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Sorption and condensation of higher hydrocarbons in a Fischer–Tropsch catalyst

Title data

Rößler, Stefan ; Kern, Christoph ; Jess, Andreas:
Sorption and condensation of higher hydrocarbons in a Fischer–Tropsch catalyst.
In: Catalysis Science & Technology. Vol. 9 (2019) Issue 8 . - pp. 1902-1910.
ISSN 2044-4761
DOI: https://doi.org/10.1039/C8CY02551G

Abstract in another language

Liquid higher hydrocarbons accumulate inside of heterogeneous catalyst pores, resulting in negative influences on reaction rates as well as product distribution, especially for industrial mm-particles. Besides the kinetics of the rate of HC formation, the second parameter determining the pore filling is the effective vapor pressure of each HC with C-number i relative to the saturation value, i.e. Φ = pvap,i,eff/psat,i. Ad- and desorption experiments (Co/Al2O3 FT catalyst, paraffins with C-numbers from 4 to 28) were conducted using a magnetic suspension balance (MSB), and reveal that the sorption equilibrium is determined by multi-layer sorption combined with strong capillary condensation. The experimental sorption data, presented here for the first time for long chain HCs under FT conditions, were also modelled successfully to predict Φ-values in a porous FT catalyst depending on the C-number and pore filling degree. The simulation of the filling process based on the kinetics of the FTS and the new sorption model is in agreement with the experimental data of the process also measured using a MSB.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Chemical Engineering
Faculties > Faculty of Engineering Science > Chair Chemical Engineering > Chair Chemical Engineering - Univ.-Prof. Dr.-Ing. Andreas Jess
Research Institutions > Research Units > ZET - Zentrum für Energietechnik
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
600 Technology, medicine, applied sciences > 600 Technology
600 Technology, medicine, applied sciences > 620 Engineering
600 Technology, medicine, applied sciences > 660 Chemical engineering
Date Deposited: 31 Jul 2019 10:39
Last Modified: 31 Jul 2019 10:39
URI: https://eref.uni-bayreuth.de/id/eprint/51677