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Dynamic Electric Field Assisted CO 2 Methanation

Ranganathan, Rajagopalan V. [Idaho National Laboratory (INL), Idaho Falls, ID (United States)] (ORCID:0000000313239072)·Sarkar, Debasish [Idaho National Laboratory (INL), Idaho Falls, ID (United States)]·Maiti, Debtanu [Idaho National Laboratory (INL), Idaho Falls, ID (United States)] (ORCID:0000000263600906)·Hartvigsen, Jeremy Lee [Idaho National Laboratory (INL), Idaho Falls, ID (United States)] (ORCID:0000000293205552)·Fushimi, Rebecca R. [Idaho National Laboratory (INL), Idaho Falls, ID (United States)] (ORCID:0000000275700234)
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Abstract

Energy-efficient advanced chemical reactions are essential for accelerating the growth of hydrocarbon economy. Sabatier reaction stands out for its potential to effectively transform carbon dioxide into valuable hydrocarbons and is an asset for long-duration Mars missions. This study explores a novel catalytic approach that harnesses electric field-assisted catalysis to substantially enhance the efficiency of the Sabatier reaction. Application of a dynamically perturbed electric field at 1000 Hz resulted in remarkable enhancements, increasing methane formation rates by over 100% at 350 °C and by 74% at 400 °C. Post-reaction catalyst characterization further revealed reduced blockage of active catalytic surface area under the applied electric field, emphasizing improved catalytic longevity and sustained activity. These results underscore the potential of tailored electric field waveforms to dynamically modulate elementary reaction kinetics and surface processes, positioning electric field-assisted catalysis as a transformative strategy for energy-efficient, cost-effective chemical manufacturing and energy conversion technologies.

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Ranganathan, Rajagopalan V. [Idaho National Laboratory (INL), Idaho Falls, ID (United States)] (ORCID:0000000313239072), Sarkar, Debasish [Idaho National Laboratory (INL), Idaho Falls, ID (United States)], Maiti, Debtanu [Idaho National Laboratory (INL), Idaho Falls, ID (United States)] (ORCID:0000000263600906), Hartvigsen, Jeremy Lee [Idaho National Laboratory (INL), Idaho Falls, ID (United States)] (ORCID:0000000293205552), Fushimi, Rebecca R. [Idaho National Laboratory (INL), Idaho Falls, ID (United States)] (ORCID:0000000275700234). 2026-03-27. Dynamic Electric Field Assisted CO 2 Methanation. https://doi.org/10.3390/pr14071067

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