Pt supported on doped CeO2/Al2O3 as catalyst for dry reforming of methane

Fonseca, R.; Rabelo‐Neto, Raimundo C.; Simões, R.C.C.; Mattos, Lisiane V.; Noronha, Fábio B.

doi:10.1016/j.ijhydene.2019.09.207

Cited by 56 publications

(7 citation statements)

References 47 publications

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“…Pt supported over Al 2 O 3 and doped CeO 2 /Al 2 O 3 was studied for the BG reforming by da Fonseca et al [163]. In this case, the type of promoter and its role on the Pt activity and stability for the dry reforming was studied.…”

Section: Bimetallic Catalystsmentioning

confidence: 99%

Catalytic Upgrading of Clean Biogas to Synthesis Gas

et al. 2022

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Clean biogas, produced by anaerobic digestion of biomasses or organic wastes, is one of the most promising substitutes for natural gas. After its purification, it can be valorized through different reforming processes that convert CH4 and CO2 into synthesis gas (a mixture of CO and H2). However, these processes have many issues related to the harsh conditions of reaction used, the high carbon formation rate and the remarkable endothermicity of the reforming reactions. In this context, the use of the appropriate catalyst is of paramount importance to avoid deactivation, to deal with heat issues and mild reaction conditions and to attain an exploitable syngas composition. The development of a catalyst with high activity and stability can be achieved using different active phases, catalytic supports, promoters, preparation methods and catalyst configurations. In this paper, a review of the recent findings in biogas reforming is presented. The different elements that compose the catalytic system are systematically reviewed with particular attention on the new findings that allow to obtain catalysts with high activity, stability, and resistance towards carbon formation.

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Section: Bimetallic Catalystsmentioning

confidence: 99%

Catalytic Upgrading of Clean Biogas to Synthesis Gas

et al. 2022

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“…For more information on thermo-catalytic the reader is referred to several reviews available in the literature [20][21][22] In general, noble metal catalysts (namely, Pt, Ru, and Rh) provide enhanced lifetime with a high catalytic activity [23]. Nonetheless, even for Pt on alumina catalysts, deactivation remains significant [24]. The addition of small amounts of ceria along with Pr, Zr or Nb as dopants to Pt/Al 2 O 3 catalyst improved the catalyst lifetime, at the expense of much higher catalyst costs.…”

Section: State Of the Art In Drmmentioning

confidence: 99%

Non-Thermal Plasma for Process and Energy Intensification in Dry Reforming of Methane

et al. 2020

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Plasma-assisted dry reforming of methane (DRM) is considered as a potential way to convert natural gas into fuels and chemicals under near ambient temperature and pressure; particularly for distributed processes based on renewable energy. Both catalytic and photocatalytic technologies have been applied for DRM to investigate the CH4 conversion and the energy efficiency of the process. For conventional catalysis; metaldoped Ni-based catalysts are proposed as a leading vector for further development. However; coke deposition leads to fast deactivation of catalysts which limits the catalyst lifetime. Photocatalysis in combination with non-thermal plasma (NTP), on the other hand; is an enabling technology to convert CH4 to more reactive intermediates. Placing the catalyst directly in the plasma zone or using post-plasma photocatalysis could generate a synergistic effect to increase the formation of the desired products. In this review; the recent progress in the area of NTP-(photo)catalysis applications for DRM has been described; with an in-depth discussion of novel plasma reactor types and operational conditions including employment of ferroelectric materials and nanosecond-pulse discharges. Finally, recent developments in the area of optical diagnostic tools for NTP, such as optical emission spectroscopy (OES), in-situ FTIR, and tunable diode laser absorption spectroscopy (TDLAS), are reviewed.

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“…Cerium(IV) oxide (CeO 2 ) based materials have found multiple applications in different industry fields, such as electronics [1,2], environmental protection [3,4], optics [4,5], catalysis [6][7][8][9][10] and clean energy [11,12], which is the reason why CeO 2 is receiving considerable interest of the scientific community, constantly increasing over the last decade. Particular attention has recently been devoted to the development of next-generation power production system -solid oxide fuel cells (SOFC), which present devices operating with a supply of fuel that can provide sustainable, environmentally-friendly and efficient energy conversion and electricity generation with superior lifetime for widespread necessities [11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Development of a new system of solid ionic conductors based on multi-doped ceria for application in IT-SOFCs

Stojmenović

Žunić

Basoli

et al. 2022

PAC

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Nanosized multi-doped ceria with composition Ce0.8Nd0.0025Sm0.0025Gd0.005Dy0.095Y0.095O2-? (CNSGDY) as perspective solid ionic conductor was obtained by modified glycine-nitrate procedure (MGNP) and room temperature self-propagating reaction (SPRT). The pressed pellets of both powders were sintered at 1550?C for 2 h in an air atmosphere. The obtained sintered samples were characterized by XRPD, Raman spectroscopy, FESEM, EDS and EIS methods. Despite a high temperature of sintering, XRPD and FESEM analyses of the samples confirmed appropriate dimensions of grains with fluorite structure. Overall concentration of introduced dopants (x = 0.2) in the structure of CeO2 after the sintering process was confirmed by EDS analysis. After sintering, Raman spectroscopy confirmed retention of the oxygen vacancies in the ceria lattice, which is in accordance with the improvement of ionic conductivity of solid ionic conductors. The highest value of total conductivity was obtained for the sintered MGNP sample at 700?C (4.22 ? 10?2 S cm?1), with the corresponding activation energy of 0.26 eV.

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Pt supported on doped CeO2/Al2O3 as catalyst for dry reforming of methane

Cited by 56 publications

References 47 publications

Catalytic Upgrading of Clean Biogas to Synthesis Gas

Catalytic Upgrading of Clean Biogas to Synthesis Gas

Non-Thermal Plasma for Process and Energy Intensification in Dry Reforming of Methane

Development of a new system of solid ionic conductors based on multi-doped ceria for application in IT-SOFCs

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