Chemical Insights into the Design and Development of Face-Centered Cubic Ruthenium Catalysts for Fischer–Tropsch Synthesis

2017 ◽  
Vol 139 (6) ◽  
pp. 2267-2276 ◽  
Author(s):  
Wei-Zhen Li ◽  
Jin-Xun Liu ◽  
Jun Gu ◽  
Wu Zhou ◽  
Si-Yu Yao ◽  
...  
Keyword(s):  
Ruthenium Catalysts ◽  
Tropsch Synthesis ◽  
Face Centered Cubic ◽  
Design And Development ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Face Centered

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 Effects of metallic cobalt crystal phase on catalytic activity of cobalt catalysts supported on carbon nanotubes in Fischer–Tropsch synthesis

2019 ◽  
Vol 44 (4) ◽  
pp. 316-323 ◽  
Author(s):  
Ali Nakhaei Pour ◽  
Mohammadreza Housaindokht
Keyword(s):  
Catalytic Activity ◽  
Cobalt Catalysts ◽  
Crystal Phase ◽  
Microemulsion System ◽  
Face Centered Cubic ◽  
Metallic Cobalt ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Hexagonal Close Packed ◽  
Face Centered

The effects of metallic cobalt crystal phase on catalytic activity of cobalt catalysts in the Fischer–Tropsch synthesis were investigated in a continuous spinning basket reactor. The cobalt catalysts were prepared by impregnation of the cobalt active phase in a microemulsion system on multiwall carbon nanotube supports. A series of cobalt catalysts with different Co particle sizes was prepared by variation of the water-to-surfactant molar ratio from 2 to 12 in the microemulsion system. The X-ray diffraction results validate a complex composition of cobalt phases containing cobalt oxides and metallic cobalt with hexagonal close-packed and face-centered cubic phases. The results show that larger cobalt particles exhibit more face-centered cubic and less hexagonal close-packed metallic cobalt. The experimental results show that the catalysts with higher fractions of hexagonal close-packed phase exhibited higher conversion in the Fischer–Tropsch reaction.

Mechanistic Role of Water on the Rate and Selectivity of Fischer-Tropsch Synthesis on Ruthenium Catalysts

2013 ◽  
Vol 52 (47) ◽  
pp. 12273-12278 ◽  
Author(s):  
David D. Hibbitts ◽  
Brett T. Loveless ◽  
Matthew Neurock ◽  
Enrique Iglesia
Keyword(s):  
Ruthenium Catalysts ◽  
Tropsch Synthesis ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis

Fischer-tropsch synthesis over titania-supported ruthenium catalysts

1984 ◽  
Vol 10 (2) ◽  
pp. 251-260 ◽  
Author(s):  
E. Kikuchi ◽  
M. Matsumoto ◽  
T. Takahashi ◽  
A. Machino ◽  
Y. Morita
Keyword(s):  
Ruthenium Catalysts ◽  
Tropsch Synthesis ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis
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