| Autor: |
Yao B; KACST-Oxford Centre of Excellence in Petrochemicals, Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK., Xiao T; KACST-Oxford Centre of Excellence in Petrochemicals, Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK. xiao.tiancun@chem.ox.ac.uk., Makgae OA; Department of Materials, University of Oxford, Parks Roads, Oxford, OX1 3PH, UK., Jie X; KACST-Oxford Centre of Excellence in Petrochemicals, Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK.; Merton College, University of Oxford, Merton Street, Oxford, OX1 4JD, UK., Gonzalez-Cortes S; KACST-Oxford Centre of Excellence in Petrochemicals, Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK., Guan S; Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, UK.; Harwell-XPS - The EPSRC National Facility for Photoelectron Spectroscopy, Research Complex at Harwell (RCaH), Didcot, Oxon, OX11 0FA, UK., Kirkland AI; Department of Materials, University of Oxford, Parks Roads, Oxford, OX1 3PH, UK.; Electron Physical Sciences Imaging Centre, Diamond Lightsource Ltd., Didcot, Oxford, OX11 0DE, UK., Dilworth JR; KACST-Oxford Centre of Excellence in Petrochemicals, Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK., Al-Megren HA; Materials Division, King Abdulaziz City for Science and Technology, Riyadh, 11442, Kingdom of Saudi Arabia., Alshihri SM; Materials Division, King Abdulaziz City for Science and Technology, Riyadh, 11442, Kingdom of Saudi Arabia., Dobson PJ; The Queen's College, University of Oxford, Oxford, OX1 4AW, UK., Owen GP; Annwvyn Solutions, 76 Rochester Avenue, Bromley, Kent, BR1 3DW, UK., Thomas JM; Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, UK., Edwards PP; KACST-Oxford Centre of Excellence in Petrochemicals, Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK. peter.edwards@chem.ox.ac.uk. |
| Abstrakt: |
With mounting concerns over climate change, the utilisation or conversion of carbon dioxide into sustainable, synthetic hydrocarbons fuels, most notably for transportation purposes, continues to attract worldwide interest. This is particularly true in the search for sustainable or renewable aviation fuels. These offer considerable potential since, instead of consuming fossil crude oil, the fuels are produced from carbon dioxide using sustainable renewable hydrogen and energy. We report here a synthetic protocol to the fixation of carbon dioxide by converting it directly into aviation jet fuel using novel, inexpensive iron-based catalysts. We prepare the Fe-Mn-K catalyst by the so-called Organic Combustion Method, and the catalyst shows a carbon dioxide conversion through hydrogenation to hydrocarbons in the aviation jet fuel range of 38.2%, with a yield of 17.2%, and a selectivity of 47.8%, and with an attendant low carbon monoxide (5.6%) and methane selectivity (10.4%). The conversion reaction also produces light olefins ethylene, propylene, and butenes, totalling a yield of 8.7%, which are important raw materials for the petrochemical industry and are presently also only obtained from fossil crude oil. As this carbon dioxide is extracted from air, and re-emitted from jet fuels when combusted in flight, the overall effect is a carbon-neutral fuel. This contrasts with jet fuels produced from hydrocarbon fossil sources where the combustion process unlocks the fossil carbon and places it into the atmosphere, in longevity, as aerial carbon - carbon dioxide. |
