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Effect of Particle Size and Coke Formation on n-Octane Dehydrogenation

Title data

Prucker, Tobias ; Lamberty, Aliena ; Thiessen, Johannes ; König, Matthias ; Jess, Andreas:
Effect of Particle Size and Coke Formation on n-Octane Dehydrogenation.
In: Chemie Ingenieur Technik. Vol. 94 (2022) Issue 11 . - pp. 1711-1719.
ISSN 1522-2640
DOI: https://doi.org/10.1002/cite.202200054

Official URL: Volltext

Abstract in another language

The effect of particle size as well as of coke formation on conversion of intermediate chain length paraffins (C6–C9) to the corresponding olefins was investigated on a promoted Pt catalyst with the model substance n-octane. Increasing the particle size leads to pore diffusion limitations and thus to a reduction of the activity for paraffin conversion and of the octene selectivity caused by more pronounced formation of consecutive products (aromatics, octadienes). Both effects are adequately predicted by the developed kinetic model. The activity of dehydrogenation declines with the content of coke, but to a lesser extent than the rate of coke formation, which is beneficial regarding the catalyst lifetime. The initial activity is fully recovered by mild coke burn-off (T < 470 °C).

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Catalyst deactivation; Internal diffusion limitation; Modeling; n-Octane dehydrogenation
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
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: 03 Nov 2022 08:41
Last Modified: 03 Nov 2022 08:41
URI: https://eref.uni-bayreuth.de/id/eprint/72635