Customized Ni-MgO-ZrO2 catalysts for the dry reforming of methane using coke oven gas: Optimizing the MgO content

Kim, Beom-Jun; Park, Ho-Ryong; Lee, Yeol-Lim; Ahn, Soonho; Kim, Kyoung-Jin; Hong, Ga-Ram; Roh, Hyun Seog

doi:10.1016/j.jcou.2022.102379

Cited by 12 publications

(8 citation statements)

References 65 publications

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“…The Zr 3d core-level spectra for all calcined solids ( Figure S4 in the Supplementary Materials ) presented a doublet at approximately 183.05 eV and 185.5 eV and corresponded to the Zr 3d spin-orbit splitting components (Zr 3d 5/2 and Zr 3d 3/2 ) of Zr 4+ [ 55 , 56 ]. Upon the impregnation of Me, the Zr 3d peaks upshifted in their BE, indicating that the chemical nature of the Zr 4+ species in these materials differed from that in the parent NiCeZr [ 57 ].…”

Section: Resultsmentioning

confidence: 99%

“…Our catalysts followed this linear correlation (Figure S6, Supplementary Materials). The Zr 3d core-level spectra for all calcined solids (Figure S4 in the Supplementary Materials) presented a doublet at approximately 183.05 eV and 185.5 eV and corresponded to the Zr 3d spin-orbit splitting components (Zr 3d5/2 and Zr 3d3/2) of Zr 4+ [55,56]. Upon the impregnation of Me, the Zr 3d peaks upshifted in their BE, indicating that the chemical nature of the Zr 4+ species in these materials differed from that in the parent NiCeZr [57] Among the three dopants used, Sn caused the largest shift, suggesting that the strongest interaction occurs between Zr and Me.…”

Section: Surface Characterization Using Xps Analysismentioning

confidence: 99%

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Hydrogenolysis of Glycerol over NiCeZr Catalyst Modified with Mg, Cu, and Sn at the Surface Level

Vera-Hincapie,

Iriarte-Velasco,

Ayastuy

et al. 2024

IJMS

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Biomass valorization is an essential strategy for converting organic resources into valuable energy and chemicals, contributing to the circular economy, and reducing carbon footprints. Glycerol, a byproduct of biodiesel production, can be used as a feedstock for a variety of high-value products and can contribute to reducing the carbon footprint. This study examines the impact of surface-level modifications of Mg, Cu, and Sn on Ni-Ce-Zr catalysts for the hydrogenolysis of glycerol, with in situ generated hydrogen. The aim of this approach is to enhance the efficiency and sustainability of the biomass valorization process. However, the surface modification resulted in a decrease in the global conversion of glycerol due to the reduced availability of metal sites. The study found that valuable products, such as H2 and CH4 in the gas phase, and 1,2-PG in the liquid phase, were obtained. The majority of the liquid fraction was observed, particularly for Cu- and Sn-doped catalysts, which was attributed to their increased acidity. The primary selectivity was towards the cleavage of the C–O bond. Post-reaction characterizations revealed that the primary causes of deactivation was leaching, which was reduced by the inclusion of Cu and Sn. These findings demonstrate the potential of Cu- and Sn-modified Ni-Ce-Zr catalysts to provide a sustainable pathway for converting glycerol into value-added chemicals.

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Section: Resultsmentioning

confidence: 99%

Section: Surface Characterization Using Xps Analysismentioning

confidence: 99%

Hydrogenolysis of Glycerol over NiCeZr Catalyst Modified with Mg, Cu, and Sn at the Surface Level

Vera-Hincapie,

Iriarte-Velasco,

Ayastuy

et al. 2024

IJMS

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“…10–12 On the one hand, the Boudouard reaction (2CO → C + CO 2 ) and methane decomposition (CH 4 → C + 4H) produce carbon deposition during the reaction process, which significantly deactivates the active metal phase Ni catalyst. 13,14 On the other hand, the reaction process of DRM is usually carried out at high temperatures, leading to the aggregation and sintering of Ni particles on the carrier surface, which dramatically reduces the performance of DRM. 15–18 Therefore, developing catalysts with low-temperature efficiency, durability, sintering resistance, and coking resistance for DRM is a great concern and a key challenge.…”

Section: Introductionmentioning

confidence: 99%

Stable Ni nanocrystals on porous single-crystalline MgO particles for enhanced dry reforming activity and durability of CH₄/CO₂

Zhang,

Cheng,

Xie

2024

Catal. Sci. Technol.

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“…The addition of alkaline and alkaline earth metal promoters or metal oxide promoters (K, Mg, etc.) increasing the basicity of catalyst [10,11] that can prevent methane cracking. Perovskite materials have been utilized as promoters or co-active species.…”

Section: Introductionmentioning

confidence: 99%

Study of Ni-Co-ZrO2/Al2O3 Catalysts for Carbon Dioxide Reforming of Methane at Low CO2

Ratana,

Thongdee,

Sawansombut

et al. 2024

Trends Sci

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This work studied the composition of Ni-Co-ZrO2/Al2O3 catalyst on properties and efficiency of catalysts for carbon dioxide reforming of methane (CMR) when CO2 was fed as the limiting reagent and CH4 as the excess reactant. 9wt%Ni-1wt%ZrO2/Al2O3, 4.5wt%Ni-4.5%wtCo-1wt%ZrO2/Al2O3, 9wt%Co-1wt%ZrO2/Al2O3 and 7wt%Co-3wt%ZrO2/Al2O3 catalysts were prepared by wet impregnation method. The physicochemical properties of present catalysts were characterized by XRD, N2 adsorption-desorption H2-TPR and CO2-TPD. The CRM performance was determined in a tubular fixed-bed reactor at 600 °C for 6 h with limiting of carbon dioxide. The carbon deposition on spent catalysts were examined by TGA. The results showed that Co-ZrO2 catalysts provided greater activities, selectivity toward H2 and stability than Ni-ZrO2 and Ni-Co-ZrO2 catalysts. 9wt%Co-1wt%ZrO2/Al2O3 provided higher reactant conversions and H2/CO ratio than 7wt%Co-3wt%ZrO2/Al2O3 while the minimum coke formation was observed on spent 7wt%Co-3wt%ZrO2/Al2O3. It is because oxophilic properties and oxygen vacancy sites in Co-ZrO2 increase CO2 dissociative adsorption as well as oxygen transport on the catalyst surface. HIGHLIGHTS This work developed Ni-Co-ZrO2/Al2O3 catalysts for carbon dioxide reforming of methane (CMR) when CO2 is fed as the limiting reagent demonstrated petroleum refinery application. Remarkable points of this work are revealed below. Co-ZrO2 catalysts provided greater reactant activities, selectivity toward H2 and stability than Ni-ZrO2 and Ni-Co-ZrO2 The oxophilic property accompanied with oxygen vacancy sites in Co-ZrO2 increase CO2 dissociative absorption and oxygen transport on the catalyst surface. 9wt%Co-1wt%ZrO2/Al2O3 provided relative highest reactant conversions and highest H2/CO ratio. 7wt%Co-3wt%ZrO2/Al2O3 presented the minimum coke formation. GRAPHICAL ABSTRACT

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Customized Ni-MgO-ZrO2 catalysts for the dry reforming of methane using coke oven gas: Optimizing the MgO content

Cited by 12 publications

References 65 publications

Hydrogenolysis of Glycerol over NiCeZr Catalyst Modified with Mg, Cu, and Sn at the Surface Level

Hydrogenolysis of Glycerol over NiCeZr Catalyst Modified with Mg, Cu, and Sn at the Surface Level

Stable Ni nanocrystals on porous single-crystalline MgO particles for enhanced dry reforming activity and durability of CH₄/CO₂

Study of Ni-Co-ZrO2/Al2O3 Catalysts for Carbon Dioxide Reforming of Methane at Low CO2

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Customized Ni-MgO-ZrO2 catalysts for the dry reforming of methane using coke oven gas: Optimizing the MgO content

Cited by 12 publications

References 65 publications

Hydrogenolysis of Glycerol over NiCeZr Catalyst Modified with Mg, Cu, and Sn at the Surface Level

Hydrogenolysis of Glycerol over NiCeZr Catalyst Modified with Mg, Cu, and Sn at the Surface Level

Stable Ni nanocrystals on porous single-crystalline MgO particles for enhanced dry reforming activity and durability of CH4/CO2

Study of Ni-Co-ZrO2/Al2O3 Catalysts for Carbon Dioxide Reforming of Methane at Low CO2

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Stable Ni nanocrystals on porous single-crystalline MgO particles for enhanced dry reforming activity and durability of CH₄/CO₂