Enhanced Production of C2–C4 Olefins Directly from Synthesis Gas
An attempt made for the selective production of C2–C4 olefins directly from the synthesis gas (CO + H2) has led to the development of a dual catalyst system having a Fischer–Tropsch (K/Fe–Cu/AlOx) catalyst and cracking (H-ZSM-5) catalyst operate in consecutive dual reactors. The flow rate (space velocity) and H2/CO molar ratio of the feed have been optimized for achieving higher CO conversions and olefin selectivities. The selectivity to C2–C4 olefins is further enhanced by optimizing the reaction temperature in the second reactor (cracking), where the product exhibited 51% selectivity to C2–C4 hydrocarbons rich in olefins (77%) with a stable time-on-stream performance in a studied period of 100 h.
KeywordsFT synthesis ZSM-5 Cracking reaction C2–C4 hydrocarbons Olefins
The authors would like to acknowledge funding from the Korea Ministry of Knowledge Economy (MKE) through ‘‘Project of next-generation novel technology development’’ of ITEP. Dr. N. Viswanadham is thankful to Korea Federation of Science & Technology (KOSEF) for giving Brain-Pool fellowship.
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