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.