The sol-gel derived Co-Mn/TiO₂ catalysts for light olefins production

详细信息    查看全文

• 作者：Mohammad Mehdi Khodaei ; Mostafa Feyzi ; ^{Dalahoo2011@yahoo.com" class="auth_mail} ; Jahangir Shahmoradi ; Mohammad Joshaghani
• 关键词：Fischer-Tropsch synthesis ; light olefins ; characterization
• 刊名：Journal of Fuel Chemistry and Technology
• 出版年：February, 2014
• 年：2014
• 卷：42
• 期：2
• 页码：212-218
• 全文大小：2393 K

文摘

In this research work, two 30%(Co-Mn)/TiO₂ catalysts were prepared using sol-gel (catalyst A) and co-precipitation (catalyst B) methods. The activity and selectivity to C_2-4 light olefins in Fischer-Tropsch synthesis (FTS) has been studied in a fixed-bed reactor under different operational conditions. These operational conditions were: temperature 220-280掳C, and total pressure from 0.1-0.6 MPa. The optimum operating conditions were investigated after steady state. As the results shown, the catalyst A was more selective to C_2-4 olefins (58.7% in 260掳C) and catalyst B was more selective to C₅₊ hydrocarbons. Characterization of both catalysts was carried out by using X-ray diffraction (XRD), scanning electron microscopy (SEM) and N₂ adsorption-desorption measurements methods.