A Thermodynamic Approach to Olefin Product Distribution in Fischer鈥揟ropsch Synthesis

详细信息    查看全文

• 作者：Xiaojun Lu ; Diane Hildebrandt ; Xinying Liu ; David Glasser
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2012
• 出版时间：December 26, 2012
• 年：2012
• 卷：51
• 期：51
• 页码：16544-16551
• 全文大小：437K
• 年卷期：v.51,no.51(December 26, 2012)
• ISSN：1520-5045

文摘

Conventional Fischer鈥揟ropsch (FT) experiments were performed in both a continuously stirred tank reactor (CSTR) and a plug-flow reactor (PFR) on a TiO₂-supported cobalt catalyst. The olefin/paraffin ratios for short-chain hydrocarbons (C₂鈥揅₅) were found to change when the reaction conditions were kept constant in a CSTR, while the ratio of adjacent olefins (for example, C₄H₈/C₃H₆) remained unchanged. In the experiments with a fixed-bed reactor, the temperature was varied from 210鈥?50 掳C and different flow rates ranging from 1.8鈥?.4 NL h^鈥? g-cat^鈥?. The ratio of adjacent olefins was found to be constant under these conditions as well. After proposing a thermodynamic model for olefin product distribution, we compared the results that the model predicted with those obtained in the experiments, and found that there is good agreement between the thermodynamic predictions and the measured distributions. This supports the postulation that the olefin distribution in the Fischer鈥揟ropsch synthesis (FTS) reaction might be determined by thermodynamics.