Journal
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume 59, Issue 5, Pages 2155-2162Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.9b05342
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Funding
- National Natural Science Foundation of China [51776206]
- Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program [2017BT01N092]
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In this work, manganese well-dispersed on Fe3O4 microsphere (Mn-Fe3O4) catalyst was synthesized. It exhibited excellent catalytic performance for the direct conversion of carbon dioxide (CO2) into light olefins. A CO2 conversion of 44.7% with high selectivity of light olefin (46.2%, yield of 18.7%), high O/P ratio (6.5), and low selectivity of CO (9.4%) was obtained over the 10Mn-Fe3O4 catalyst. The Mn-Fe3O4 catalyst was studied by XRD, SEM, (HR)TEM, STEM-EDS, H-2-TPR, and CO2-TPD. The result indicated that the manganese promoter could facilitate the adsorption of CO2 and the activation of C=O bonds as well as inhibit the secondary hydrogenation. This work offered a novel Fe-based catalyst system to the utilization of CO2 and an understanding in promoting C=O bond activation in the first step of CO2 hydrogenation to hydrocarbon reaction.
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