Rational designation of electromagnetic interface for low-temperature CO₂ reforming CH₄

CO₂ and CH₄ as major causes of global warming could both be eliminated to produce syngas under mild conditions through dry reforming methane driven by electromagnetic induction heating (EMIH-controlled DRM). Using EMIH-configured characterization and density functional theory, it is shown that the EMIH-induced negative electric field at the electromagnetic interface facilitates CO₂ dissociation and atomic oxygen transfer, which is the source of the promoting effect of EMIH. By employing pure H₂ in a one-step high-temperature reduction process, the interfacial effect between the NiMgAl compound and the Fe fiber could be improved, thereby increasing the influence of the EMIH-induced electric field. Consequently, the R-NiMgAl/Fe fiber catalyst with EMIH achieves about 90 % conversions of CH₄ and CO₂ at 500 ℃, while traditional heating-driven DRM on R-NiMgAl requires 700 ℃ to accomplish the same result.