Abstract
Syngas conversion serves as a competitive strategy to produce olefins chemicals from nonpetroleum resources. However, the goal to achieve desirable olefins selectivity with limited undesired C1 by-products remains a grand challenge. Herein, we present a non-classical Fischer-Tropsch to olefins process featuring high carbon efficiency that realizes 80.1% olefins selectivity with ultralow total selectivity of CH4 and CO2 (<5%) at CO conversion of 45.8%. This is enabled by sodium-promoted metallic ruthenium (Ru) nanoparticles with negligible water-gas-shift reactivity. Change in the local electronic structure and the decreased reactivity of chemisorbed H species on Ru surfaces tailor the reaction pathway to favor olefins production. No obvious deactivation is observed within 550 hours and the pellet catalyst also exhibits excellent catalytic performance in a pilot-scale reactor, suggesting promising practical applications.
| Original language | English |
|---|---|
| Article number | 5987 |
| Journal | Nature Communications |
| Volume | 13 |
| Issue number | 1 |
| DOIs | |
| State | Published - Dec 2022 |
Funding
This work was financially supported by the Natural Science Foundation of China (91945301 to L.Z., 22072177 to T.L., 22172188 to S.L.), National Key R&D Program of China (2021YFF0500702 to L.Z.), Natural Science Foundation of Shanghai (22JC1404200 to L.Z., 21ZR1471700 to T.L.), Program of Shanghai Academic/ Technology Research Leader (20XD1404000 to L.Z.), Key Research Program of Frontier Sciences, CAS (Grant No. QYZDB-SSW-SLH035 to L.Z.), the “Transformational Technologies for Clean Energy and Demonstration”, Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDA21020600 to L.Z.), Youth Innovation Promotion Association of CAS. Specially, we acknowledge the XAFS station (BL14W1) of the Shanghai Synchrotron Radiation Facility for the XAS test. This work was financially supported by the Natural Science Foundation of China (91945301 to L.Z., 22072177 to T.L., 22172188 to S.L.), National Key R&D Program of China (2021YFF0500702 to L.Z.), Natural Science Foundation of Shanghai (22JC1404200 to L.Z., 21ZR1471700 to T.L.), Program of Shanghai Academic/ Technology Research Leader (20XD1404000 to L.Z.), Key Research Program of Frontier Sciences, CAS (Grant No. QYZDB-SSW-SLH035 to L.Z.), the “Transformational Technologies for Clean Energy and Demonstration”, Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDA21020600 to L.Z.), Youth Innovation Promotion Association of CAS. Specially, we acknowledge the XAFS station (BL14W1) of the Shanghai Synchrotron Radiation Facility for the XAS test.