Enhanced Production of C₂鈥揅₄ Olefins Directly from Synthesis Gas

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• 作者：Yun-Jo Lee ; Jo-Yong Park ; Ki-Won Jun ; Jong Wook Bae and Nagabhatla Viswanadham
• 关键词：FT synthesis ; ZSM ; 5 ; Cracking reaction ; C2&#8211 ; C4 hydrocarbons ; Olefins
• 刊名：Catalysis Letters
• 出版时间：November, 2008
• 出版年：2008
• 期刊代码：13_1011372X
• 类别：ch
• 卷：126
• 期：1-2
• 页码：149-154
• 数据来源：sp

摘要

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.