Kinetic Model of Product Distribution over Fe Catalyst for Fischer−Tropsch Synthesis

详细信息    查看全文

• 作者：Rongle Zhang ; Jie Chang ; Yuanyuan Xu ; Liren Cao ; Yongwang Li ; Jinglai Zhou
• 刊名：Energy & Fuels
• 出版年：2009
• 出版时间：October 15, 2009
• 年：2009
• 卷：23
• 期：10
• 页码：4740-4747
• 全文大小：797K
• 年卷期：v.23,no.10(October 15, 2009)
• ISSN：1520-5029

文摘

A new kinetic model of the Fischer−Tropsch synthesis (FTS) is proposed to describe the non-Anderson−Schulz−Flory (ASF) product distribution. The model is based on the double-polymerization monomers hypothesis, in which the surface C₂* species acts as a chain-growth monomer in the light-product range, while C₁* species acts as a chain-growth monomer in the heavy-product range. The detailed kinetic model in the Langmuir−Hinshelwood−Hougen−Watson type based on the elementary reactions is derived for FTS and the water−gas-shift reaction. Kinetic model candidates are evaluated by minimization of multiresponse objective functions with a genetic algorithm approach. The model of hydrocarbon product distribution is consistent with experimental data (<C₄₅). The new model gives a sound interpretation of the experimental data.