Mixtures of Steel-Making Slag and Carbons as Catalyst for Microwave-Assisted Dry Reforming of CH4

Bermúdez, J.M.; Fidalgo, Beatriz; Arenillas, A.; Menéndez, J.Á.

doi:10.1016/s1872-2067(11)60386-0

Cited by 16 publications

(9 citation statements)

References 8 publications

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“…However, the system remained stable for both temperatures although at 700°C some minor deactivation was observed after 300 min. The same team reported on the utilization of slags from steel making combined to two different carbonaceous materials (activated carbon and metallurgical char) as catalyst for a microwave-assisted dry reforming reaction (Bermudez et al, 2012 ). The authors mentioned that the slags alone were not reactive toward microwave and could not be used without any support.…”

Section: Other Conversion Approachesmentioning

confidence: 99%

Review on dry reforming of methane, a potentially more environmentally-friendly approach to the increasing natural gas exploitation

2014

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With the actual growth of the natural gas industry in the US as well as the potential and availability of this non-renewable carbon source worldwide, reforming of methane gas is getting increasing attention. Methane can be used for the production of heat or electricity, as well, it can be converted to syngas, a building block that could lead to the production of liquid fuels and chemicals, a very promising pathway in light of the increasing price of oil. Amongst the different reforming techniques, dry reforming could represent a very interesting approach both to valorize a cheap source or carbon (CO2) as well as to reduce the overall carbon footprint of the increasing worldwide fossil-based methane consumption. In this short review, attention will be given to the thermodynamics of dry reforming followed by an investigation on dry reforming using heterogeneous catalyst by focusing on the most popular elements used in literature for dry reforming. Attention will as well be given to other emerging techniques that may allow countering at one point the high thermodynamic penalties that accompanies conversion of methane using carbon dioxide.

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Section: Other Conversion Approachesmentioning

confidence: 99%

Review on dry reforming of methane, a potentially more environmentally-friendly approach to the increasing natural gas exploitation

2014

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“…The promotional effects of different carbonaceous species, i.e. metallurgical coke (CQ) and coconut shell-derived activated carbon (FY5), on the catalytic performance of steel-making slag (eFe) catalysts for microwave-assisted DRM were evaluated by Bermudez et al (2012) at 800 °C and the stoichiometric feed composition. Comparable to the findings of Fidalgo et al (2011), they found that mixture of Fig.…”

Section: Mixing Metal Catalysts With Microwave-absorbing Materialsmentioning

confidence: 99%

“…Reprinted from Odedairo et al (2016), Copyright (2015, with permission from Elsevier steel-making slag (eFe) and coconut shell-derived activated carbon (FY5) exhibited greater and steadier catalytic activity with time-on-stream compared to those attained using activated carbon alone. Bermudez et al (2012) also conducted microwave-assisted DRM over a mixture of carbon + steelmaking slag and carbon + Ni/Al 2 O 3 at various VSHV in order to examine their catalytic activity with different metals. They discovered that the reactant conversions over carbon + Ni/Al 2 O 3 catalyst was independent from VSHV.…”

Section: Mixing Metal Catalysts With Microwave-absorbing Materialsmentioning

confidence: 99%

“…They discovered that the reactant conversions over carbon + Ni/Al 2 O 3 catalyst was independent from VSHV. This catalyst mixture could surprisingly achieve reactant conversions approximate to 100% with the increasing VSHV up to sixfold than that employed for activated carbon alone (Bermudez et al 2012). Li et al (2017) prepared the Ni/bio-char catalysts with varying Ni loading of 0-20 wt% to study the synergetic influence on their catalytic performance for microwaveassisted DRM at temperature of 800 °C (Li et al 2017).…”

Section: Mixing Metal Catalysts With Microwave-absorbing Materialsmentioning

confidence: 99%

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Microwave-assisted dry reforming of methane for syngas production: a review

Pham

Ro²,

Chen

et al. 2020

Environ Chem Lett

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Abatement of emissions of greenhouse gases such as methane and carbon dioxide is crucial to reduce global warming. For that, dry reforming of methane allows to convert methane and carbon dioxide into useful synthesis gas, named 'syngas', a gas mixture rich in hydrogen and carbon monoxide. However, this process requires high temperatures of about 900 °C to activate methane and carbon dioxide because dry reforming of methane reaction is highly endothermic. Therefore, a solid catalyst with appropriate thermal properties is needed for the reaction. As a consequence, efficient heating of the reactor is required to control heat transfer and optimize energy consumption. Microwave-assisted dry reforming of methane thus appears as a promising alternative to conventional heating. Here we review the recent research on microwave-assisted dry reforming of methane. We present thermodynamical aspects of the dry reforming of methane, and basics of microwave heating and apparatus. We analyse reformers that use microwave heating. Catalysts used in a microwave-assisted reformer are presented and compared with reactors using conventional heating. Finally, the energy balance is discussed.

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“…In recent years, microwave (MW) irradiation has attracted attention as a tool for regeneration due to its capability of molecular-level heating. Interesting reports have appeared on the application of MW-heating technology for regenerating AC (Price and Schmidt 1997;Bradshaw et al 1997;Coss and Cha 2000;Liu et al 2004;Jones et al 2002;Deming et al 2011;Guido et al 2008;Bermudez et al 2012) with very promising results. Applications of microwave regeneration technologies are lagely used in industries for economical purposes (Remya and Lin 2011).…”

Section: Introductionmentioning

confidence: 99%

Effect of microwave heating on the regeneration of modified activated carbons saturated with phenol

et al. 2014

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The purpose of this work was to investigate the effect of microwave irradiation on the regeneration of modified activated carbons (GAC/MW, GAC/Ni, and GAC/Cu). The untreated activated carbon (GAC pure) was used for blank experiment. Microwave heating was used for preparation and regeneration of the modified activated carbons. has no significant effect on phenol adsorption, while the adsorption capacity of activated carbon loaded with Cu 2? significantly decreased. Microwave irradiation showed a positive effect on activated carbon adsorption capacity. Under optimal conditions, the results showed that there was no effect when changing temperature and pH. The effect of ions Ni 2? and Cu 2? loaded into activated carbon were also investigated. During the regeneration process, the activated carbon loaded with Ni 2? showed a strong microwave energy adsorption than the activated carbon loaded with Cu 2? . The effect increasing Ni 2? quantity decreases the activated carbon regeneration efficiency. During the regeneration of activated carbons, the highest temperature was observed in the cases of GAC/Ni. During regeneration, the temperature increases when the quantity Ni 2? loaded increases. The regeneration efficiency of activated carbons reaches 98 % even after 10 times of regeneration cycles. After several regenerations, MW/GAC and GAC/Ni regeneration efficiency was high, while regeneration efficiency of GAC/Cu decreased considerably. GAC regeneration efficiency also decreased several cycles. During regeneration process, phenol was simply desorbed from activated carbons under microwave irradiation.

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Mixtures of Steel-Making Slag and Carbons as Catalyst for Microwave-Assisted Dry Reforming of CH4

Cited by 16 publications

References 8 publications

Review on dry reforming of methane, a potentially more environmentally-friendly approach to the increasing natural gas exploitation

Review on dry reforming of methane, a potentially more environmentally-friendly approach to the increasing natural gas exploitation

Microwave-assisted dry reforming of methane for syngas production: a review

Effect of microwave heating on the regeneration of modified activated carbons saturated with phenol

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