Product Distribution of Fischer-Tropsch Synthesis in a Slurry Bubble Column Reactor Based on Langmuir-Freundlich Isotherm

Hassankiadeh, Mojtaba Nabipoor; Haghtalab, Ali

doi:10.1080/00986445.2012.742432

Cited by 10 publications

(3 citation statements)

References 21 publications

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“…Freundlich isotherm pressure and the surface coverage fraction would be unity. This is consistent with results in the literature (Nabipoor Hassankiadeh and Haghtalab, 2013). The above-mentioned adsorption parameters based on the experimental data are presented in Table 2 for both isotherms.…”

Section: Ln Cesupporting

confidence: 92%

Parametric study of sweetening process of sour gas by Molybdenum oxide nanoparticles

Hosseini

Hassankiadeh

2017

Braz. J. Chem. Eng.

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The purpose of this work is to study the application of nano-molybdenum oxide adsorbent in gas sweetening process. Experiments were made to evaluate the operating and geometrical parameters in the adsorption process. The process performance of H 2 S removal from methane gas on molybdenum oxide nanoparticles was defined as the ratio of final concentration of H 2 S on the initial concentration of H 2 S. The effects of operating conditions such as operating temperature, pressure, the size of nanoparticles, the amount of H 2 S concentration in feed stream, feed superficial velocity, and the bed length were studied in this paper. Different temperature values (65, 75, 85, 87 and 89 °C) and pressure values (10, 13, 16 and 19 bar) were applied on the adsorption bed with 19 cm length and 10 cm diameter. Two types of spherical and cylindrical nanoparticles were applied and the effect of different adsorbents diameters (54, 58, 73, 77 and 83 nm) on the process quality (C/C 0) was investigated. Also, the effect of initial concentration of H 2 S in the feed gas stream was surveyed. The optimum operating conditions for spherical and cylindrical types were the same, 16 bar and 85 °C. The adsorption capacity of 0.22 g H 2 S/g MoO 2 and 0.19 g H 2 S/g MoO 2 was achieved at the optimum conditions using nano-spherical and nano-cylindrical MoO 2 sorbent, respectively. Applying in our study two adsorption isotherms, the Langmuir and Freundlich isotherms, analysis of variance displayed a high coefficient of determination (R 2) value of 0.989 for the Freundlich isotherm, indicating the satisfactory adjustment of the experimental data. The results can be interesting for related industries and can be applicable in process optimization.

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Section: Ln Cesupporting

confidence: 92%

Parametric study of sweetening process of sour gas by Molybdenum oxide nanoparticles

Hosseini

Hassankiadeh

2017

Braz. J. Chem. Eng.

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“…To further comprehend FTS, many have attempted to use mathematical modeling as a useful means of describing the process [23][24][25][26][27][28]. Density functional theory (DFT) calculations, paired with experimental procedures, have provided further insight into the FTS mechanism [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

“…Probabilistic models attempt to describe the propagation of the carbon chain to generate the products observed [23][24][25]. Kinetic models focus more specifically on the rate of the reaction, determining a mechanism to describe the reaction as a whole [26][27][28]. While these models have significant application for understanding FTS, they do not exist without limitation.…”

Section: Introductionmentioning

confidence: 99%

Fischer–Tropsch Synthesis: Computational Sensitivity Modeling for Series of Cobalt Catalysts

et al. 2019

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Nearly a century ago, Fischer and Tropsch discovered a means of synthesizing organic compounds ranging from C1 to C70 by reacting carbon monoxide and hydrogen on a catalyst. Fischer–Tropsch synthesis (FTS) is now known as a pseudo-polymerization process taking a mixture of CO as H2 (also known as syngas) to produce a vast array of hydrocarbons, along with various small amounts of oxygenated materials. Despite the decades spent studying this process, it is still considered a black-box reaction with a mechanism that is still under debate. This investigation sought to improve our understanding by taking data from a series of experimental Fischer–Tropsch synthesis runs to build a computational model. The experimental runs were completed in an isothermal continuous stirred-tank reactor, allowing for comparison across a series of completed catalyst tests. Similar catalytic recipes were chosen so that conditional comparisons of pressure, temperature, SV, and CO/H2 could be made. Further, results from the output of the reactor that included the deviations in product selectivity, especially that of methane and CO2, were considered. Cobalt was chosen for these exams for its industrial relevance and respectfully clean process as it does not intrinsically undergo the water–gas shift (WGS). The primary focus of this manuscript was to compare runs using cobalt-based catalysts that varied in two oxide catalyst supports. The results were obtained by creating two differential equations, one for H2 and one for CO, in terms of products or groups of products. These were analyzed using sensitivity analysis (SA) to determine the products or groups that impact the model the most. The results revealed a significant difference in sensitivity between the two catalyst–support combinations. When the model equations for H2 and CO were split, the results indicated that the CO equation was significantly more sensitive to CO2 production than the H2 equation.

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Experimental and kinetic modeling of Fischer–Tropsch synthesis over nano structure catalyst of Co–Ru/carbon nanotube

Haghtalab

Shariati

Mosayebi

2019

Reac Kinet Mech Cat

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Product Distribution of Fischer-Tropsch Synthesis in a Slurry Bubble Column Reactor Based on Langmuir-Freundlich Isotherm

Cited by 10 publications

References 21 publications

Parametric study of sweetening process of sour gas by Molybdenum oxide nanoparticles

Parametric study of sweetening process of sour gas by Molybdenum oxide nanoparticles

Fischer–Tropsch Synthesis: Computational Sensitivity Modeling for Series of Cobalt Catalysts

Experimental and kinetic modeling of Fischer–Tropsch synthesis over nano structure catalyst of Co–Ru/carbon nanotube

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