Effect of Cu content on the bifunctional Fischer–Tropsch Fe–Cu–K/ZSM5 catalyst

Bae, Jong Wook; Park, Seon-Ju; Kang, Suk-Hwan; Lee, Yun-Jo; Jun, Ki‐Won; Rhee, Young‐Woo

doi:10.1016/j.jiec.2009.09.002

Cited by 33 publications

(32 citation statements)

References 28 publications

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“…Furthermore, since the acidic sites on ZSM5 component could help to enhance C 2 -C 4 selectivity by the presence of olefin cracking activity of FTS products reported by our previous work [11], the selection of appropriate ZSM5 components (Si/Al = 25) on the iron-based Fischer-Tropsch catalyst is adopted in the present investigation to obtain high catalytic performance. The optimum weight ratio of Fe/Cu is found to be around 1/0.1 on bifunctional catalyst containing ZSM5 and the increase of K component in the coprecipitated iron-based FTS catalyst are mainly responsible for the enhanced olefin selectivity as reported in our previous works [7,8].…”

Section: Introductionsupporting

confidence: 68%

“…In 40FeZ catalyst, the a-Fe 2 O 3 lines are prominent with weak evidence for characteristic peaks of ZSM5. The observed fact that the intensity of characteristic lines of ZSM5 decreases can be explained by dilution effect of active component as well as loss of crystallinity of ZSM5 structure, and the latter being more likely due to the acidic preparation conditions [6][7][8][9][10]. It is interesting to discuss about lines near 2h = 9°in ZSM5 diffraction patterns.…”

Section: Xrd Studies Of Fe-cu-k/zsm5 Catalystsmentioning

confidence: 96%

“…As generally expected, both peaks increase in intensity with the increase of active component concentration. The increase in peak intensity can be attributed to the increased promotional effect of copper during reduction step and copper is a well known active component on ironbased FTS catalysts and its role is believed to increase the degree of reduction of iron oxides [7,8]. In general, the patterns of multiple peaks indicate the presence of heterogeneous distribution of active species with a different reducibility due to the interaction with acidic zeolite component as well as the interaction of Fe-Cu-K components themselves [17,18].…”

Section: Temperature-programmed Reduction By H 2 (H 2 -Tpr)mentioning

confidence: 99%

“…In the development of iron-based catalyst, various preparation parameters such as the composition of active components, the nature of active metal precursors, the amount and characteristics of promoters such as K and Cu, the nature of acidic components such as ZSM-5 added, pH of precipitation and temperatures and calcination temperature of finished catalyst and so on need to be optimized to meet the production of targeted products from FTS reaction. On the optimized catalyst, the optimization of reaction parameters such as H 2 /CO molar ratio, temperature, space velocity etc have been intensively investigated to find out optimum reaction variables using iron-based catalyst [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…In the previous investigation, we have also reported the detailed studies on Fe-Cu-K/zeolites FTS catalysts with respect to its effects on reducibility, active phase formation such as surface carbides and its influence on catalyst performance such as CO conversion, water gas shift (WGS) activity and product distribution [6][7][8][9][10]. Furthermore, since the acidic sites on ZSM5 component could help to enhance C 2 -C 4 selectivity by the presence of olefin cracking activity of FTS products reported by our previous work [11], the selection of appropriate ZSM5 components (Si/Al = 25) on the iron-based Fischer-Tropsch catalyst is adopted in the present investigation to obtain high catalytic performance.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Active Component Contents to Catalytic Performance on Fe-Cu-K/ZSM5 Fischer-Tropsch Catalyst

et al. 2009

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Fischer-Tropsch Synthesis (FTS) on Fe-Cu-K/ ZSM5 catalysts prepared by varying the amount of active components for a given amount of ZSM5 has been investigated to elucidate the effects of iron concentration. The catalysts were prepared by conventional wet impregnation method using ZSM5 and subsequently calcined at 500°C for 5 h. The different catalytic performance is verified by the variation of microporosity such as surface area and pore size distribution of Fe-Cu-K/ZSM5, acidity, reducibility of active phases and the presence of various crystalline phases like a-Fe 2 O 3 , metallic iron and iron carbide. The characterization results are analyzed along with catalytic performance to arrive at optimum amount of active components and to obtain maximum selectivity of FTS products with high conversion of CO during FTS reaction.

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Section: Introductionsupporting

confidence: 68%

Section: Xrd Studies Of Fe-cu-k/zsm5 Catalystsmentioning

confidence: 96%

Section: Temperature-programmed Reduction By H 2 (H 2 -Tpr)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Active Component Contents to Catalytic Performance on Fe-Cu-K/ZSM5 Fischer-Tropsch Catalyst

et al. 2009

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Exploring Iron‐based Multifunctional Catalysts for Fischer–Tropsch Synthesis: A Review

2011

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The continuous increase in oil prices together with an increase in carbon dioxide concentration in the atmosphere has prompted an increased interest in the production of liquid fuels from non-petroleum sources to ensure the continuation of our worldwide demands while maximizing CO(2) utilization. In this sense, the Fischer-Tropsch (FT) technology provides a feasible option to render high value-added hydrocarbons. Alternative sources, such as biomass or coal, offer a real possibility to realize these purposes by making use of H(2)-deficient or CO(2)-rich syngas feeds. The management of such feeds ideally relies on the use of iron catalysts, which exhibit the unique ability to adjust the H(2)/CO molar ratio to an optimum value for hydrocarbon synthesis through the water-gas-shift reaction. Taking advantage of the emerging attention to hybrid FT-synthesis catalysts based on cobalt and their associated benefits, an overview of the current state of literature in the field of iron-based multifunctional catalysts is presented. Of particular interest is the use of zeolites in combination with a FT catalyst in a one-stage operation, herein named multifunctional, which offer key opportunities in the modification of desired product distributions and selectivity, to eventually overcome the quality limitations of the fuels prepared under intrinsic FT conditions. This review focuses on promising research activities addressing the conversion of syngas to liquid fuels mediated by iron-based multifunctional materials, highlights their preparation and properties, and discusses their implication and challenges in the area of carbon utilization through H(2)/CO(+CO(2)) mixtures.

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Optimization of reaction parameters of Fischer–Tropsch synthesis in the presence of Co‐V/Al₂O₃ nano‐catalyst

Hafizi

Koolivand‐Salooki²,

Esfandyari

et al. 2022

Int J of Chemical Kinetics

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Nano-catalyst of cobalt-vanadate (Co-V/Al 2 O 3 , supported on alumina) application in Fischer-Tropsch process (FT) was explored in a various conversions of synthesis gas. The catalyst characterization was performed using different methods including Brunauer-Emmett-Teller (BET) surface area, X-ray fluorescence (XRF), X-ray diffraction (XRD), Temperature programmed reduction (TPR) profile, and Transmission electron microscopy (TEM). Due to the extreme complexity and nonlinearity of catalytic processes, adaptive network based fuzzy interface system (ANFIS) was developed as a predictive tool for evaluation of Co-V/Al 2 O 3 nano-catalyst performance in FT process. Input vector included reaction condition such as, pressure, temperature, time, and CO/H 2 ratio of different experiments while the outputs were composition of CO, CO 2 , and CH 4 . The proposed model was used for optimization of the process, also the optimal operating conditions were acquired using particle swarm optimization (PSO). The performance of the algorithms and the quality of the solutions were measured by introducing the optimal operating conditions to obtained model. Comparative studies and results analysis were then conducted on the optimization results. The model result shows a good consistency with experimental observations.

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Effect of Cu content on the bifunctional Fischer–Tropsch Fe–Cu–K/ZSM5 catalyst

Cited by 33 publications

References 28 publications

Effect of Active Component Contents to Catalytic Performance on Fe-Cu-K/ZSM5 Fischer-Tropsch Catalyst

Effect of Active Component Contents to Catalytic Performance on Fe-Cu-K/ZSM5 Fischer-Tropsch Catalyst

Exploring Iron‐based Multifunctional Catalysts for Fischer–Tropsch Synthesis: A Review

Optimization of reaction parameters of Fischer–Tropsch synthesis in the presence of Co‐V/Al₂O₃ nano‐catalyst

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Effect of Cu content on the bifunctional Fischer–Tropsch Fe–Cu–K/ZSM5 catalyst

Cited by 33 publications

References 28 publications

Effect of Active Component Contents to Catalytic Performance on Fe-Cu-K/ZSM5 Fischer-Tropsch Catalyst

Effect of Active Component Contents to Catalytic Performance on Fe-Cu-K/ZSM5 Fischer-Tropsch Catalyst

Exploring Iron‐based Multifunctional Catalysts for Fischer–Tropsch Synthesis: A Review

Optimization of reaction parameters of Fischer–Tropsch synthesis in the presence of Co‐V/Al2O3 nano‐catalyst

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Optimization of reaction parameters of Fischer–Tropsch synthesis in the presence of Co‐V/Al₂O₃ nano‐catalyst