Rational design of hierarchical zeolite encapsulating FeMnK architecture to enhance light olefins selectivity in Fischer-Tropsch synthesis

Fuel ◽  
2022 ◽  
Vol 309 ◽  
pp. 122075
Author(s):  
Can Zhu ◽  
Chao Huang ◽  
Mingwei Zhang ◽  
Yizhuo Han ◽  
Kegong Fang
Keyword(s):  
Rational Design ◽  
Tropsch Synthesis ◽  
Light Olefins ◽  
Fischer Tropsch ◽  
Hierarchical Zeolite ◽  
Fischer Tropsch Synthesis ◽  
Light Olefins Selectivity

A Hydrophilic Supported Fe 3 O 4 Catalyst with Enhanced Light Olefins Selectivity in the Fischer‐Tropsch Synthesis

2021 ◽  
Vol 6 (34) ◽  
pp. 9293-9299
Author(s):  
Long Ma ◽  
Yuxi Zhang ◽  
Xinhua Gao ◽  
Thachapan Atchimarungsri ◽  
Qingxiang Ma ◽  
...  
Keyword(s):  
Tropsch Synthesis ◽  
Light Olefins ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Light Olefins Selectivity

scholarly journals Enhancement of Light Olefins Selectivity Over N-Doped Fischer-Tropsch Synthesis Catalyst Supported on Activated Carbon Pretreated with KMnO4

Catalysts ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 505
Author(s):  
Zhipeng Tian ◽  
Chenguang Wang ◽  
Zhan Si ◽  
Chengyan Wen ◽  
Ying Xu ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Carbon Support ◽  
Tropsch Synthesis ◽  
Light Olefins ◽  
Molar Ratio ◽  
Iron Nitride ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Suppression Effect ◽  
Light Olefins Selectivity

Ammonium iron citrate was used as an iron precursor in order to prepare N-doped catalysts supported on KMnO4 pretreated activated carbon (10MnK-AC). Iron nitride was synthesized in company with the formation of α-Fe2O3 on 10MnK-AC. The characterizations of the catalysts show that nitrogen atoms were doped into iron lattice rather than the networks of the carbon support. The performance of Fischer-Tropsch synthesis to light olefins (FTO) suggest an improvement in O/P ratio (olefins to paraffins molar ratio of C2–C4) over the iron catalysts supported on 10MnK-AC. The further promotion of light olefins selectivity (up to 44.7%) was obtained over FeN-10MnK-AC catalyst owing to the collaborative contribution of the electron donor effect of nitrogen and the suppression effect on the second hydrogenation over 10MnK-AC support.

scholarly journals A Modeling Study of Operating Conditions and Different Supports on Fe-Co-Ce Nanocatalyst and Optimizing of Light Olefins Selectivity in the Fischer-Tropsch Synthesis

2021 ◽  
Vol 15 (2) ◽  
pp. 170-182
Author(s):  
Tahereh Taherzadeh Lari ◽  
◽  
Ali Akbar Mirzaei ◽  
Hossein Atashi ◽  
Hamid Reza Bozorgzadeh ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Statistical Model ◽  
Response Surface ◽  
Operating Conditions ◽  
Tropsch Synthesis ◽  
Light Olefins ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Light Olefins Selectivity ◽  
Higher Olefins

This study demonstrates the effect of operating conditions (Red-GHSV, inlet H2/CO, Oprat-GHSV) and the effect of Fe-Co-Ce nanocatalyst support. A statistical model using the response surface methodology (RSM) was applied with the target of achieving higher olefins selectivity in Fischer-Tropsch synthesis, which indicates the interaction effects of factors. The conditions under which three objectives optimization for maximizing olefins and minimizing paraffins and methane were determined. Synthesized nanocatalysts with various supports were characterized by XRD, SEM and TPR techniques

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 Fischer-Tropsch synthesis for light olefins using iron carbonyl-alkali metal hydroxide/zeolite systems as catalyst precursors.

1988 ◽  
Vol 31 (1) ◽  
pp. 62-70
Author(s):  
Take-aki MITSUDO ◽  
Yukiatsu KOMIYA ◽  
Hideki BOKU ◽  
Atsushi ISHIHARA ◽  
Satoshi MURACHI ◽  
...  
Keyword(s):  
Alkali Metal ◽  
Alkali Metal Hydroxide ◽  
Iron Carbonyl ◽  
Metal Hydroxide ◽  
Tropsch Synthesis ◽  
Light Olefins ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis

High-Temperature Fischer–Tropsch Synthesis of Light Olefins over Nano-Fe3O4@MnO2 Core–Shell Catalysts

2019 ◽  
Vol 58 (47) ◽  
pp. 21350-21362 ◽  
Author(s):  
Xian Wu ◽  
Hongfang Ma ◽  
Haitao Zhang ◽  
Weixin Qian ◽  
Dianhua Liu ◽  
...  
Keyword(s):  
High Temperature ◽  
Tropsch Synthesis ◽  
Light Olefins ◽  
Core Shell ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Nano Fe3o4

Fischer–Tropsch synthesis over the Fe–Mn/Al2O3 catalyst: modeling and optimization of light olefins using the RSM method

2020 ◽  
Vol 44 (42) ◽  
pp. 18457-18468
Author(s):  
Maryam Arsalanfar
Keyword(s):  
Chemical Properties ◽  
Catalytic Performance ◽  
Tropsch Synthesis ◽  
Light Olefins ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Modeling And Optimization ◽  
Physico Chemical ◽  
Al2o3 Catalyst

The effect of various preparation parameters on the catalytic performance and physico-chemical properties of a supported Fe–Mn catalyst was investigated using the RSM method.

The effect of pore size or iron particle size on the formation of light olefins in Fischer–Tropsch synthesis

RSC Advances ◽  
2015 ◽  
Vol 5 (37) ◽  
pp. 29002-29007 ◽  
Author(s):  
Yi Liu ◽  
Jian-Feng Chen ◽  
Yi Zhang
Keyword(s):  
Particle Size ◽  
Pore Size ◽  
Carbide Particle ◽  
Iron Carbide ◽  
Iron Particle ◽  
Tropsch Synthesis ◽  
Light Olefins ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis

Smaller iron or iron carbide particle was advantageous to form more light olefins and O/P of C2–C4 was more sensitive to pore size of catalysts.

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