Dry reforming of ethanol over supported Ni catalysts prepared by impregnation with methanolic solution

Zawadzki, Andressa de; Bellido, Jorge David Alguiar; Lucrédio, Alessandra Fonseca; Assaf, Elisabete Moreira

doi:10.1016/j.fuproc.2014.08.006

Cited by 53 publications

(34 citation statements)

References 30 publications

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“…However, NiCe also showed the highest proportion of filamentous carbon species compared to amorphous carbon compared to the rest of the catalysts, proven based on Raman and SEM analysis. The fine dispersion of Ni o on this sample characterized by the smaller Ni o particles suggest the favoring toward formation of filamentous carbon at low growth rate, due to the low driving force for carbon diffusion through small crystals (Zawadzki et al, 2014).…”

Section: Catalyst Selection For Drementioning

confidence: 80%

See 1 more Smart Citation

CO2 as an Oxidant for High-Temperature Reactions

Kawi

Kathiraser

2015

Front. Energy Res.

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This paper presents a review on the developments in catalyst technology for the reactions utilizing CO 2 for high-temperature applications. These include dehydrogenation of alkanes to olefins, the dehydrogenation of ethylbenzene to styrene, and finally CO 2 reforming of hydrocarbon feedstock (i.e., methane) and alcohols. Aspects on the various reaction pathways are also highlighted. The literature on the role of promoters and catalyst development is critically evaluated. Most of the reactions discussed in this review are exploited in industries and related to on-going processes, thus providing extensive data from literature. However, some reactions, such as CO 2 reforming of ethanol and glycerol, which have not reached industrial scale, are also reviewed owing to their great potential in terms of sustainability, which is essential as energy for the future. This review further illustrates the building-up of knowledge that shows the role of support and catalysts for each reaction and the underlying linkage between certain catalysts, which can be adapted for the multiple CO 2 -related reactions.

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Section: Catalyst Selection For Drementioning

confidence: 80%

“…Recently, Zawadzki et al (2014) studied DRE reaction over Ni supported on Al 2 O 3 , CeO 2 , MgO, and ZrO 2 by impregnating the oxide with a solution of Ni(NO 3 ) 2 in methanol. Their study was aimed to verify the use of methanol in the preparation method and its effect on the different oxide-based supports.…”

Section: Catalyst Selection For Drementioning

confidence: 99%

CO2 as an Oxidant for High-Temperature Reactions

Kawi

Kathiraser

2015

Front. Energy Res.

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“…The achieved H 2 /CO values were greater than the supposedly stoichiometric H 2 /CO ratio = 1 of EDR (cf Equation ). This behaviour could be a consequence of the simultaneous appearance of ethanol dehydrogenation during EDR . Depending on used catalysts, H 2 /CO ratios were obtained from 1.1 to 1.3 appropriate as feedstock for downstream FTS to yield desirable long‐chain hydrocarbons .…”

Section: Resultsmentioning

confidence: 99%

“…Hu and Lu tested conventional Ni/Al 2 O 3 and reported that H 2 /CO = 1 and ethanol conversion beyond 90% were obtained at temperature above 973 K . Furthermore, Zawadzki et al studied Ni catalysts dispersed on diverse support types, namely, Al 2 O 3 , CeO 2 , MgO, and ZrO 2 during EDR and reported Ni/CeO 2 displayed the greatest ethanol conversion amongst these catalysts …”

Section: Introductionmentioning

confidence: 99%

Stability evaluation of ethanol dry reforming on Lanthania‐doped cobalt‐based catalysts for hydrogen‐rich syngas generation

et al. 2018

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Summary Catalytic stability with time‐on‐stream is an important aspect in ethanol dry reforming (EDR) since catalysts could encounter undesirable deterioration arising from deposited carbon. This work examined the promotional effect of La on 10%Co/Al2O3 in terms of activity, stability, and characteristics. Catalysts were characterized by X‐ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), Raman, and X‐ray photoelectron spectroscopy (XPS) measurements whilst catalytic EDR performance of La‐promoted and unpromoted 10%Co/Al2O3 prepared via wet impregnation technique was investigated at 973 K for 72 h using a stoichiometric feed ratio (C2H5OH/CO2 = 1/1). La promoter substantially enhanced both metal dispersion and metal surface area from 0.11% to 0.64% and 0.08 to 0.43 m2 g−1, respectively. Ethanol and CO2 conversions appeared to be stable within 50 to 72 h after experiencing an initial activity drop. The conversion of C2H5OH and CO2 for La‐promoted catalyst was about 1.65 and 1.34 times greater than unpromoted counterpart in this order. The carbonaceous deposition was considerably decreased from 55.6% to 36.8% with La promotion due to La2O2CO3 intermediate formation. Additionally, 3%La‐10%Co/Al2O3 possessed greater oxygen vacancies acting as active sites for CO2 adsorption and hence increasing carbon gasification. Even though graphitic and filamentous carbons were formed on used catalyst surface, La‐addition diminished graphite formation and increased the reactiveness of amorphous carbon.

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“…The growing concerns related to PBFs together with environmental and health regulations indicate the necessity of rational and clean technologies for both energy consumption and energy production, ideally based on renewable sources and even wastes. Moreover, the quality of life and prosperity of the people in urban areas rely upon efficient and sustainable energy production, and the economic and individual development of citizens depends also on affordable and adaptable transport and energy generation/consumption options . To overcome the negative effects of fossil fuels, in 2007 the European Union (EU) agreed to the 20–20–20 objectives: a 20 % reduction in greenhouse gas (GHG) emissions compared with 1990 levels, a 20 % renewable energy market share, and a 20 % improvement in energy efficiency…”

Section: Biomass‐based Biofuelsmentioning

confidence: 99%

Catalytic Dry Reforming for Biomass‐Based Fuels Processing: Progress and Future Perspectives

2016

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We describe and review recent research on potential biomass‐derived fuels consisting of methanol, ethanol, butanol, and carboxylic acids. These fuels possess a volumetric energy densities of 15.6–22.7, 20.9–26.8, and 24.6 (levulinic acid) MJ L−, respectively. We recognize biomass as a valuable, sustainable, and economic fuel source in comparison to fossil fuels. First, we discuss, characterize, and compare all mentioned fuels. Second, we review recent research developments in the continuous pre‐processing for syngas production for biofuels production, specifically concentrating on dry reforming and the catalytic effects on the effluent and process efficiency. Finally, we discuss the future prospects and research needs to realize this technology on a global scale.

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Dry reforming of ethanol over supported Ni catalysts prepared by impregnation with methanolic solution

Cited by 53 publications

References 30 publications

CO2 as an Oxidant for High-Temperature Reactions

CO2 as an Oxidant for High-Temperature Reactions

Stability evaluation of ethanol dry reforming on Lanthania‐doped cobalt‐based catalysts for hydrogen‐rich syngas generation

Catalytic Dry Reforming for Biomass‐Based Fuels Processing: Progress and Future Perspectives

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