Fuel from the synthesis gas—the role of process engineering

Stelmachowski, M.; Nowicki, Ł.

doi:10.1016/s0306-2619(02)00134-4

Cited by 76 publications

(32 citation statements)

References 3 publications

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“…(as evidenced by the XRD and BET results in Tables 4 and 3), which benefited the production of long chain hydrocarbons but not the CH 4 and C 2 -C 4 hydrocarbons [24]. Meanwhile, the addition of ZSM-5 is also thought to facilitate the cracking of longer chain hydrocarbons to C 5 -C 22 .…”

Section: Catalystmentioning

confidence: 96%

“…The Fischer-Tropsch synthesis (FTS) process is a collection of chemical reactions that converts a mixture of carbon monoxide and hydrogen, also known as syngas, into clean liquid fuels or valuable chemicals [1][2][3][4]. Its products are a wide-range of hydrocarbons from CH 4 to heavy molecular weights and can be sulphur-and nitrogenfree with high cetane number fuels, usually following an AndersonSchulz-Flory distribution [5,6]:…”

Section: Introductionmentioning

confidence: 99%

“…Its products are a wide-range of hydrocarbons from CH 4 to heavy molecular weights and can be sulphur-and nitrogenfree with high cetane number fuels, usually following an AndersonSchulz-Flory distribution [5,6]:…”

Section: Introductionmentioning

confidence: 99%

“…However, the activity of catalysts based on mesoH-ZSM-5 decreased quickly in just 30 h. The SiO 2 /Al 2 O 3 ratio and the crystal size of ZSM-5 have a strong effect on the catalytic performance and product selectivity. The strong acidity and long-path micropores usually cause the over-cracking to undesirable light hydrocarbons (CH 4 and C 2 -C 4 alkanes) [20].…”

Section: Introductionmentioning

confidence: 99%

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A preliminary evaluation of ZSM-5/SBA-15 composite supported Co catalysts for Fischer–Tropsch synthesis

Han

et al. 2015

Fuel Processing Technology

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a b s t r a c t a r t i c l e i n f oA series of ZSM-5/SBA-15 composite supported Co catalysts were prepared and evaluated for the Fischer-Tropsch synthesis (FTS) aimed to maximise the selectivity of C 5 -C 22 hydrocarbons in the product. The composite support was prepared by physically mixing ZSM-5 and SBA-15 of varying proportions and the finished catalysts had a constant Co loading of 15wt.%. The catalysts were tested for their performance in a high pressure fixed-bed reactor operating at T = 240°C, P = 2.0 MPa, H 2 /CO = 2 and GHSV = 1000 h −1. The composite supported catalysts were shown to have much improved catalytic performance over the respective single material supported catalysts. The catalyst with 20wt.% ZSM-5 in the composite support gave the maximum CO conversion (90.6%), maximum selectivity of C 5 -C 22 hydrocarbons (70.0%) and minimum selectivity of light hydrocarbons (13.3% for CH 4 and 7.0% for C 2 -C 4 alkanes). The catalysts were characterized using X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy with an energy dispersive X-ray spectrometer, temperature programmed desorption and temperature programmed reduction. It was revealed that the superior catalytic performance can be attributed to the large pore size and high dispersion of Co 3 O 4 , which afforded an optimum reducibility and acid site density.

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Section: Catalystmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A preliminary evaluation of ZSM-5/SBA-15 composite supported Co catalysts for Fischer–Tropsch synthesis

Han

et al. 2015

Fuel Processing Technology

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“…Under favorable conditions the final composition of the synthesis product will be correlated with a so-called ASF distribution (Anderson-Schulz-Flory) with the growth probability of hydrocarbons (α) [24,25]. The ASF equation is used for description of the hydrocarbon synthesis reaction form CO-H2 and CO2-H2 mixtures.…”

Section: Introductionmentioning

confidence: 99%

Methanation of carbon dioxide by hydrogen reduction – a thermodynamic analysis

Kaczmarczyk

Mlonka-Mędrala

Gurgul³

2017

E3S Web Conf.

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Abstract. The paper presents a thermodynamic analysis of the methanation of carbon dioxide by hydrogen reduction. Equilibrium gas phase composition was determined by means of parametric equations. Calculations were performed for the temperature range T = 500 -700 K and the initial composition ∈ (0 − 1).. A crucial parameter for catalytic processes, carbon precipitation range [ ] = , was presented as a function of temperature and an initial gas phase CO2-H2 composition. The CO2 conversion efficiency and the methane yield in the process was determined. Obtained results may be used for experimental research prediction and in industrial pragmatic.

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Effect of reaction conditions on supercritical hexanes mediated higher alcohol synthesis over a CuCoZn catalyst

Zhang

Stewart

et al. 2014

AIChE Journal

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Higher alcohol synthesis (HAS) from syngas over a CuCo based catalyst was investigated under supercritical hexanes conditions. The effects of hexanes/syngas molar ratio, H2/CO molar ratio, and gas hourly space velocity (GHSV) on gas‐phase HAS and supercritical hexanes‐phase HAS (SC‐HAS) were investigated. The CO conversion remained relatively constant with increases in the hexanes/syngas molar ratio, whereas the CH4 selectivity decreased. Higher alcohol productivity was found to increase monotonically with an increase in the hexanes/syngas molar ratio. Productivity of higher alcohols increased with an increase in the H2/CO ratio under the gas‐phase conditions. An opposite trend in higher alcohol productivity with H2/CO was observed in SC‐HAS. Further experiments were performed using argon as the reaction medium for comparison with the supercritical hexanes medium results. The enhanced higher alcohol productivity observed in this system can be attributed to improved extraction of alcohol products from the catalyst pores under the supercritical conditions. © 2014 American Institute of Chemical Engineers AIChE J, 60: 1786–1796, 2014

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Fuel from the synthesis gas—the role of process engineering

Cited by 76 publications

References 3 publications

A preliminary evaluation of ZSM-5/SBA-15 composite supported Co catalysts for Fischer–Tropsch synthesis

A preliminary evaluation of ZSM-5/SBA-15 composite supported Co catalysts for Fischer–Tropsch synthesis

Methanation of carbon dioxide by hydrogen reduction – a thermodynamic analysis

Effect of reaction conditions on supercritical hexanes mediated higher alcohol synthesis over a CuCoZn catalyst

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