Article
Energy & Fuels
Chao Wang, Huaqing Zhu, Juan Zhang, Zhijun Huang, Jiangang Chen
Summary: A series of Fe-Mn bimetallic catalysts with different pretreatment atmospheres were used for the Fischer-Tropsch synthesis (FTS). The structure of Fe-Mn bimetallic catalysts was analyzed and the effect of different pretreatment atmospheres on reduction efficiency was investigated. It was found that nitrided Fe-Mn catalysts exhibited better stability and higher light olefin selectivity.
Article
Chemistry, Multidisciplinary
Nabil Majd Alawi, Firas Khaleel AL-Zuhairi, Hoang M. Nguyen, Hassan H. Al-Mohammedawi, Jamal M. Ali
Summary: This study investigates the kinetics of the Fischer-Tropsch process synthesis using feedstocks from biogas. The results show that a simple model can accurately describe the reaction kinetics under different working conditions.
Article
Engineering, Chemical
Imaad Davies, Klaus P. Moller
Summary: The kinetics of n-paraffin and 1-olefin formation in the Fischer-Tropsch reaction system are equilibrium-limited, allowing for an effective description of product distribution and observed reaction behavior trends. The model preserves the polymerization character of the reaction and successfully describes the dominant trends in product distribution as a function of CO conversion, temperature, and pressure.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Energy & Fuels
Agija Stanke, Valdis Kampars
Summary: The transportation sector's significant contribution to greenhouse gas emissions has prompted the search for sustainable and renewable alternatives to fossil fuels. This study focused on the synthesis of mesoporous Fe/SBA-15 catalysts using natural clays as binders and promoters. The results showed that catalysts agglomerated with kaolin exhibited better performance, and catalysts in powdered form had higher CO conversion rates.
Article
Engineering, Environmental
Congcong Niu, Shupeng Guo, Ming Xia, Jungang Wang, Litao Jia, Bo Hou, Baojun Wang, Debao Li
Summary: Intrinsic kinetic experiments were conducted on an industrial Fischer-Tropsch Synthesis cobalt-based catalyst to develop kinetic models for process and engineering design purposes, as well as to understand the reaction mechanism. A hybrid kinetic model consisting of a Langmuir Hinshelwood Hougen Watson (LHHW) based CO consumption model and a lump-type product distribution-C19+ selectivity model was developed. The model, after parameter evaluation and optimization, demonstrated excellent predictability of CO conversion and C19+ selectivity across a wide range of process conditions. Additionally, it was found that CO activation occurs through a direct dissociation mechanism with the hydrogenation of dissociated C* and O* to CH* and OH* respectively as the rate determining step, with an activation energy of 80.26 kJ mol-1.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Canan Karakaya, Erick White, Dylan Jennings, Michelle Kidder, Olaf Deutschmann, Robert J. Kee
Summary: This manuscript reports a CO2 hydrogenation process using Fe/BZY15 catalysts, in which the effects of temperature, feed composition, and residence time on CO2 conversion and carbon selectivity are studied. The results indicate that the residence time has a significant impact on higher-carbon selectivity and yield, while CO2 activation depends on the redox activity of the catalyst.
Article
Engineering, Chemical
Carlotta Panzone, Regis Philippe, Clemence Nikitine, Alain Bengaouer, Alban Chappaz, Pascal Fongarland
Summary: Mechanistic kinetic models were developed to study the CO2 hydrogenation reaction over an Fe-K/Al2O3 catalyst. The models provide insights into the mechanism and kinetics of the reaction, including the formation of hydrocarbons and oxygenates. The study reveals a complex mechanism involving chain-growth via an alkyl mechanism and CO insertion mechanism for the formation of oxygenate products.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Engineering, Chemical
Yingying Xue, Zengchen Liu, Yaxuan Zhang, Shengyang Duan, Jiangang Chen
Summary: This study reveals that the performance of iron-based catalysts can be modified by simply changing the percentage of Fe(II)/Fe(III) in the raw materials. The catalysts prepared by FeCl2·4H2O exhibit higher CO conversion, lower methane selectivity, and higher C-2-C-4 olefin-to-paraffin ratio, which can be mainly attributed to the higher Fe2+ content in the unreduced state.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Applied
Arash Yahyazadeh, Venu Babu Borugadda, Ajay K. Dalai, Lifeng Zhang
Summary: In this study, a synthesis gas-based Fischer-Tropsch synthesis process was used to produce light olefins, such as ethylene, propylene, and butylene, using an iron catalyst supported on carbon nanotubes (CNTs). The synthesized catalyst showed better dispersion and higher catalytic activity compared to the commercial catalyst. The experimental results indicate that CNTs-supported iron catalysts have potential applications in the production of light olefins.
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, Physical
Xiaoxu Ding, Minghui Zhu, Yi-fan Han, Zixu Yang
Summary: Fe-Mn bimetallic catalysts prepared by different methods showed different catalytic performance and product distribution. Fe4Mn1-SCM catalyst exhibited higher selectivity and stability compared to Fe4Mn1-CP catalyst, which was attributed to the abundant interfacial Fe-MnOx structure.
JOURNAL OF CATALYSIS
(2023)
Article
Engineering, Chemical
Mehar U. Nisa, Yao Chen, Xin Li, Xiangning Jiang, Zhenhua Li
Summary: Fe@C catalysts were synthesized and their performance was studied by investigating the effect of pyrolysis temperature. The catalyst pyrolyzed at 800 degrees C showed high C5+ hydrocarbon selectivity and good reaction stability.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Chemistry, Physical
Sheraz Ahmed, Muhammad Irshad, Wonjoong Yoon, Neha Karanwal, Junjung Rohmat Sugiarto, Muhammad Kashif Khan, Soek Ki Kim, Jaehoon Kim
Summary: Magnesium oxide acts as a promoter in an Fe-based catalyst, facilitating the reduction of Fe oxides and enhancing the C5+ yield. However, the catalyst's activity decreases as magnesium oxide transforms into magnesium carbonate during CO2 conversion.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
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
Chemistry, Physical
Ting Wang, Yuebing Xu, Yufeng Li, Lei Xin, Bing Liu, Feng Jiang, Xiaohao Liu
Summary: This study reports the use of Na-mediated bimetallic Fe-Ni catalyst simply mixed with HZSM-5 to enhance the stable and selective production of aromatics from syngas. The addition of Ni with Na substantially regulates iron carbide formation and suppresses carbon deposition, leading to increased selectivity to light alpha-olefins. The presence of Na weakens the Fe-Ni interaction, reduces electron transfer from Fe to Ni, and promotes the formation of lighter olefins, demonstrating the potential for developing stable and selective iron-based catalysts for the production of FT products.
Article
Chemistry, Physical
Dapeng Liu, Yan Liu, Eileen Yi Ling Goh, Christina Jia Ying Chu, Chuandayani Gunawan Gwie, Jie Chang, Armando Borgna
APPLIED CATALYSIS A-GENERAL
(2016)
Article
Chemistry, Applied
Hiroyuki Kamata, Zhi Qun Tian, Yoshinori Izumi, Catherine K. S. Choong, Jie Chang, Martin Schreyer, Luwei Chen, Armando Borgna
Article
Chemistry, Physical
Zhen Guo, Chunmei Zhou, Daming Shi, Yifan Wang, Xinli Jia, Jie Chang, Armando Borgna, Chuan Wang, Yanhui Yang
APPLIED CATALYSIS A-GENERAL
(2012)
Article
Chemistry, Physical
Jie Chang, Tanate Danuthai, Silvia Dewiyanti, Chuan Wang, Armando Borgna
Article
Engineering, Chemical
Chuan Wang, Zhen Guo, Yanhui Yang, Jie Chang, Armando Borgna
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2014)
Article
Chemistry, Applied
Chee Kok Poh, Sze Wei Daniel Ong, YongHua Du, Hiroyuki Kamata, Kai Shin Catherine Choong, Jie Chang, Yoshinori Izumi, Kentaro Nariai, Noriki Mizukami, Luwei Chen, Armando Borgna
Article
Engineering, Chemical
Yuping Liu, Hiroyuki Kamata, Hiroaki Ohara, Yoshinori Izumi, Daniel Sze Wei Ong, Jie Chang, Chee Kok Poh, Luwei Chen, Armando Borgna
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2020)
Article
Chemistry, Physical
Pratap T. Patil, Dapeng Liu, Yan Liu, Jie Chang, Armando Borgna
APPLIED CATALYSIS A-GENERAL
(2017)
