Cobalt catalysts for the conversion of CO2 to light hydrocarbons at atmospheric pressure

Owen, Rhodri E.; O’Byrne, Justin P.; Mattia, Davide; Pluciński, P.; Pascu, Sofia I.; Jones, Matthew D.

doi:10.1039/c3cc46791k

Cited by 76 publications

(49 citation statements)

References 21 publications

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“…Here, it is important to note that there is no significant effect of pressure on the conversion of CO 2 below 270°C. This fact indicates that CO 2 ‐FT reaction will yield desirable results with bit lower chain HCs at low pressure and low temperature, which is supported by various experimental studies conducted at atmospheric pressure . However, increase in temperature up to 477°C is favorable for long chain HCs synthesis at higher pressure .…”

Section: Resultsmentioning

confidence: 69%

“… reported that the long chain HC formation from CO 2 is thermodynamically unfavorable. However, their conclusion is not same as discovered from the recent experimental studies . Yao et al .…”

Section: Introductionmentioning

confidence: 55%

“…Owen et al . have reported the formation of HCs from CO 2 on Cobalt catalsyts at atmospheric pressure with a significant conversion. In the view of above studies, CO 2 hydrogenation provides new opportunities for the development of catalytic processes and sustainable energy.…”

Section: Introductionmentioning

confidence: 99%

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Greenhouse gas CO₂ hydrogenation to fuels: A thermodynamic analysis

Ahmad

Upadhyayula

2018

Env Prog and Sustain Energy

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Over the past few years, chemical conversion of CO2 to alternative fuels such as methanol, dimethyl ether (DME), and hydrocarbons (HCs) is one of the hot topics in chemical engineering. Taking this into consideration, we have investigated the effects of wide range of temperature, pressure and H2/CO2 ratio (with and without CO) on the hydrogenation of CO2 to methanol, DME, and HCs by minimizing the Gibbs free energy. The energy calculations indicate that HC synthesis reaction has the minimum Gibbs free energy change. High pressure, low temperature, and high H2/CO2 ratio favored the methanol and DME synthesis. The HC synthesis is favored by high pressure, low temperature, and high H2/CO2 ratio, but the presence of CO has a major effect on the HC selectivity. The presence of CO suppresses CO2 conversion in all the three reactions studied. CO2 conversion is maximum for the HC synthesis at H2/CO2 > 3. The experimental data obtained from laboratory scale fixed bed reactor show a reasonable comparison with the simulation results. The thermodynamic analysis combined with the catalyst development and chemical kinetics are expected to lead towards a competent methodology for CO2 conversion. © 2018 American Institute of Chemical Engineers Environ Prog, 38: 98–111, 2019

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Section: Resultsmentioning

confidence: 69%

Section: Introductionmentioning

confidence: 55%

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Greenhouse gas CO₂ hydrogenation to fuels: A thermodynamic analysis

Ahmad

Upadhyayula

2018

Env Prog and Sustain Energy

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“…13 Most of the work in the area is focused on the use of Al2O3 supports, generally used in industrial Fischer Tropsch processes. 14 However, some studies have demonstrated that other inorganic oxide supports such as TiO2 can outperform Al2O3 in the Fischer Tropsch process using CO/H2 feeds.…”

Section: 10mentioning

confidence: 99%

Effect of support of Co-Na-Mo catalysts on the direct conversion of CO2 to hydrocarbons

Owen

Pluciński

Mattia

et al. 2016

Journal of CO2 Utilization

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This study of the effect of support of Co-Na-Mo based catalysts on the direct hydrogenation of CO2 into hydrocarbons (HC) provides guidelines for the design of catalysts for CO2 conversion.We demonstrate that the surface area of the support and the metal-support interaction have a key role determining the cobalt crystallite size and consequently the activity of the system. Cobalt particles with sizes < 2 nm supported on MgO present low reverse water gas shift conversion with negligible Fischer-Tropsch activity. Increasing the cobalt particle size to ~ 15 nm supported on SiO2 and ZSM-5 supports not only substantially increases the CO2 conversion but it also provides high HC selectivities. Further increase of the cobalt particle size to 25-30 nm has a detrimental effect on the global CO2 conversion with HC:CO ratios below 1, however, lower methane selectivity and enhanced formation of unsaturated HC products are achieved. Additionally, the metal-support interaction potentially also has a strong effect on the growth chain probability of the formed hydrocarbons, increasing as the metal-support interaction increases. These evidences demonstrate that CO2 conversion and hydrocarbon distribution can be tuned towards desired products by controlled catalyst design.2

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“…[1,2] Generally,cobalt-based catalysts give ahigh selectivity to methane, most likely due to their poor water-gas shift activity. [17] While recent studies have indicated that promoted cobalt systemsc an be effectively used for the formation of hydrocarbonsf rom CO 2 , [18] iron'si nherent water-gas shift activity has resulted in it being the main focus for the formation of C 2 + hydrocarbons. [1,10] The authors have recently shown that while an iron-silica catalysth as relatively low activity with selectivityp rimarily to methane, the addition of promoters can shift selectivity towards lower (C 2 -C 4 )o lefins over 40 %.…”

Section: Introductionmentioning

confidence: 99%

Kinetics of CO₂ Hydrogenation to Hydrocarbons over Iron–Silica Catalysts

et al. 2017

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The conversion of CO2 to hydrocarbons is increasingly seen as a potential alternative source of fuel and chemicals, while at the same time contributing to addressing global warming effects. An understanding of kinetics and mass transfer limitations is vital to both optimise catalyst performance and to scale up the whole process. In this work we report on a systematic investigation of the influence of the different process parameters, including pore size, catalyst support particle diameter, reaction temperature, pressure and reactant flow rate on conversion and selectivity of iron nanoparticle ‐silica catalysts. The results provided on activation energy and mass transfer limitations represent the basis to fully design a reactor system for the effective catalytic conversion of CO2 to hydrocarbons.

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Cobalt catalysts for the conversion of CO2 to light hydrocarbons at atmospheric pressure

Abstract: A series of cobalt heterogeneous catalysts have been developed that are effective for the conversion of CO2 to hydrocarbons. The effect of the promoter and loadings have been investigated.

Cited by 76 publications

References 21 publications

Greenhouse gas CO₂ hydrogenation to fuels: A thermodynamic analysis

Greenhouse gas CO₂ hydrogenation to fuels: A thermodynamic analysis

Effect of support of Co-Na-Mo catalysts on the direct conversion of CO2 to hydrocarbons

Kinetics of CO₂ Hydrogenation to Hydrocarbons over Iron–Silica Catalysts

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Cobalt catalysts for the conversion of CO2 to light hydrocarbons at atmospheric pressure

Abstract: A series of cobalt heterogeneous catalysts have been developed that are effective for the conversion of CO2 to hydrocarbons. The effect of the promoter and loadings have been investigated.

Cited by 76 publications

References 21 publications

Greenhouse gas CO2 hydrogenation to fuels: A thermodynamic analysis

Greenhouse gas CO2 hydrogenation to fuels: A thermodynamic analysis

Effect of support of Co-Na-Mo catalysts on the direct conversion of CO2 to hydrocarbons

Kinetics of CO2 Hydrogenation to Hydrocarbons over Iron–Silica Catalysts

Contact Info

Product

Resources

About

Greenhouse gas CO₂ hydrogenation to fuels: A thermodynamic analysis

Greenhouse gas CO₂ hydrogenation to fuels: A thermodynamic analysis

Kinetics of CO₂ Hydrogenation to Hydrocarbons over Iron–Silica Catalysts