Evolution of cobalt species in glow discharge plasma prepared CoRu/SiO2 catalysts with enhanced Fischer-Tropsch synthesis performance

2019 ◽  
Vol 374 ◽  
pp. 246-256 ◽  
Author(s):  
Shan Gao ◽  
Jingping Hong ◽  
Guiqin Xiao ◽  
Sufang Chen ◽  
Yuhua Zhang ◽  
...  
Keyword(s):  
Glow Discharge ◽  
Discharge Plasma ◽  
Tropsch Synthesis ◽  
Glow Discharge Plasma ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Cobalt Species

Glow-Discharge Plasma-Assisted Design of Cobalt Catalysts for Fischer-Tropsch Synthesis

2008 ◽  
Vol 120 (27) ◽  
pp. 5130-5133 ◽  
Author(s):  
Wei Chu ◽  
Li-Nan Wang ◽  
Petr A. Chernavskii ◽  
Andrei Y. Khodakov
Keyword(s):  
Glow Discharge ◽  
Discharge Plasma ◽  
Tropsch Synthesis ◽  
Cobalt Catalysts ◽  
Glow Discharge Plasma ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis

Cobalt species and cobalt-support interaction in glow discharge plasma-assisted Fischer–Tropsch catalysts

2010 ◽  
Vol 273 (1) ◽  
pp. 9-17 ◽  
Author(s):  
Jingping Hong ◽  
Wei Chu ◽  
Petr A. Chernavskii ◽  
Andrei Y. Khodakov
Keyword(s):  
Glow Discharge ◽  
Discharge Plasma ◽  
Glow Discharge Plasma ◽  
Fischer Tropsch ◽  
Support Interaction ◽  
Cobalt Species

Promotion effects of plasma treatment on silica supports and catalyst precursors for cobalt Fischer–Tropsch catalysts

RSC Advances ◽  
2016 ◽  
Vol 6 (62) ◽  
pp. 57701-57708 ◽  
Author(s):  
Chen Liu ◽  
Jiaping Lan ◽  
Fenglou Sun ◽  
Yuhua Zhang ◽  
Jinlin Li ◽  
...  
Keyword(s):  
Glow Discharge ◽  
Plasma Treatment ◽  
Discharge Plasma ◽  
Glow Discharge Plasma ◽  
Fischer Tropsch ◽  
Surface Hydrophilicity ◽  
Silica Supports

Glow discharge plasma would modify the surface hydrophilicity of support; the plasma treated catalysts showed much higher FTS activity.

Effects of Different Pretreatment Pressures on the Catalytic Performance of Catalyst Derived from (CO)6Co2CC(COOH)2 for Fischer-Tropsch Synthesis

2013 ◽  
Vol 781-784 ◽  
pp. 186-189
Author(s):  
Yin Yan Wang ◽  
Feng Hua Bai ◽  
Ang Li ◽  
Bo Zhao ◽  
Hai Quan Su
Keyword(s):  
Catalytic Performance ◽  
Tropsch Synthesis ◽  
Cobalt Carbonyl ◽  
Fischer Tropsch ◽  
Carbonyl Clusters ◽  
Fischer Tropsch Synthesis ◽  
Tem Characterization ◽  
Co Conversion ◽  
New Type ◽  
Cobalt Species

New type of Co-based catalyst was prepared using (CO)6Co2CC(COOH)2 as precursor supported on γ-Al2O3 support. The effects of pretreatment pressures on the catalysts properties and the F-T synthesis performance were investigated in details. Combined with TEM characterization technology, it was found that under different pretreatment pressures (0 MPa, 1.0 MPa, 2.0 MPa), the structure of carbonyl clusters underwent different changes. Moreover, the aggregation degree of cobalt species depends on the pretreated pressure applied. In addition, the catalytic performance of the cobalt carbonyl catalyst pretreated with different pressures was performed and both CO conversion and C5+ selectivity exhibited the order of Co2/2MPa/Al2O3 > Co2/1MPa/Al2O3 > Co2/0MPa/Al2O3.

Effect of the Calcination Temperature on the Catalyst Performance of ZrO2-Supported Cobalt for Fischer-Tropsch Synthesis

2011 ◽  
Vol 347-353 ◽  
pp. 3788-3793 ◽  
Author(s):  
Ya Chun Liu ◽  
Hai Tao Wu ◽  
Li Tao Jia ◽  
Zai Hui Fu ◽  
Jian Gang Chen ◽  
...  
Keyword(s):  
Calcination Temperature ◽  
Conversion Rate ◽  
Tropsch Synthesis ◽  
Cobalt Catalysts ◽  
Product Selectivity ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Co Conversion ◽  
Supported Cobalt Catalysts ◽  
Cobalt Species

The effect of the calcination temperature on the catalyst performance of ZrO2-supported cobalt for Fischer-Tropsch synthesis is investigated. Results show that the size of the cobalt species particles of the ZrO2-supported cobalt catalysts increases and their reducibility is enhanced with increasing calcination temperature. In addition, the extent of CO linear absorption and bridge absorption peak increases and then decreases with increasing calcination temperature. The results from the Fishcer-Tropsch synthesis show that the CO conversion rate increases and then decreases as the calcination temperature is increased. Catalyst selectivity for C1monotonically decreases, whereas that for C5+increases. The changes in the CO conversion rate demonstrate a regularity consistent with the trend of the CO absorption peak extent. Meanwhile, the growth and enhanced reducibility of the cobalt species particles contribute to the generation of heavy hydrocarbons and explain the differences in product selectivity. Therefore, the appropriate calcination temperature facilitates an increase in the CO conversion rate of the ZrO2-supported cobalt catalysts and results in a better Fischer-Tropsch synthesis product selectivity.

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