ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7

Published monthly
 

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

Gaukhar E. Ergazieva, Moldir M. Telbayeva, Anna N. Popova, Zinfer R. Ismagilov, Kusman Dossumov, Laura K. Myltykbayeva, Vadim G. Dodonov, Sergey A. Sozinov, and Almagul I. Niyazbayeva

The Institute of Combustion Problems, Almaty, Kazakhstan

 

E-mail: ergazieva_g@mail.ru

Received: 11 September 2020  Accepted: 13 January 2021

Abstract:

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).

Keywords: Dry reforming of methane; Bimetallic catalyst; Solution combustion method

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-021-01516-y

 

Chemical Papers 75 (6) 2765–2774 (2021)

Monday, December 02, 2024

IMPACT FACTOR 2023
2.1
SCImago Journal Rank 2023
0.381
SEARCH
Advanced
VOLUMES
© 2024 Chemical Papers