Effect of preparation method on the activity of bimetallic Ni-Co/Al2O3 catalysts for dry reforming of methane


Ergazieva G.E. Telbayeva M.M. Popova A.N. Ismagilov Z.R. Dossumov K. Myltykbayeva L.K. Dodonov V.G. Sozinov S.A. Niyazbayeva A.I.
June 2021Springer Science and Business Media Deutschland GmbH

Chemical Papers
2021#75Issue 62765 - 2774 pp.

Ni-Co/γ-Al2O3 bimetallic catalysts were synthesized by capillary impregnation (CI) and solution combustion methods (SC). Catalysts tested in dry methane reforming (DRM), characterized by XRD, H2-TPR, SEM, small-angle X-ray scattering. Preparation method plays an important role in regulating the textural and morphological properties of catalysts and provides a difference in indices of their activity. Synthesis of Ni-Co/γ-Al2O3 by SC in comparison with CI method leads to formation of solid solution of NiCo2O4 with a CSR size of 21 nm, increases the proportion of metal ions (Ni, Co) reduced at temperatures of 400–700 °C, uniform distribution of nanosized particles of active phase on carrier surface. At comparatively low reaction temperature (600 °C) on sample synthesized by SC, degree of methane conversion is higher compared to sample prepared by CI, XCH4-69%, XCH4-65%, respectively. SC provides an efficient way to develop an active catalyst for DRM at low temperatures (600–750 °C).

Bimetallic catalyst , Dry reforming of methane , Solution combustion method

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The Institute of Combustion Problems, Bogenbai Batyr Str., 172, Almaty, 050012, Kazakhstan
Institute of Coal Chemistry and Material Science SB RAS, pr. Sovetskiy 18, Kemerovo, 650000, Russian Federation
Faculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, Al-Farabi Str., 71, Almaty, 050040, Kazakhstan

The Institute of Combustion Problems
Institute of Coal Chemistry and Material Science SB RAS
Faculty of Chemistry and Chemical Technology

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