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 ₂ 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 ₂ by the sorbent zeolite 5A in the first step, and CH ₄ addition during the plasma-based desorption of CO ₂ enables DRM to various value-added products in the second step, such as H ₂ , CO, hydrocarbons, and the byproduct H ₂ O. Furthermore, our work also demonstrates that zeolite has the potential to increase the conversion of CO ₂ and CH ₄ , attributed to its capability to capture H ₂ O. Aside from the notable carbon deposition, material analysis shows that the zeolite remains relatively stable under plasma exposure.
Competing Interests: The authors declare no competing financial interest.
(© 2024 The Authors. Published by American Chemical Society.)