| Autor: |
Zheng, Q, Williams, J, Van Thiel, LR, Elgersma, SV, Mantle, MD, Sederman, AJ, Baart, TA, Bezemer, GL, Guédon, CM, Gladden, LF |
| Přispěvatelé: |
Sederman, AJ [0000-0002-7866-5550], Baart, TA [0000-0002-4531-3196], Bezemer, GL [0000-0002-7344-9250], Guédon, CM [0000-0002-5293-955X], Gladden, LF [0000-0001-9519-0406], Apollo - University of Cambridge Repository |
| Rok vydání: |
2023 |
| Předmět: |
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| Popis: |
Optimisation of a heterogeneous catalytic process requires characterisation of the catalyst at industrially-relevant conditions and lengthscales. Here we use magnetic resonance imaging to gain insight into Fischer-Tropsch synthesis occurring in a pilot-scale fixed-bed reactor operating at 220 °C, 37 bar, and for three H2/CO feed ratios. Molecular diffusion and carbon number of hydrocarbon products are spatially-resolved within both the reactor and individual 1 wt% Ru/TiO2 catalyst pellets. These data highlight the importance of mass transfer, in addition to nanoscale catalyst activity, on catalyst performance. In particular, a start-up time of up to 3 weeks is required for steady-state to be achieved in the catalyst pores. Further, the average carbon number present in the pores can be as much as double that in the product wax. Operando characterisation of water and oxygenates present in the pores is also achieved. The presence of a water-rich liquid at the pore surface is confirmed. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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