Review
Chemistry, Multidisciplinary
Yanping Chen, Jiatong Wei, Melis S. Duyar, Vitaly V. Ordomsky, Andrei Y. Khodakov, Jian Liu
Summary: This review summarizes the recent advances in the preparation of carbon-based catalysts for Fischer-Tropsch synthesis, highlighting the importance of support and metal properties, activity, product selectivity, and their interactions. Current challenges and future trends in the commercial utilization of carbon-based catalysts for FTS are also discussed.
CHEMICAL SOCIETY REVIEWS
(2021)
Article
Energy & Fuels
Dalia Liuzzi, Francisco J. Perez-Alonso, Sergio Rojas
Summary: Ru-Co/Al2O3 and Ru-Fe/Al2O3 catalysts prepared by reduction-deposition method exhibit high activity in Fischer-Tropsch Synthesis, showing different conversion rates and product selectivity. The interaction between Ru and Co in Ru-Co/Al2O3 enhances the activity, while Ru-Fe/Al2O3 displays superior initial performance but declines over time, with less enriched products compared to Ru/Al2O3.
Article
Chemistry, Physical
Deizi Peron, Alan J. Barrios, Alan Taschin, Iulian Dugulan, Carlo Marini, Giulio Gorni, Simona Moldovan, Siddardha Koneti, Robert Wojcieszak, Joris W. Thybaut, Mirella Virginie, Andrei Y. Khodakov
Summary: The study found that antimony and tin have strong promoting effects on silica supported iron Fischer-Tropsch catalysts, significantly increasing the reaction rate and improving catalyst stability. The addition of these elements through impregnation can increase the intrinsic activity of iron surface sites by 7-10 times without affecting iron dispersion.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Applied
Ming Zhao, Jinchang Sun, Xiaohong Li, Qianwen Zhang
Summary: By adjusting the calcination temperature of the alumina supporter and adding S precursors, the catalytic performance of the iron-based catalyst for the direct synthesis of light olefins from syngas can be optimized.
Article
Energy & Fuels
Zhonghao Han, Weiyong Ying, Haitao Zhang, Hongfang Ma, Weixin Qian
Summary: Co-precipitated FeSi-cp catalysts, impregnated FeSi-im catalyst, and core-shell Fe@Si catalysts synthesized through different methods were characterized using various techniques. The configuration between Fe and Si was found to significantly influence the catalyst performance. FeSi-cp and FeSi-im exhibited high dispersion but were prone to agglomeration in FTS reactions. On the other hand, Fe@Si displayed high crystallinity and strong CO chemisorption capacity, promoting the formation of Fe5C2. Additionally, the SiO2 shell in the core-shell structure prevented carbon deposition and inhibited the production of C-5(+) species. The FTS performance results demonstrated that the core-shell Fe@Si catalysts exhibited higher selectivity towards C-2(=)4= and better stability over a period of 120 hours.
Article
Chemistry, Physical
Jane N. Agwara, Nikki J. Bakas, Michael L. Neidig, Marc D. Porosoff
Summary: Fe-based catalysts encapsulated within ZSM-5 exhibit improved selectivity towards desired light olefins in Fischer-Tropsch synthesis. While the encapsulation process may destabilize the Fe-based active phase, the core-shell catalysts demonstrate enhanced performance compared to the control samples.
Article
Chemistry, Physical
Xiaoxue Han, Qiao Zhao, Huiyong Gong, Chongyang Wei, Jing Lv, Yue Wang, Mei-yan Wang, Shouying Huang, Xinbin Ma
Summary: In this study, Fe-oxide interfaces were constructed to investigate their effect on phase transformation and Fischer-Tropsch synthesis (FTS) performance. By correlating performance to the composition of iron species, the crucial role of Fe2.2C in high CO conversion and C5+ productivity has been confirmed. Furthermore, a heterogeneous spatial distribution of iron carbides and oxides induced by Fe-oxide interfaces was observed. This study provides insights for iron carbides formation and stability by modulating interfaces, which guides the further development of Fe-based FTS catalysts.
Article
Energy & Fuels
Yi Yang, Haitao Zhang, Hongfang Ma, Weixin Qian, Qiwen Sun, Weiyong Ying
Summary: The effects of alkali metal promoters on high-temperature Fischer-Tropsch synthesis catalysts were investigated. The alkali metals donated electrons to iron species, promoting CO dissociative adsorption and suppressing hydrogen adsorption. This led to an increase in selectivity to light olefins. The content of e'-Fe2.2C increased with increasing basicity of the catalyst surface, which enhanced the C-C coupling ability and chain growth.
Article
Chemistry, Physical
Xin-Pu Fu, Wen-Zhu Yu, Chao Ma, Jun Lin, Shi-Qi Sun, Shan-Qing Li, Pu-Ning Ren, Feng-Yan Jia, Meng-Yuan Li, Wei-Wei Wang, Xu Wang, Chun-Jiang Jia, Ke Wu, Rui Si, Chun-Hua Yan
Summary: The study successfully synthesized phase-pure Fe2N nanoparticles on Al2O3, achieving effective phase transformation to Fe2C and demonstrating high catalytic activity and selectivity.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Energy & Fuels
Zhunzhun Ma, Weixin Qian, Haitao Zhang, Hongfang Ma, Qiwen Sun, Weiyong Ying
Summary: The research found that the effects of magnesium and lithium on the catalyst can enhance CO adsorption, improve FTO activity, weaken carbonization process, increase the selectivity of light olefins, as well as promote CO conversion, and decrease CO2 production.
Article
Chemistry, Multidisciplinary
Mahin Jabalameli, Yahya Zamani, Sahar Baniyaghoob, Laleh Shirazi
Summary: Cu-Fe catalysts incorporated with different amounts of Ca and Mn promoters were prepared and evaluated in the Fischer-Tropsch synthesis reaction. The effect of Ca and Mn promoters individually and in combination on the catalysts' performance was investigated. The doubly-promoted catalyst achieved higher CO conversion and yield due to the synergistic effect of the two promoters.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Chike George Okoye-Chine, Mahluli Moyo, Diane Hildebrandt
Summary: This study focuses on the influence of surface hydrophobicity of SiO2 supports on the performance of SiO2-supported Fe catalysts in Fischer-Tropsch synthesis. Hydrophobized SiO2 supports improved the catalytic activity of Fe catalysts, reduced CH4 and CO2 selectivity, and increased C5+ selectivity.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Chemistry, Physical
Haiyan Yang, Yaru Dang, Xu Cui, Xianni Bu, Jiong Li, Shenggang Li, Yuhan Sun, Peng Gao
Summary: This study fabricated zinc- and sodium-modulated iron catalysts, which exhibited the best activity and stability. Copper was found to decrease the energy barrier of the rate-determining step for olefin hydrogenation and result in a lower olefin-to-paraffin ratio. The ZnO/Fe5C2 interface facilitated olefin desorption and inhibited the undesirable secondary reaction of olefins, enabling a high selectivity.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Applied
Amaury Indekeu, Esther Bailon-Garcia, Auguste Fernandes, Ruben Baltazar, Ana Maria Ferraria, Ana Maria B. do Rego, M. Filipa Ribeiro
Summary: New alternative routes to traditional Fischer-Tropsch Synthesis (FTS) must be established to achieve a more efficient process in terms of energy and sustainability. Solar photocatalytic-assisted FTS is a promising new approach for obtaining fuels from renewable resources. Metal-doped TiO2 catalysts show enhanced photocatalytic activity under solar radiation, lowering the band gap and increasing the methanation activity, as well as promoting the production of ethanol.
Article
Chemistry, Physical
Madita Einemann, Simon Haida, Nico Fischer, Nattawut Osakoo, Jatuporn Wittayakun, Frank Roessner
Summary: The role of cobalt chloride hexahydrate as a precursor of cobalt bulk catalysts was investigated for the Fischer-Tropsch reaction. Different oxygen-containing cobalt compounds were detected through in situ DRIFTS, in situ XANES, in situ XRD, and inverse TPR techniques. The reaction network of cobalt chloride transformation was discussed, taking into account the back mixing in different geometries of measuring cells. The choice of catalyst activation procedure is important for the formation of cobalt oxide and subsequent activity in the Fischer-Tropsch reaction.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)