Syngas conversion offers a promising route to produce olefins from non-petroleum resources. This study presents a high-carbon-efficiency Fischer-Tropsch to olefins (FTO) process achieving 80.1% olefins selectivity with ultralow CH₄ and CO₂ (<5%) at 45.8% CO conversion. This is accomplished using sodium-promoted ruthenium nanoparticles exhibiting negligible water-gas-shift reactivity. The catalyst demonstrates excellent stability (550 hours) and performance in a pilot-scale reactor, suggesting significant industrial potential.
