CO₂ Conversion to Higher Hydrocarbons on Iron-Based Catalysts : Promoter Impact and Kinetic Studies

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00008971
URN to cite this document: urn:nbn:de:bvb:703-epub-8971-0

Title data

Mai, Florian ; Jess, Andreas:
CO₂ Conversion to Higher Hydrocarbons on Iron-Based Catalysts : Promoter Impact and Kinetic Studies.
In: Chemical Engineering & Technology. Vol. 48 (2025) Issue 4 . - e12010.
ISSN 1521-4125
DOI der Verlagsversion: https://doi.org/10.1002/ceat.12010

	Format: PDF Name: Chem Eng Technol - 2025 - Mai - CO2 Conversion to Higher Hydrocarbons on Iron‐Based Catalysts Promoter Impact and.pdf Version: Published Version Available under License Creative Commons BY 4.0: Attribution
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Abstract

Promoted iron catalysts were tested for their Fischer–Tropsch (FT) activity to convert CO2/H2, CO/H2 and their mixtures to higher hydrocarbons (220 °C–300 °C, 20 bar, H2/(CO2+CO) = 3). The results show that iron-sintered catalysts are able to convert CO2 at moderate conditions to higher hydrocarbons (HCs) with a still low methane selectivity. Kinetic studies showed that CO2 is not directly converted to higher HCs but at first reduced by H2 to CO followed by FTS of CO. For a pure CO2/H2 mixture and a CO2 conversion of 10% (220 °C), the FeCuZnK catalyst has the highest C2+ selectivity (57 wtC%), the lowest methane selectivity (10 wtC%), and 32% of CO2 are converted to the intermediate CO. At 300 °C and a higher CO2 conversion of 47%, the C2+ selectivity is even 73 wtC% (methane 19 wtC%, methanol 4 wtC%, and 4 wtC% CO).

Further data

Item Type:	Article in a journal
Keywords:	CO2 hydrogenation; Fischer–Tropsch synthesis; Iron
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-8971-0
Date Deposited:	10 Mar 2026 11:45
Last Modified:	10 Mar 2026 11:46
URI:	https://epub.uni-bayreuth.de/id/eprint/8971

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