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.
Review
Biotechnology & Applied Microbiology
Pavan K. Gupta, Vineet Kumar, Sudip Maity
Summary: The Fischer-Tropsch (FT) process is an alternative route to produce synthetic liquid fuels, with the potential to replace petroleum-based transportation fuels and help address fuel shortages.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2021)
Article
Green & Sustainable Science & Technology
P. Jain, M. Chimote, C. P. Vinod
Summary: Bimetallic nanoparticles with synergistic effects can enhance the catalytic activity, selectivity, and stability of solid materials. The study synthesized Au@Co core-shell bimetallic nanoparticles and demonstrated efficient and stable CO conversion in the FT reaction.
MATERIALS TODAY SUSTAINABILITY
(2021)
Article
Energy & Fuels
Pavan Kumar Gupta, Abhishek Mahato, Goutam Kishore Gupta, Gajanan Sahu, Sudip Maity
Summary: This study investigates the catalytic conversion of syngas through Fischer-Tropsch route using two different supported catalysts (MA and SBA-15), and finds that they exhibit different selectivities in product distribution.
OIL & GAS SCIENCE AND TECHNOLOGY-REVUE D IFP ENERGIES NOUVELLES
(2021)
Article
Chemistry, Applied
Hyun Dong Kim, Hyun-tae Song, Ali Fazeli, Ali Alizadeh Eslami, Young Su Noh, Nasim Ghaffari Saeidabad, Kwan-Young Lee, Dong Ju Moon
Summary: In this study, a hybrid FTS catalyst was designed by mixing different catalysts for the compact design of the GTL-FPSO process. The addition of SAPO-34 to the Co/γ-alumina catalyst resulted in the production of lighter fuel. Additionally, the CO2/(CO + CO2) ratio over the Co/SAPO-34 catalyst was found to have an optimum value of around 0.25, leading to the highest C5+ selectivities and carbon conversion, and the lowest methane selectivity.
Article
Engineering, Chemical
Nikita Sharkov, Zahra Gholami, Ivana Hradecka, Zdenek Tisler, Josef Simek
Summary: This study compared the catalytic activity and product selectivity of cobalt and iron catalysts supported on SBA-15, with and without a carbide phase and reduction treatment before the reaction. The presence of carbide phase and reduction treatment were found to significantly influence the catalytic behavior and product selectivity. The findings provide new insights into the role of carbide in the performance of cobalt and iron catalysts in Fischer-Tropsch synthesis.
Article
Energy & Fuels
Wenli Lu, Jungang Wang, Zhongyi Ma, Congbiao Chen, Yan Liu, Bo Hou, Debao Li, Baojun Wang
Summary: The role of carbon deposits during Fischer-Tropsch synthesis (FTS) on cobalt catalysts is still debated. This study investigates the effects of pre-deposited composite and single carbon on cobalt catalysts in FTS. Different types of carbon deposits (atomic carbon, polymeric carbon, graphitic carbon) are identified and characterized using TPH, Raman, and XPS. Results show that the presence of pre-deposited carbon significantly affects the catalytic activity, methane selectivity, and stability of the Co-based catalysts in FTS.
Article
Chemistry, Physical
Tobias F. Kimpel, Jin-Xun Liu, Wei Chen, Robert Pestman, Emiel J. M. Hensen
Summary: Through IR spectroscopy and DFT calculations, it has been discovered that in the Fischer-Tropsch reaction, Mn promotes a silica-supported Co catalyst with a MnO layer covering the Co surface, activating adsorbed CO through reaction with an oxygen vacancy. This results in higher activity, higher CHx coverage, increased C5+ selectivity, and decreased CH4 selectivity. Increasing pressure amplifies the selectivity differences. However, above around 4 bar, the addition of Mn decreases C5+ selectivity, possibly due to its promotion of C-O bond dissociation but not chain growth. Migration of formed monomers for chain growth on the Co surface may be hindered by high CO coverage, especially at high pressure.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Physical
Alexander Herbers, Christoph Kern, Andreas Jess
Summary: Sustainable transportation fuels are necessary for the energy transition. A new method for producing synthetic sulfur free maritime fuel is introduced, using Co-catalyzed Fischer-Tropsch synthesis (FTS) with syngas based on plasma technology containing traces of O-2. Experimental results demonstrate that the catalyst remains active and does not affect the distribution of C2+-hydrocarbons under low temperature FTS conditions with the presence of H-2. O-2 is converted into H2O and CO2 in varying proportions, with a higher CO concentration increasing CO2 selectivity. This research may provide a new CO2 source for carbon-neutral fuels.
Article
Chemistry, Physical
Shupeng Guo, Congcong Niu, Zhongyi Ma, Jungang Wang, Bo Hou, Litao Jia, Debao Li
Summary: Introducing Ba and CN species into Co/Al2O3 catalyst can enhance the electron density on the cobalt surface, which improves the C-5(+) selectivity and C-3 o/p ratio, leading to enhanced catalytic performance in Fischer-Tropsch synthesis reaction.
Article
Chemistry, Applied
C. F. Toncon-Leal, J. F. Munera, J. J. Arroyo-Gomez, K. Sapag
Summary: Iron, cobalt, and bimetallic catalysts were synthesized and impregnated on mesoporous silica support to study their behavior in Fischer-Tropsch Synthesis. Bimetallic catalysts exhibited higher catalytic activity than monometallic catalysts.
Article
Materials Science, Ceramics
Ming Hao, Peizhang Gao, Wei Liu, Baizeng Fang, Jinsheng Liang, Tingting Zhang, Youpeng Ding, Hui Zhang, Fei Wang
Summary: A novel Co/CoAl2O4/sepiolite nanocomposite was synthesized in this study, with optimal conditions identified for fabrication. The nanocomposite showed fine cobalt nanoparticles anchored on the surface of CoAl2O4, leading to higher selectivity for high-carbon hydrocarbons in Fischer-Tropsch synthesis. This work provides an effective strategy for low-cost batch fabrication of efficient cobalt-based catalysts.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Jirong Bai, Mingyao Song, Jiazheng Pang, Lingling Wang, Jianping Zhang, Xiankai Jiang, Zhijiang Ni, Zhilei Wang, Quanfa Zhou
Summary: In this study, a facile strategy was used to prepare high-performance Co-based catalysts. The GMC-900 obtained by using pollution-free soybean oil as a carbon source exhibited enhanced catalytic performance when loaded with Co species. Co/GMC-900 was found to be an effective catalyst with superior C5+ selectivity in Fischer-Tropsch synthesis.
FRONTIERS IN CHEMISTRY
(2022)
Article
Chemistry, Physical
Erling Rytter, Anders Runningen, Edd Blekkan, Magne Hillestad
Summary: The paper presents the development of a mechanism and rate expression for Fischer-Tropsch synthesis over cobalt-based catalysts. The mechanism involves a two-step hydrogen assisted activation of CO and incorporates the influence of water partial pressure on the reaction rate. The resulting kinetic model is tested on various cobalt catalysts and accurately describes the observed CO conversions and selectivities.
MOLECULAR CATALYSIS
(2022)
Article
Energy & Fuels
Lei Li, Yan Liu, Junfeng Zhang, Ming Xia, Weijie Ji
Summary: This study proposes a Metal-Organic Frameworks (MOFs) strategy for the manufacture of highly dispersed supported catalyst, and successfully prepares CoOx/SiO2 catalyst with superior activity and stability. The results show that the high dispersion of Co metal active sites and the increased number of surface-exposed Co sites contribute to the improved catalytic activity. In addition, the sacrificial MOFs strategy can effectively restrain the growth of cobalt particles, achieving the goal of high dispersion.
Article
Engineering, Chemical
Janardhan L. Hodala, Yajnavalkya S. Bhat, Anand B. Halgeri, Ganapati V. Shanbhag
CHEMICAL ENGINEERING SCIENCE
(2015)
Article
Energy & Fuels
Janardhan L. Hodala, Jae-Sun Jung, Eun-Hyeok Yang, Gi Hoon Hong, Young Su Noh, Dong Ju Moon
Article
Chemistry, Multidisciplinary
Janardhan L. Hodala, Jae-Sun Jung, Eun-Hyeok Yang, Gi Hoon Hong, Young Su Noh, Dong Ju Moon
RESEARCH ON CHEMICAL INTERMEDIATES
(2017)
Article
Chemistry, Multidisciplinary
Janardhan L. Hodala, Anand B. Halgeri, Ganapati V. Shanbhag
Article
Chemistry, Multidisciplinary
Jae-Sun Jung, Gi Hoon Hong, Ji In Park, Eun-Hyeok Yang, Janardhan L. Hodala, Dong Ju Moon
Article
Chemistry, Multidisciplinary
Janardhan L. Hodala, Anand B. Halgeri, Ganapati V. Shanbhag, R. Sudarshan Reddy, Nettem V. Choudary, Peddy V. C. Rao, Gandham SriGanesh, Gitesh Shah, Raman Ravishankar
Article
Chemistry, Inorganic & Nuclear
Swetha S. M. Bhat, Diptikanta Swain, Mikhail Feygenson, Joerg C. Neuefeind, Abhishek K. Mishra, Janardhan L. Hodala, Chandrabhas Narayana, Ganapati V. Shanbhag, Nalini G. Sundaram
INORGANIC CHEMISTRY
(2017)
Article
Chemistry, Physical
H. L. Janardhan, G. V. Shanbhag, A. B. Halgeri
APPLIED CATALYSIS A-GENERAL
(2014)
Article
Chemistry, Physical
Janardhan L. Hodala, Anand B. Halgeri, Ganapati V. Shanbhag
APPLIED CATALYSIS A-GENERAL
(2014)
Article
Chemistry, Physical
Janardhan L. Hodala, Dong J. Moon, Kakarla Raghava Reddy, Ch Venkata Reddy, T. Naveen Kumar, Mohd Imran Ahamed, Anjanapura V. Raghu
Summary: The FT process has great potential for energy security and utilizing greenhouse gases. The formation of hydrocarbons in the process can be controlled by catalyst selection and active metal support interactions. The ratio of syn-gas is crucial for desired conversion and selectivity towards C5+ products, with support playing a significant role in product distribution and CO conversion.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Janardhan L. Hodala, Kotni Santhosh, B. Ramachandrarao, Bennet Chelliahn
Summary: This study explores non-precious metal carbide materials as alternatives to Pt for catalytic reforming, supported on non-chlorinated solid acidic zeolites. Mo2C supported on HY zeolite was found to be an active catalyst, producing aromatics at 50 wt%, RON of 96, and maintaining high reformate yields around 91 wt%.
