Sorption-Enhanced Dry Reforming of Methane in a DBD Plasma Reactor for Single-Stage Carbon Capture and Utilization.

Plasma-sorbent systems are a novel technology for single-stage carbon capture and utilization (CCU), where the plasma enables the desorption of CO from a sorbent and the simultaneous conversion to CO. In this study, we test the flexibility of a plasma-sorbent system in a single unit, specifically for sorption-enhanced dry reforming of methane (DRM). The experimental results indicate the selective adsorption of CO by the sorbent zeolite 5A in the first step, and CH addition during the plasma-based desorption of CO enables DRM to various value-added products in the second step, such as H, CO, hydrocarbons, and the byproduct HO. Furthermore, our work also demonstrates that zeolite has the potential to increase the conversion of CO and CH, attributed to its capability to capture HO. Aside from the notable carbon deposition, material analysis shows that the zeolite remains relatively stable under plasma exposure.