Effect of Process Conditions on Olefin Selectivity during Conventional and Supercritical Fischer−Tropsch Synthesis

1997 ◽  
Vol 36 (7) ◽  
pp. 2580-2587 ◽  
Author(s):  
Dragomir B. Bukur ◽  
Xiaosu Lang ◽  
Aydin Akgerman ◽  
Zhentao Feng
Keyword(s):  
Tropsch Synthesis ◽  
Process Conditions ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Olefin Selectivity

α-olefin selectivity of Fe–Cu–K catalysts in Fischer–Tropsch synthesis: Effects of catalyst composition and process conditions

2012 ◽  
Vol 181-182 ◽  
pp. 581-589 ◽  
Author(s):  
Şeyma Özkara-Aydınoğlu ◽  
Özlem Ataç ◽  
Ömer F. Gül ◽  
Şölen Kınayyiğit ◽  
Sinan Şal ◽  
...  
Keyword(s):  
Tropsch Synthesis ◽  
Process Conditions ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Catalyst Composition ◽  
Olefin Selectivity

scholarly journals Fischer–Tropsch Synthesis for Light Olefins from Syngas: A Review of Catalyst Development

Reactions ◽  
2021 ◽  
Vol 2 (3) ◽  
pp. 227-257
Author(s):  
Arash Yahyazadeh ◽  
Ajay K. Dalai ◽  
Wenping Ma ◽  
Lifeng Zhang
Keyword(s):  
Pore Size ◽  
Crystal Size ◽  
Tropsch Synthesis ◽  
Light Olefins ◽  
Face Centered Cubic ◽  
Fischer Tropsch ◽  
Light Olefin ◽  
Structure Transition ◽  
Fischer Tropsch Synthesis ◽  
Olefin Selectivity

Light olefins as one the most important building blocks in chemical industry can be produced via Fischer–Tropsch synthesis (FTS) from syngas. FT synthesis conducted at high temperature would lead to light paraffins, carbon dioxide, methane, and C5+ longer chain hydrocarbons. The present work focuses on providing a critical review on the light olefin production using Fischer–Tropsch synthesis. The effects of metals, promoters and supports as the most influential parameters on the catalytic performance of catalysts are discussed meticulously. Fe and Co as the main active metals in FT catalysts are investigated in terms of pore size, crystal size, and crystal phase for obtaining desirable light olefin selectivity. Larger pore size of Fe-based catalysts is suggested to increase olefin selectivity via suppressing 1-olefin readsorption and secondary reactions. Iron carbide as the most probable phase of Fe-based catalysts is proposed for light olefin generation via FTS. Smaller crystal size of Co active metal leads to higher olefin selectivity. Hexagonal close-packed (HCP) structure of Co has higher FTS activity than face-centered cubic (FCC) structure. Transition from Co to Co3C is mainly proposed for formation of light olefins over Co-based catalysts. Moreover, various catalysts’ deactivation routes are reviewed. Additionally, techno-economic assessment of FTS plants in terms of different costs including capital expenditure and minimum fuel selling price are presented based on the most recent literature. Finally, the potential for global environmental impacts associated with FTS plants including atmospheric and toxicological impacts is considered via lifecycle assessment (LCA).

scholarly journals Effect of Pressure, H2/CO Ratio and Reduction Conditions on Co–Mn/CNT Bimetallic Catalyst Performance in Fischer–Tropsch Reaction

Symmetry ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 698
Author(s):  
Omid Akbarzadeh ◽  
Noor Asmawati Mohd Zabidi ◽  
Guangxin Wang ◽  
Amir Kordijazi ◽  
Hamed Sadabadi ◽  
...  
Keyword(s):  
Performance Test ◽  
Bimetallic Catalyst ◽  
Fixed Bed ◽  
Tropsch Synthesis ◽  
Process Conditions ◽  
Gravimetric Analysis ◽  
Product Analysis ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Strong Electrostatic Adsorption

The effects of process conditions on Fischer–Tropsch Synthesis (FTS) product distributions were studied using a fixed-bed microreactor and a Co–Mn/CNT catalyst. Cobalt and Manganese, supported on Carbon Nanotubes (CNT) catalyst were prepared by a Strong Electrostatic Adsorption (SEA) method. CNT supports were initially acid and thermally treated in order to functionalize support to uptake more Co clusters. Catalyst samples were characterized by Transmitted Electron Microscope (TEM), particle size analyzer, and Thermal Gravimetric Analysis (TGA). TEM images showed catalyst metal particle intake on CNT support with different Co and Mn loading percentage. Performance test of Co–Mn/CNT in Fischer–Tropsch synthesis (FTS) was carried out in a fixed-bed micro-reactor at different pressures (from 1 atm to 25 atm), H2/CO ratio (0.5–2.5), and reduction temperature and duration. The reactor was connected to the online Gas Chromatograph (GC) for product analysis. It was found that the reaction conditions have the dominant effect on product selectivity. Cobalt catalyst supported on acid and thermal pre-treated CNT at optimum reaction condition resulted in CO conversion of 58.7% and C5+ selectivity of 59.1%.

An Object-Oriented Graphics Interface Simulator for Analysis of Fischer-Tropsch Synthesis

2010 ◽  
Vol 5 (1) ◽  
Author(s):  
Fabiano A. N. Fernandes ◽  
Samuel J. M. Cartaxo
Keyword(s):  
Product Distribution ◽  
Tropsch Synthesis ◽  
Parameter Analysis ◽  
Process Conditions ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Operating Process ◽  
Visualization Tools ◽  
Conducting Research ◽  
Typical Scenario

This paper describes a computer program that increases the productivity of petrochemical scientists conducting research on Fischer-Tropsch synthesis. FTSlurry integrates Fortran 90 simulation codes with a graphical front end and various visualization tools developed in Delphi. The software serves to evaluate operating process conditions and reaction kinetics on the product distribution of Fischer-Tropsch synthesis carried out on slurry reactors. The software allows for full parameter analysis and study of factor effects. A detailed description of the system architecture and a typical scenario of usage are presented, along with parameter analysis and visualization features.

scholarly journals Olefine Production from Syngas over Bimetallic Supported

2016 ◽  
Vol 2 (1) ◽  
pp. 75 ◽  
Author(s):  
Sh.S. Itkulova ◽  
G.D. Zakumbaeva
Keyword(s):  
Catalytic Activity ◽  
Space Velocity ◽  
Tropsch Synthesis ◽  
Nano Particles ◽  
Process Conditions ◽  
High Catalytic Activity ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
High Olefin ◽  
Cluster Type

<p>Bimetallic cobalt-containing catalysts supported on alumina have been studied in the Fischer-Tropsch synthesis. It has been shown that a promotion of Co/Al<sub>2</sub>O<sub>3</sub> by iridium leads to dispergation of both metals. It was supposed that the metal dispergation occurred due to M-M interaction with formation of the bimetallic nano-particles of cluster type. These particles have the high catalytic activity, selectivity and stability in the Fischer-Tropsch synthesis. It was observed that by regulation of the process conditions it is possible to obtain the definite hydrocarbon fractions. Thus, the increase both CO+H<sub>2</sub> ratio and space velocity is accompanied by high olefin yield.</p>

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