Abstract
The sustainable and efficient conversion of heterogeneous carbonaceous wastes into hydrogen-rich gas is vital foradvancing clean energy technologies and addressing the dual challenges of environmental pollution and resourcerecovery. This study establishes a pioneering plasma-assisted and sorption-enhanced strategy for efficient greenH_2 production from biomass/plastics mixtures over a structured multifunctional catalyst. The core novelty lies inthe synergistic integration of plasma with a structured multifunctional catalyst, enabling simultaneous volatilecracking, catalytic reforming, and in-situ CO_2 capture. The Ni-Mg-Ca/γ-Al_2O_3 catalyst is rationally engineered tointegrate reforming activity, Mg/Ca-induced basicity and CO_2 capture functionality within a dischargeoptimizingmonolithic structure. Under non-thermal dielectric barrier discharge (DBD) plasma conditions, thesynergistic coupling of plasma and catalyst significantly enhances the decomposition of heavy volatiles, tarcracking and CO_2 removal, leading to improved H_2 yield and selectivity. The improved in-situ CO_2 sorption by CaO and plasma promotes thermodynamically favorable water-gas shift and dry reforming reactions, while the structured design ensures uniform plasma discharge and mitigates catalyst deactivation. Overall, this integrated system demonstrates a promising route for low-temperature, modular H_2 production from mixed carbonaceous wastes, offering both catalytic efficiency and operational flexibility. The proposed strategy highlights the potential of combining plasma catalysis with in-situ CO_2 sorption for next-generation waste-to-hydrogen energy technologies.
NETL
NSTL
Elsevier