecule. Calcium-looping methane (CaLDRM) has emerged as such promising process, implemented over reactor combining CaO-based sorbent Ni-based catalyst, with into syngas. Herein, we synthesize material, i.e. Ni nanoparticles co-loaded on -coated CaCO 3 , which enables release at temperature favorable for DRM reaction, allowing operate CaLDRM in single by simple gas switching. Thanks stabilization effect layer, both particles are exempted from severe sintering, maintaining activity catalysis. addition contributes not only combat accumulation inactive carbon during long-term but also activate accordingly enhancing syngas production, cyclic CaLDRM. Importantly, can succesfully cycles, converting 40 % 5 vol% feed concentration (as low real flue gas) 720 °C, extremely condition (equilibrium below %).