Mesoporous carbon as an effective support for Fe catalyst for CO2 hydrogenation to liquid hydrocarbons
| Autor: | Sun-Mi Hwang, Seok Ki Kim, Sunkyu Yang, Ki-Won Jun, Chundong Zhang, Seung Ju Han, Yong-Tae Kim, Hae-Gu Park |
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| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_classification
Chemistry Process Chemistry and Technology Diffusion Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Catalysis Liquid hydrocarbons Hydrocarbon Mesoporous carbon Chemical engineering Phase (matter) Chemical Engineering (miscellaneous) 0210 nano-technology Selectivity Waste Management and Disposal |
| Zdroj: | Journal of CO2 Utilization. 37:65-73 |
| ISSN: | 2212-9820 |
| DOI: | 10.1016/j.jcou.2019.11.025 |
| Popis: | Identifying highly efficient catalysts for direct CO2 hydrogenation to liquid hydrocarbons is crucial for CO2 utilization via chemical conversion using renewable resources, the so-called Power-to-Liquids. In this study, well-defined mesoporous carbon (MPC) of 6.9 nm pore size was synthesized as a support material for Fe oxycarbide nanoparticles, which serve as active sites for the CO2 hydrogenation reaction, combining reverse water-gas shift and Fischer-Tropsch reactions. The unique physicochemical properties of MPC favored the formation of an active carbidic Fe phase and the rapid diffusion of produced hydrocarbons which resulted in an enhanced CO2 conversion and long-chain hydrocarbon selectivity. As a result, the MPC supported Fe catalyst showed C5+ hydrocarbon selectivity of 44.5% with a CO2 conversion rate of 50.6% (300 °C, 2.5 MPa, H2/CO2 = 3). |
| Databáze: | OpenAIRE |
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