Partial oxidation of methane to synthesis gas: Novel catalysts based on neodymium–calcium cobaltate–nickelate complex oxides
- Authors: Dedov A.G.1, Shlyakhtin O.A.2, Loktev A.S.1, Mazo G.N.2, Malyshev S.A.2, Tyumenova S.I.1, Baranchikov A.E.3, Moiseev I.I.1
-
Affiliations:
- Gubkin State University of Oil and Gas (National Research University)
- Moscow State University
- Kurnakov Institute of General and Inorganic Chemistry
- Issue: Vol 58, No 1 (2018)
- Pages: 43-47
- Section: Article
- URL: https://journals.rcsi.science/0965-5441/article/view/180001
- DOI: https://doi.org/10.1134/S0965544118010061
- ID: 180001
Cite item
Abstract
Novel catalysts based on neodymium–calcium cobaltate–nickelate complex oxides for the partial oxidation of methane to synthesis gas have been synthesized and studied using catalyst precursors with the general formula NdCaCo1–xNixOn (x = 0, 0.2, 0.4, 0.6, 0.8, 1) prepared by the solid state synthesis method. It has been shown that the synthesized samples form a series of solid solutions with a K2NiF4 structure at x ≤ 0.8 or a rhombically distorted K2NiF4 structure at x = 1. The products of conversion of the resulting precursors in a methane–oxygen mixture at high temperatures have shown high methane conversions and synthesis gas yields. The highest values of these parameters have been achieved in the presence of catalysts synthesized by the reduction of NdCaCo0.4Ni0.6On and NdCaNiOn precursors. The complete replacement of cobalt with nickel has led to an increase in the synthesis gas yield; however, it has been found that the resulting catalyst is prone to carbonization. It has been determined that an optimum nickel to cobalt ratio in the catalyst composition provides the formation of a carbonization-resistant catalyst.
About the authors
A. G. Dedov
Gubkin State University of Oil and Gas (National Research University)
Email: al57@rambler.ru
Russian Federation, Moscow
O. A. Shlyakhtin
Moscow State University
Email: al57@rambler.ru
Russian Federation, Moscow
A. S. Loktev
Gubkin State University of Oil and Gas (National Research University)
Author for correspondence.
Email: al57@rambler.ru
Russian Federation, Moscow
G. N. Mazo
Moscow State University
Email: al57@rambler.ru
Russian Federation, Moscow
S. A. Malyshev
Moscow State University
Email: al57@rambler.ru
Russian Federation, Moscow
S. I. Tyumenova
Gubkin State University of Oil and Gas (National Research University)
Email: al57@rambler.ru
Russian Federation, Moscow
A. E. Baranchikov
Kurnakov Institute of General and Inorganic Chemistry
Email: al57@rambler.ru
Russian Federation, Moscow
I. I. Moiseev
Gubkin State University of Oil and Gas (National Research University)
Email: al57@rambler.ru
Russian Federation, Moscow