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.

scholarly journals RETRACTED: Effect of pretreatment temperature on catalytic performance of the catalysts derived from cobalt carbonyl cluster in Fischer-Tropsch Synthesis

2017 ◽  
Vol 17 (43) ◽  
pp. 38-41
Author(s):  
Byambasuren O ◽  
Ulziibayar D ◽  
Chiibaatar D
Keyword(s):  
Catalytic Performance ◽  
Tropsch Synthesis ◽  
Carbonyl Cluster ◽  
Cobalt Carbonyl ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Pretreatment Temperature

On 3rd March 2018, the Editorial Board of the Mongolian Journal of Chemistry decided to retract the article entitled "Effect of pretreatment temperature on catalytic performance of the catalysts derived from cobalt carbonyl cluster in Fischer-Tropsch Synthesis" because of an authorship dispute. The article was originally published in Vol.17 No.43 2016 pp.38-41. DOI: http://dx.doi.org/10.5564/mjc.v17i43.745

scholarly journals The Catalytic Performance of Ni-Co/Beta Zeolite Catalysts in Fischer-Tropsch Synthesis

Catalysts ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 112 ◽  
Author(s):  
Renata Sadek ◽  
Karolina A. Chalupka ◽  
Pawel Mierczynski ◽  
Waldemar Maniukiewicz ◽  
Jacek Rynkowski ◽  
...  
Keyword(s):  
Catalytic Performance ◽  
Tropsch Synthesis ◽  
Zeolite Catalysts ◽  
Metallic Nickel ◽  
Beta Zeolite ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Co Conversion ◽  
Liquid Products ◽  
Very High

The influence of nickel introduction on the catalytic performance of cobalt micro- and mesoporous Beta zeolite catalysts in Fischer–Tropsch Synthesis was studied. Catalysts containing 3 wt% of nickel and 10 wt% of cobalt were prepared by co-impregnation and sequential impregnation and comprehensively characterized by XRD, XPS, NH3-TPD, TPR-H2 and TEM EDX techniques. Neither the dealumination of Beta zeolite nor the incorporation of Co and Ni affected its structure, as shown by XRD and BET investigations. The presence of nickel results in the decrease in the temperature of the cobalt oxide reduction, evidenced by TPR-H2 and the increase of CO conversion. Among all the tested catalysts, the best catalytic properties in FTS showed that based on microporous dealuminated zeolites with a very high CO conversion, near 100%, and selectivity to liquid products of about 75%. In case of dealuminated samples, the presence of Ni decreased the selectivity to liquid products. All catalysts under study showed high resistance to deactivation during the whole time of synthesis (24 h). The very high stability of nickel-cobalt based Beta catalysts was probably due to the hydrogen spillover from metallic nickel particles to cobalt oxides, which decreased re-oxidation of the active phase, sintering and the creation of the carbon on the catalyst surface. Moreover, the presence of Ni on the surface of cobalt-based Beta catalysts could obstruct the formation of graphitic carbon and, in consequence, delay the deactivation of the catalyst.

scholarly journals Retraction Notice: Effect of pretreatment temperature on catalytic performance of the catalysts derived from cobalt carbonyl cluster in Fischer-Tropsch Synthesis

2018 ◽  
Vol 18 (44) ◽  
Author(s):  
Byambasuren O ◽  
Ulziibayar D ◽  
Chiibaatar D
Keyword(s):  
Catalytic Performance ◽  
Tropsch Synthesis ◽  
Carbonyl Cluster ◽  
Cobalt Carbonyl ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Pretreatment Temperature ◽  
Retraction Notice

On 3rd March 2018, the Editorial Board of the Mongolian Journal of Chemistry decided to retract the article entitled "Effect of pretreatment temperature on catalytic performance of the catalysts derived from cobalt carbonyl cluster in Fischer-Tropsch Synthesis" because of an authorship dispute. The article was originally published in Vol.17 No.43 2016 pp.38-41. DOI: http://dx.doi.org/10.5564/mjc.v17i43.745

Isomorphic titanium-substituted mesoporous SBA-16 as support for cobalt Fischer–Tropsch synthesis catalysts: Balance between dispersion and reduction

2021 ◽  
Author(s):  
Liang Wei ◽  
Jian Chen ◽  
Shuai Lyu ◽  
Chengchao Liu ◽  
Yanxi Zhao ◽  
...  
Keyword(s):  
Catalytic Performance ◽  
Tropsch Synthesis ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Support Interaction ◽  
Delicate Balance ◽  
Metal Support Interaction ◽  
Metal Support ◽  
Synthesis Catalysts

The delicate balance between dispersion and reduction of the Co-based Fischer–Tropsch synthesis catalyst is the golden key to enhancing catalytic performance, which highly depends on an optimized metal–support interaction. In...

scholarly journals Preparation and High-Throughput Testing of TiO2-Supported Co Catalysts for Fischer‒Tropsch Synthesis

Catalysts ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 352
Author(s):  
Christian Schulz ◽  
Peter Kolb ◽  
Dennis Krupp ◽  
Lars Ritter ◽  
Alfred Haas ◽  
...  
Keyword(s):  
High Throughput ◽  
Anatase Phase ◽  
Rutile Phase ◽  
Tropsch Synthesis ◽  
Performance Tests ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Co Catalysts ◽  
Impregnation Technique ◽  
Co Conversion

A series of Co/TiO2 catalysts was tested in a parameters field study for Fischer‒Tropsch synthesis (FTS). All catalysts were prepared by the conventional impregnation technique to obtain an industrially relevant Co content of 10 wt % or 20 wt %, respectively. In summary, 10 different TiO2 of pure anatase phase, pure rutile phase, as well as mixed rutile and anatase phase were used as supports. Performance tests were conducted with a 32-fold high-throughput setup for accelerated catalyst benchmarking; thus, 48 experiments were completed within five weeks in a relevant operation parameters field (170 °C to 233.5 °C, H2/CO ratio 1 to 2.5, and 20 bar(g)). The most promising catalyst showed a CH4 selectivity of 5.3% at a relevant CO conversion of 60% and a C5+ productivity of 2.1 gC5+/(gCo h) at 207.5 °C. These TiO2-based materials were clearly differentiated with respect to the application as supports in Co-catalyzed FTS catalysis. The most prospective candidates are available for further FTS optimization at a commercial scale.

Effect of Ba on the catalytic performance of Co-Ru/Al2O3 catalyst for Fischer-Tropsch synthesis

Fuel ◽  
2021 ◽  
Vol 292 ◽  
pp. 120398
Author(s):  
Shupeng Guo ◽  
Zhongyi Ma ◽  
Jungang Wang ◽  
Bo Hou ◽  
Litao Jia ◽  
...  
Keyword(s):  
Catalytic Performance ◽  
Tropsch Synthesis ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Al2o3 Catalyst

scholarly journals Passivation of Co/Al2O3 Catalyst by Atomic Layer Deposition to Reduce Deactivation in the Fischer–Tropsch Synthesis

Catalysts ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 732
Author(s):  
José Antonio Díaz-López ◽  
Jordi Guilera ◽  
Martí Biset-Peiró ◽  
Dan Enache ◽  
Gordon Kelly ◽  
...  
Keyword(s):  
Atomic Layer Deposition ◽  
Atomic Layer ◽  
Tropsch Synthesis ◽  
Catalyst Stability ◽  
Fischer Tropsch ◽  
Technical Feasibility ◽  
Fischer Tropsch Synthesis ◽  
Layer Deposition ◽  
Co Conversion ◽  
Al2o3 Catalyst

The present work explores the technical feasibility of passivating a Co/γ-Al2O3 catalyst by atomic layer deposition (ALD) to reduce deactivation rate during Fischer–Tropsch synthesis (FTS). Three samples of the reference catalyst were passivated using different numbers of ALD cycles (3, 6 and 10). Characterization results revealed that a shell of the passivating agent (Al2O3) grew around catalyst particles. This shell did not affect the properties of passivated samples below 10 cycles, in which catalyst reduction was hindered. Catalytic tests at 50% CO conversion evidenced that 3 and 6 ALD cycles increased catalyst stability without significantly affecting the catalytic performance, whereas 10 cycles caused blockage of the active phase that led to a strong decrease of catalytic activity. Catalyst deactivation modelling and tests at 60% CO conversion served to conclude that 3 to 6 ALD cycles reduced Co/γ-Al2O3 deactivation, so that the technical feasibility of this technique was proven in FTS.

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