Catalytic CO2 valorization into CH4 on Ni-based ceria-zirconia. Reaction mechanism by operando IR spectroscopy

Aldana, P.A. Ussa; Ocampo, Fabien; Kobl, Kilian; Louis, Benoît; Thibault-Starzyk, Frédéric; Daturi, Marco; Bazin, Philippe; Thomas, Sébastien; Roger, Anne‐Cécile

doi:10.1016/j.cattod.2013.02.019

Cited by 412 publications

(317 citation statements)

References 36 publications

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“…However, at higher temperature (when the CO2 conversion and the CH4 selectivity are considerably higher) the bands attributed to formates and carbonates species present much lower intensities, indicating that these species reacted to form CH4. Thus, the presence of CeO2 on the different materials studied in this work, as already reported in the literature 19,22 promotes the activation of CO2 even at low temperatures, enhancing the CH4 formation. …”

supporting

confidence: 84%

“…However, if this principle can be assumed for the mesoporous based since it was found that the role of SiO2 is mainly the dispersion of Ni particles 22 , for the HNaUSY(2.8) zeolite, it was already reported 18 that CO2 is also activated over extraframework species (EFAL) and compensating cations during methanation. Thus, the results presented for the zeolite catalysts must be carefully analysed.…”

Section: Catalytic Testsmentioning

confidence: 99%

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Micro- and mesoporous supports for CO2 methanation catalysts: A comparison between SBA-15, MCM-41 and USY zeolite

Bacariza

Graça

Bebiano

et al. 2018

Chemical Engineering Science

111

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This version is available at https://strathprints.strath.ac.uk/62298/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Strathprints administrator: strathprints@strath.ac.ukThe Strathprints institutional repository (https://strathprints.strath.ac.uk) is a digital archive of University of Strathclyde research outputs. It has been developed to disseminate open access research outputs, expose data about those outputs, and enable the management and persistent access to Strathclyde's intellectual output. All the results are comparable to the obtained using a HNaUSY zeolite with Si/Al=2.8 as support. Cerium incorporation on Ni/mesoporous supports allowed enhancing the CO2 conversion, especially at lower temperatures, as already reported for the zeolite-based samples.

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supporting

confidence: 84%

Section: Catalytic Testsmentioning

confidence: 99%

Micro- and mesoporous supports for CO2 methanation catalysts: A comparison between SBA-15, MCM-41 and USY zeolite

Bacariza

Graça

Bebiano

et al. 2018

Chemical Engineering Science

111

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“…This provides further evidence that while hydrogen-modified groups were tightly bound to the surface, their reactivity is low and so they might not participate in the pathway to form CH4. These observations are consistent with those of Fujita et al (1993), Jacquemin et al (2010) and Aldana et al (2013), who obtained similar spectra on Ni/SiO2 and Ni/Al2O3 to those observed in this study. Their studies also supported the dissociation of CO2 followed by the subsequent hydrogenation of adsorbed C species for nickel supported on Al2O3 or SiO2.…”

Section: Discussionsupporting

confidence: 93%

“…For the methanation of CO2, nickel catalysts are often active at temperatures above 150°C, but the exact reaction mechanism is still subject to debate. The key question is whether the reaction occurs (i) by the dissociative adsorption of CO2 to form CO and O on the surface of the catalyst (Falconer and Za li, 1980;Weatherbee and Bartholomew, 1981;Fujita et al, 1991;Fujita et al, 1993), or (ii) by the conversion of CO2 to methane via carbonate or formate intermediates which do not involve CO, as suggested by Aldana et al (2013).…”

Section: Introductionmentioning

confidence: 99%

Kinetic studies of CO 2 methanation over a Ni/ γ -Al 2 O 3 catalyst using a batch reactor

Lim

McGregor

Sederman

et al. 2016

Chemical Engineering Science

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“…Then, the carbonate or bicarbonate is hydrogenated and loses H 2 O step by step. Finally, the CH 4 is formed and leaves the catalyst surface [23]. The catalyst with proper H 2 and CO 2 adsorption shows the best activity in the process of CO 2 methanation.…”

Section: Introductionmentioning

confidence: 99%

Application of Ni–Al-hydrotalcite-derived catalyst modified with Fe or Mg in CO2 methanation

2016

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In this work, Ni-Al-hydrotalcite-derived catalyst modified with Fe or Mg for CO 2 methanation was investigated in an attempt to improve the reaction activity at low temperature. Through the characterization of XRD, H 2 -TPR, and N 2 -BET, 0.05Fe-Ni-Al 2 O 3 -HT catalyst can be found with a better reducing property, higher surface area, better Ni dispersion, and smaller pore size. The CO 2 conversion using this catalyst was tested in a fixed-bed reactor in laboratory. The result showed better reaction activity at low temperature. At 219°C, the CO 2 conversion could reach 80.8 %. Meanwhile, the highest CO 2 conversion of 96.0 % was achieved at 350°C.Keywords CO 2 methanation Á Ni-Al hydrotalcite Á Activity Á Reducibility Á Larger/smaller pore size List of symbols k X-ray wavelength h Bragg's angle of diffraction X CO 2 CO 2 conversion S CH 4 Selectivity of CH 4

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Catalytic CO2 valorization into CH4 on Ni-based ceria-zirconia. Reaction mechanism by operando IR spectroscopy

Cited by 412 publications

References 36 publications

Micro- and mesoporous supports for CO2 methanation catalysts: A comparison between SBA-15, MCM-41 and USY zeolite

Micro- and mesoporous supports for CO2 methanation catalysts: A comparison between SBA-15, MCM-41 and USY zeolite

Kinetic studies of CO 2 methanation over a Ni/ γ -Al 2 O 3 catalyst using a batch reactor

Application of Ni–Al-hydrotalcite-derived catalyst modified with Fe or Mg in CO2 methanation

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