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Accumulation of liquid hydrocarbons during cobalt-catalyzed Fischer–Tropsch synthesis - influence of activity and chain growth probability

Title data

Rößler, Stefan ; Kern, Christoph ; Jess, Andreas:
Accumulation of liquid hydrocarbons during cobalt-catalyzed Fischer–Tropsch synthesis - influence of activity and chain growth probability.
In: Catalysis Science & Technology. Vol. 9 (2019) Issue 15 . - pp. 4047-4054.
ISSN 2044-4761
DOI: https://doi.org/10.1039/C9CY00671K

Abstract in another language

During Fischer–Tropsch (FT) synthesis higher liquid hydrocarbons accumulate in the catalyst pores. The resulting mass transport limitations may lead to a decrease in reaction rate and also an unwanted higher methane formation, particularly for catalysts of mm-size as used in fixed bed reactors. The time required for complete pore filling and to reach steady state conditions, respectively, depends on the activity, chain growth probability α and pore structure (pore radii distribution) of the catalyst. The pore filling process was investigated in a magnetic suspension balance for two catalysts with a high and low α-value, Co/Al2O3 (α = 0.89) and Co/SiO2 (0.64). The resulting filling times are significantly different, two days for α = 0.89 and more than 400 days for α = 0.64. The modelling of the pore filling process is in good agreement with the experimental data. Therefore, the model was also utilized to predict the general influence of activity and α-value on the pore filling time of a FT catalyst.

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 10:56
Last Modified: 31 Jul 2019 10:56
URI: https://eref.uni-bayreuth.de/id/eprint/51682