Abstract
Fischer-Tropsch synthesis (FTS) is explored as a candidate one-step process for the selective conversion of synthesis gas to short and branched hydrocarbons. Novel structured catalysts for in-situ upgrading of FTS products to gasoline-range hydrocarbons are synthesized by coating controlled-thickness ZSM-5 films on the surface of Co-Al2O3/monolith substrates. FTS catalysts with coating of microporous and mesoporous ZSM-5 are synthesized, characterized and tested. These catalysts leverage the benefits of monolith reactors as efficient mass and heat transfer structures, with the ZSM-5 layer as a hydrocarbon cracking and isomerization agent. Hierarchical ZSM-5 co-catalysts are shown to relax mass transfer limitations through the zeolite film, thus improving conversion and selectivity. The proposed co-catalysts exhibit high CO conversion and high gasoline selectivity with high octane number. Loss of catalyst activity was observed and attributed to ZSM-5 pore plugging by C13+ saturated hydrocarbons. In-situ regeneration of the catalysts enabled stability in FTS performance.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
