The role of carbon atoms of supported iron carbides in Fischer–Tropsch synthesis

2015 ◽  
Vol 5 (3) ◽  
pp. 1433-1437 ◽  
Author(s):  
V. V. Ordomsky ◽  
B. Legras ◽  
K. Cheng ◽  
S. Paul ◽  
A. Y. Khodakov
Keyword(s):  
Reaction Rate ◽  
Iron Carbide ◽  
High Reactivity ◽  
Tropsch Synthesis ◽  
Chain Growth ◽  
Fischer Tropsch ◽  
Iron Carbides ◽  
Fischer Tropsch Synthesis ◽  
Supported Iron

High reactivity of iron carbides enhances the Fischer–Tropsch reaction rate on supported iron catalysts. Carbon atoms in iron carbide are involved in the initiation of chain growth in Fischer–Tropsch synthesis.

scholarly journals Preparation of Iron Carbides Formed by Iron Oxalate Carburization for Fischer–Tropsch Synthesis

Catalysts ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 347
Author(s):  
Yang ◽  
Zhang ◽  
Liu ◽  
Ning ◽  
Han ◽  
...  
Keyword(s):  
Iron Carbide ◽  
Carbon Layer ◽  
Tropsch Synthesis ◽  
Light Olefins ◽  
Fischer Tropsch ◽  
Iron Carbides ◽  
Oxalate Precursor ◽  
Fischer Tropsch Synthesis ◽  
Iron Oxalate ◽  
In Situ Activation

Different iron carbides were synthesized from the iron oxalate precursor by varying the CO carburization temperature between 320 and 450 °C. These iron carbides were applied to the high-temperature Fischer–Tropsch synthesis (FTS) without in situ activation treatment directly. The iron oxalate as a precursor was prepared using a solid-state reaction treatment at room temperature. Pure Fe5C2 was formed at a carburization temperature of 320 C, whereas pure Fe3C was formed at 450 °C. Interestingly, at intermediate carburization temperatures (350–375 °C), these two phases coexisted at the same time although in different proportions, and 360 °C was the transition temperature at which the iron carbide phase transformed from the Fe5C2 phase to the Fe3C phase. The results showed that CO conversions and products selectivity were affected by both the iron carbide phases and the surface carbon layer. CO conversion was higher (75–96%) when Fe5C2 was the dominant iron carbide. The selectivity to C5+ products was higher when Fe3C was alone, while the light olefins selectivity was higher when the two components (Fe5C2 and Fe3C phases) co-existed, but the quantity of Fe3C was small.

A possible role of paramagnetic states of iron carbides in the fischer–tropsch synthesis selectivity of nanosized slurry catalysts

2019 ◽  
Vol 380 ◽  
pp. 32-42 ◽  
Author(s):  
A.E. Kuz'min ◽  
D.A. Pichugina ◽  
M.V. Kulikova ◽  
O.S. Dement'eva ◽  
N.A. Nikitina ◽  
...  
Keyword(s):  
Tropsch Synthesis ◽  
Fischer Tropsch ◽  
Iron Carbides ◽  
Fischer Tropsch Synthesis

Role of CO2 in the initiation of chain growth and alcohol formation during the Fischer-Tropsch synthesis

1997 ◽  
Vol 36 (3) ◽  
pp. 347-355 ◽  
Author(s):  
Liguang Xu ◽  
Shiqi Bao ◽  
Deborah J. Houpt ◽  
Scott H. Lambert ◽  
Burtron H. Davis
Keyword(s):  
Tropsch Synthesis ◽  
Chain Growth ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Alcohol Formation

scholarly journals Back Cover: Selective Formation of Hägg Iron Carbide with g-C3 N4 as a Sacrificial Support for Highly Active Fischer-Tropsch Synthesis (ChemCatChem 21/2015)

ChemCatChem ◽  
2015 ◽  
Vol 7 (21) ◽  
pp. 3594-3594
Author(s):  
Hunmin Park ◽  
Duck Hyun Youn ◽  
Jae Young Kim ◽  
Won Yong Kim ◽  
Yo Han Choi ◽  
...  
Keyword(s):  
Iron Carbide ◽  
Tropsch Synthesis ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Back Cover ◽  
Highly Active ◽  
Selective Formation
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