Pore Diffusion in the Fischer–Tropsch Synthesis : Limitation or Advantage in Multi-Tubular Reactors?

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00009013
URN to cite this document: urn:nbn:de:bvb:703-epub-9013-7

Title data

Kern, Christoph ; Jess, Andreas:
Pore Diffusion in the Fischer–Tropsch Synthesis : Limitation or Advantage in Multi-Tubular Reactors?
In: Chemical Engineering & Technology. Vol. 48 (2025) Issue 7 . - e70049.
ISSN 1521-4125
DOI der Verlagsversion: https://doi.org/10.1002/ceat.70049

	Format: PDF Name: Chem Eng Technol - 2025 - Kern - Pore Diffusion in the Fischer Tropsch Synthesis Limitation or Advantage in.pdf Version: Published Version Available under License Creative Commons BY 4.0: Attribution
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Abstract

The Fischer–Tropsch synthesis (FTS) is a highly exothermic reaction often conducted in multi-tubular fixed-bed reactors. Pore diffusion limitations within the catalyst particles are typically viewed as detrimental due to reduced reaction rates. However, this study demonstrates that these limitations can provide significant benefits in terms of reactor stability and performance. Using a 2D numerical reactor model, we explore the influence of pore diffusion on temperature profiles, conversion, and thermal runaway behavior under realistic operating conditions. Results reveal that pore diffusion reduces the apparent activation energy, effectively mitigating thermal sensitivity and increasing the allowable level of reaction temperature. Consequently, higher CO conversions can be achieved safely compared to an idealized scenario without pore diffusion limitations. Hence, pore diffusion limitations, rather than being a disadvantage, act as a stabilizing factor in FTS reactors.

Further data

Item Type:	Article in a journal
Keywords:	Fischer–Tropsch synthesis; Multi-tubular reactor; Pore diffusion limitations
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
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 > Zentrum für Energietechnik - ZET Faculties Research Institutions Research Institutions > Research Units
Language:	English
Originates at UBT:	Yes
URN:	urn:nbn:de:bvb:703-epub-9013-7
Date Deposited:	24 Mar 2026 11:42
Last Modified:	24 Mar 2026 11:43
URI:	https://epub.uni-bayreuth.de/id/eprint/9013

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