The Effect of Granulated Fe Cluster-doped CNTs Support on The Catalytic Performance of NiO Catalyst in the DRM Reaction

Kutelia, E.; Dossumov, K.; Yergasiyeva, Gaukhar; Gventsadze, D.; Jalabadze, Nikoloz; Dzigrashvili, T.; Nadaraia, L.; Tsurtsumia, Olga; Mambetova, Manshuk

doi:10.5185/amlett.2022.041709

Cited by 1 publication

(3 citation statements)

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“…Bioxide Ni-Сo/D (oxide ratio NiO-Сo ). Heat treatment of the catalysts was carried out in an air stream at 300 °С for 2 h and at 500 °С for 3 h, at a rate of 3 °С/min [28].…”

Section: Preparation Of Catalystsmentioning

confidence: 99%

“…Testing the activity of the synthesized catalysts in the dry reforming of methane as carried out on a flow-type laboratory unit (Fig. 1) [28]. Before the DRM, the catalysts were pretreated with 15% H 2 /Ar at a gas hourly space velocity (GHSV) of 1000 h −1 for 180 min at 500 °C.…”

Section: Testing Of Catalysts and Analysis Of Reaction Productsmentioning

confidence: 99%

“…Eurasian Chemico-Technological Journal 25 (2023) [21][22][23][24][25][26][27][28][29][30][31][32] Catalysts based on Co oxides are less active in the DRM reaction, but more stable to coking than nickel catalysts [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Lanthanum Oxide on the Activity Ni-Co/Diatomite Catalysts in Dry Reforming of Methane

Yergaziyeva¹,

Kutelia

Dossumov³

et al. 2023

Eurasian Chem.-Technol. J.

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The effect of modifying additive (La2О3) on the activity of Ni-Co oxides was studied for the dry reforming of methane (DRM). The catalysts were prepared by impregnation of the granulated diatomite (D) and characterized by SEM, EDX, H2-TPR, XRD, and AES. It is shown that the addition of 1.5 wt.% La2O3 into the Ni-Co/D composition leads to an increase in the activity of the catalyst, providing a methane conversion that is close under thermodynamic equilibrium conditions in the temperature range of 700‒850 °С. The highest activity is achieved at T = 850 °C, the conversion of methane is 96%, and carbon dioxide is 92%. The addition of lanthanum oxide to the Ni-Co/D composition led to an increase in catalyst stability; after testing in the DRM reaction for 360 min, the deactivation coefficient for methane was 3.4%, and for carbon dioxide 2.5%. While significant deactivation is observed for Ni-Co/D, the deactivation coefficient for methane is 19%, and for carbon dioxide 36%. Many characterization results (SEM, H2-TPR, and XRD) confirm that Ni-Co-La/D has abundant surface oxygen and the presence of spinel structures that contribute to the reactivity of CH4 and CO2, which positively affect its activity.

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“…Bioxide Ni-Сo/D (oxide ratio NiO-Сo ). Heat treatment of the catalysts was carried out in an air stream at 300 °С for 2 h and at 500 °С for 3 h, at a rate of 3 °С/min [28].…”

Section: Preparation Of Catalystsmentioning

confidence: 99%

Section: Testing Of Catalysts and Analysis Of Reaction Productsmentioning

confidence: 99%