A coke-resistant catalyst for the dry reforming of methane based on Ni nanoparticles confined within rice husk-derived mesoporous materials

Hoyos, Luis A. Salazar; Faroldi, Betina María Cecilia; Cornaglia, Laura María

doi:10.1016/j.catcom.2019.105898

Cited by 27 publications

(4 citation statements)

References 25 publications

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“…However, the Ni-MCM-41 catalyst showed higher stability than its counterpart. A H 2 :CO ratio of 0.8 was obtained over the Ni-MCM-41 during DRM, proving the occurrence of an RWGS reaction [216]. Meanwhile, a H 2 /CO ratio of 1.1 was obtained during DRM over the Ni/MCM-41 catalyst, with higher formation of H 2 via a methane decomposition reaction.…”

Section: Mesoporous Silicasmentioning

confidence: 84%

“…However, the Ni nanoparticles on the surface of MCM-41 deactivated within 12 h of DRM. Additionally, Ni-MCM-14 synthesized via a microwave-assisted one-pot method resulted in smaller Ni nanoparticles than the ones synthesized via the wet impregnation method (Ni/MCM-41) [216]. In both catalysts, the mesoporous MCM-14 was synthesized from rice husk ash (RHA) via hydrothermal methods.…”

Section: Mesoporous Silicasmentioning

confidence: 99%

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A Review on the Different Aspects and Challenges of the Dry Reforming of Methane (DRM) Reaction

Hussien

Polychronopoulou

2022

Nanomaterials

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The dry reforming of methane (DRM) reaction is among the most popular catalytic reactions for the production of syngas (H2/CO) with a H2:CO ratio favorable for the Fischer–Tropsch reaction; this makes the DRM reaction important from an industrial perspective, as unlimited possibilities for production of valuable products are presented by the FT process. At the same time, simultaneously tackling two major contributors to the greenhouse effect (CH4 and CO2) is an additional contribution of the DRM reaction. The main players in the DRM arena—Ni-supported catalysts—suffer from both coking and sintering, while the activation of the two reactants (CO2 and CH4) through different approaches merits further exploration, opening new pathways for innovation. In this review, different families of materials are explored and discussed, ranging from metal-supported catalysts, to layered materials, to organic frameworks. DRM catalyst design criteria—such as support basicity and surface area, bimetallic active sites and promoters, and metal–support interaction—are all discussed. To evaluate the reactivity of the surface and understand the energetics of the process, density-functional theory calculations are used as a unique tool.

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Section: Mesoporous Silicasmentioning

confidence: 84%

Section: Mesoporous Silicasmentioning

confidence: 99%

A Review on the Different Aspects and Challenges of the Dry Reforming of Methane (DRM) Reaction

Hussien

Polychronopoulou

2022

Nanomaterials

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“…Biomass and agricultural residue are new age renewable sources that can be used as energy precursors through various thermochemical conversion methods such as pyrolysis, hydrothermal carbonization, torrefaction, and gasification [8]. The widespread availability of biomass makes it suitable for a range of industrial applications in terms of energy, effluent treatment and controlling GHG emissions.…”

Section: Introductionmentioning

confidence: 99%

New Insights Into Method Development and Characterization of Amorphous Silica From Wheat Straw

Ramasamy

Davamani

Parameswari

et al. 2023

Silicon

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Amorphous silica, a specialised silicate adsorbent is extensively extracted from agricultural residues for application in various environmental domains. Wheat straws are a rich source of silica that have earlier been overlooked however demand for value addition. The study presents an innovative approach to extracting silica from wheat straw and standardising the extraction process to produce clean product. The sodium silicate solution and the amorphous silica synthesis were obtained by modifying the template mediated sol–gel method. Optimum temperature, concentration and pH were identified for the cleaner production of silica with maximum yield and favourable adsorbent characteristics. The crystallographic properties analysed by the X-Ray Diffraction revealed the amorphous nature of silica extracted from ash at 650 °C for 4 h. The structure of phytolith present in the wheat straw was observed in the form of articulated elongate undulate epidermal phytolith under scanning electron microscopy. The Energy Dispersive X-ray spectrum exhibited higher amount of silica (Si %) of 70.10% with a minimal percentage of potassium (9.96%). The sharp bend at 1025 cm−1 is attributed to the siloxane (Si–O-Si) vibrations in Fourier transform infrared spectroscopic graph of amorphous silica. The specific surface area measurements of amorphous silica showed type II isotherm curve with a hysteresis of H3 type. The optimum conditions derived to produce amorphous silica were 3 M NaOH and 3 M H2SO4 at pH 9.

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“…Despite being nanostructured, Ni(dmf) appeared to have structural stability, and thus was able to reduce the sintering effect. Some studies reported that high porosity can be advantageous for reforming activity of Ni catalysts [183,218,219]. However, in a previous study, naphthalene conversion over Commercial 1 was compared with another Ni catalyst supported on Al2O3 [32].…”

Section: Effect Of Hbr On Naphthalene Reformingmentioning

confidence: 97%

Catalytic activities and resistance to poisoning of tar reforming catalysts for syngas upgrading

Dara¹

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A coke-resistant catalyst for the dry reforming of methane based on Ni nanoparticles confined within rice husk-derived mesoporous materials

Cited by 27 publications

References 25 publications

A Review on the Different Aspects and Challenges of the Dry Reforming of Methane (DRM) Reaction

A Review on the Different Aspects and Challenges of the Dry Reforming of Methane (DRM) Reaction

New Insights Into Method Development and Characterization of Amorphous Silica From Wheat Straw

Catalytic activities and resistance to poisoning of tar reforming catalysts for syngas upgrading

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