Effect of CO2 in the feed stream on the deactivation of Co/γ-Al2O3 Fischer–Tropsch catalyst

Kim, Seung-Moon; Bae, Jong Wook; Lee, Yun-Jo; Jun, Ki‐Won

doi:10.1016/j.catcom.2008.05.016

Cited by 45 publications

(13 citation statements)

References 14 publications

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“…They found that the selectivity to low molecular hydrocarbons is basically increased with the increase of reaction temperature and inlet H 2 /CO ratio, while the selectivity to high molecular hydrocarbons is basically increased with the decrease of total pressure. Some investigators have reported the effect of operation parameters on the product distribution from cobalt-based catalysts [21][22][23][24][25][26][27][28][29][30][31] and showed that the olefin contents of the product spectrum decreased with increasing pressure, which was consistent with previous investigations [32][33][34]. It is well known that the chemical reaction rate as one of the most important parameters plays a significant role in scale-up a FT reactor and industrial design.…”

Section: Introductionsupporting

confidence: 81%

Effect of process conditions on the surface reaction rates and catalytic performance of MgO supported Fe–Co–Mn catalyst for CO hydrogenation

Arsalanfar

Mirzaei

Bozorgzadeh³

et al. 2012

Journal of Industrial and Engineering Chemistry

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Section: Introductionsupporting

confidence: 81%

Effect of process conditions on the surface reaction rates and catalytic performance of MgO supported Fe–Co–Mn catalyst for CO hydrogenation

Arsalanfar

Mirzaei

Bozorgzadeh³

et al. 2012

Journal of Industrial and Engineering Chemistry

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“…It is difficult to say, however, if these were the effects of an increase in H2:COx, or of an increase of the space velocity due to higher gas flow, or both. These results demonstrated that the relationship that exists between inlet conditions and product distribution is not straight forward and may be unique for specific reactor systems, catalysts and reaction conditions, as confirmed by many studies [77], [81], [82].…”

Section: Syngas -Pem H2 Casesupporting

confidence: 62%

“…Finally, it was observed that in all cases, the catalytic activities (i.e carbon conversions) with lower CO2 content (as in the PEM H2 case) were higher than those obtained with shifted gas composition. Several authors [81] agree that this decrease could be attributed to the oxidizing character of CO2 that would lead to the oxidation of metal particles present on the support, negatively affecting to the catalyst performance. Also, CO2 is a more stable molecule and thermodynamically less active for hydrogenation than is CO.…”

Section: Syngas -Pem H2 Casementioning

confidence: 99%

Experimental analysis and preliminary assessment of an integrated thermochemical process for production of low-molecular weight biofuels from municipal solid waste (MSW)

Materazzi

Holt²

2019

Renewable Energy

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This work explores the use of advanced thermal technologies for the conversion of refuse derived fuel prepared from MSW into clean syngas suitable for catalytic transformation into light hydrocarbon products. In particular, the possibilities for the specific production of C1-C4 hydrocarbons utilising a good quality syngas produced by two-stage plasma assisted gasification method are investigated. A number of catalytic tests were prepared with modified chemistry to evaluate the preliminary component activities on real waste-derived syngas. C1-C4 paraffines formed in all cases as a main products, with different product distribution for different conditions examined (up to 95% bioSNG on hydrocarbon product for supported nickel, 40% bioLPG for Cu-Zn/ZSM-5 catalysts mix). CO2 was the main byproduct with outlet concentrations ranging from 10 to 50% in volume. When increasing H2:CO in the syngas by external addition of hydrogen, CO conversion increases, as well as paraffin selectivity and hydrocarbons yield. Projections on a 65 MW thermal input bioSNG plant show that if 40 MW of electrical output from renewable sources are used to power a PEM stack during high power availability, the production of bioSNG could be increased by more than 33%, with a simultaneous reduction in CO2 emissions of more than 43%.

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“…The selectivity of shorter molecular hydrocarbons (C 1 -C 2 ) has been revealed to be substantially enhanced by increasing the reaction temperature and the H 2 /CO ratio. However, the selection of long molecular hydrocarbons (C 5+ ) is substantially enhanced by reducing the pressure of the reaction [20][21][22][23]. Some researchers recorded the influence of operating conditions on the product selectivity for cobalt-based catalysts [20,24,25] and revealed that the olefin selectivity of the hydrocarbon product range reduced with rising pressure, which has reported in prior studies [19,21,24].…”

Section: Introductionmentioning

confidence: 91%

Effect of Temperature, Syngas Space Velocity and Catalyst Stability of Co-Mn/CNT Bimetallic Catalyst on Fischer Tropsch Synthesis Performance

et al. 2021

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The effect of reaction temperature, syngas space velocity, and catalyst stability on Fischer-Tropsch reaction was investigated using a fixed-bed microreactor. Cobalt and Manganese bimetallic catalysts on carbon nanotubes (CNT) support (Co-Mn/CNT) were synthesized via the strong electrostatic adsorption (SEA) method. For testing the performance of the catalyst, Co-Mn/CNT catalysts with four different manganese percentages (0, 5, 10, 15, and 20%) were synthesized. Synthesized catalysts were then analyzed by TEM, FESEM, atomic absorption spectrometry (AAS), and zeta potential sizer. In this study, the temperature was varied from 200 to 280 °C and syngas space velocity was varied from 0.5 to 4.5 L/g.h. Results showed an increasing reaction temperature from 200 °C to 280 °C with reaction pressure of 20 atm, the Space velocity of 2.5 L/h.g and H2/CO ratio of 2, lead to the rise of CO % conversion from 59.5% to 88.2% and an increase for C5+ selectivity from 83.2% to 85.8%. When compared to the other catalyst formulation, the catalyst sample with 95% cobalt and 5% manganese on CNT support (95Co5Mn/CNT) performed more stable for 48 h on stream.

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Effect of CO2 in the feed stream on the deactivation of Co/γ-Al2O3 Fischer–Tropsch catalyst

Cited by 45 publications

References 14 publications

Effect of process conditions on the surface reaction rates and catalytic performance of MgO supported Fe–Co–Mn catalyst for CO hydrogenation

Effect of process conditions on the surface reaction rates and catalytic performance of MgO supported Fe–Co–Mn catalyst for CO hydrogenation

Experimental analysis and preliminary assessment of an integrated thermochemical process for production of low-molecular weight biofuels from municipal solid waste (MSW)

Effect of Temperature, Syngas Space Velocity and Catalyst Stability of Co-Mn/CNT Bimetallic Catalyst on Fischer Tropsch Synthesis Performance

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