Improvement of the Fischer–Tropsch Synthesis Activity of Co/SiO2 Catalyst by the Stepwise Impregnation Method with Chelating Agents

2007 ◽  
Vol 121 (1-2) ◽  
pp. 52-57 ◽  
Author(s):  
Takehisa Mochizuki ◽  
Daichi Hongo ◽  
Takuya Satoh ◽  
Naoto Koizumi ◽  
Muneyoshi Yamada
Keyword(s):  
Chelating Agents ◽  
Tropsch Synthesis ◽  
Impregnation Method ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Synthesis Activity

Enhancing the Fischer–Tropsch Synthesis Activity of Co-based Catalysts by Adding ZrO x to the SiO2 Support and Chelating Ligands to the Co-precursor

2011 ◽  
Vol 141 (8) ◽  
pp. 1207-1214
Author(s):  
Naoto Koizumi ◽  
Yasuhiko Hayasaka ◽  
Yukiya Ibi ◽  
Shigenobu Suzuki ◽  
Takayoshi Shindo ◽  
...  
Keyword(s):  
Tropsch Synthesis ◽  
Chelating Ligands ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Synthesis Activity ◽  
Sio2 Support

Fischer-Tropsch Synthesis: Activity and Selectivity of χ-Fe5C2 and θ-Fe3C Carbides

2016 ◽  
pp. 15-30 ◽  
Author(s):  
Muthu Gnanamani ◽  
Hussein Hamdeh ◽  
Gary Jacobs ◽  
Wilson Shafer ◽  
Dennis Sparks ◽  
...  
Keyword(s):  
Tropsch Synthesis ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Synthesis Activity

Fischer−Tropsch synthesis: activity and selectivity for Group I alkali promoted iron-based catalysts

2002 ◽  
Vol 236 (1-2) ◽  
pp. 77-89 ◽  
Author(s):  
Wilfried Ngantsoue-Hoc ◽  
Yongqing Zhang ◽  
Robert J O’Brien ◽  
Mingsheng Luo ◽  
Burtron H Davis
Keyword(s):  
Tropsch Synthesis ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Group I ◽  
Synthesis Activity ◽  
Iron Based ◽  
Iron Based Catalysts

scholarly journals Intrinsic Kinetics of Fischer–Tropsch Synthesis over Co/CNTs Catalysts: Effects of Support Interaction

2018 ◽  
Vol 43 (3-4) ◽  
pp. 262-273
Author(s):  
Behnam Hatami ◽  
Ahmad Tavasoli ◽  
Alireza Asghari ◽  
Yahya Zamani ◽  
Akbar Zamaniyan
Keyword(s):  
Carbon Nanotubes ◽  
Hydrogen Adsorption ◽  
Catalyst Support ◽  
Spillover Effect ◽  
Tropsch Synthesis ◽  
Cobalt Catalysts ◽  
High Dispersion ◽  
Impregnation Method ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis

The activities of cobalt catalysts prepared by the microemulsion impregnation method on carbon nanotubes (CNTs) and functionalised carbon nanotubes (FCNTs) supports were evaluated in the Fischer–Tropsch synthesis (FTS). The catalysts were characterised by transmission electron microscopy, X-ray diffraction and Brunauer–Emmett–Teller surface area methods. The results show that the cobalt particles in the FCNTs support are mostly located inside the tubes of the CNTs and show a narrower particle size distribution. The experimental results show that the cobalt catalyst supported on FCNTs leads to a higher CO conversion and FTS activity compared to that supported on normal CNTs. Calculated kinetic results show that the activation energies fall within the narrow range of 101.1–107.1 kJ mol−1 and the heat of hydrogen adsorption was calculated to be −40.2 and −26.2 kJ mol−1 for Co/CNTs and Co/FCNTs catalysts respectively. FCNTs, as a catalyst support of Co nanoparticles, maintain high dispersion which can be attributed to a hydrogen spillover effect of functional groups on the CNT surface.

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