Page 29 - Book of Abstracts

th
8 Biannual Conference on Chemistry - CHEM 08

Catalytic activity of Sr2Mg0.25Ni0.75MoO6 – (SrMoO4, NiO)

Composites as Alternative Anodes for Solid Oxide Fuel Cell
Under Methane Fuel Condition

Lubov S. Skutina , Aleksey A. Vylkov , Dmitry K. Kuznetsov and
1,2
2
1,2
Vladimir Ya. Shur
2
1 Laboratory of Electrochemical Devices Based on Solid Oxide Proton
Electrolytes, Institute of High Temperature Electrochemistry, 620137
Yekaterinburg, Russia; Ural Federal University, 620002 Yekaterinburg,
2
Russia

ABSTRACT

In this study, Sr2Mg0.25Ni0.75MoO6-ySrMoO4 (y=0, 15 и 30 mol.%),
Sr2Mg0.25Ni0.75MoO6-85mol% NiO and NiO-YSZ anode materials were
evaluated as possible negative-electrode materials for SOFCs operated
with hydrocarbon fuels. The phase stability under different atmospheres
(СH4 and CO2) was investigated using thermogravimetric analysis and X-
ray powder diffraction. The catalytic performance of the reduced
materials for methane partial oxidation was evaluated using a quartz
reactor under 800°C. The outlet gas compositions (CH4, CO, CO2 and H2)
were analyzed by mass spectrometer. The possibility of carbon deposition
on the anode material was investigated after experiments in pure methane
and after catalytic activity test. The materials were heated in air up to 1100
° C using thermogravimetric and differential scanning calorimetry to
determine possible carbon burnout. Besides element distribution on the
anode was analyzed by energy-dispersive X-ray spectroscopy.

The present results evidently demonstrate the distinctive character of the
studied materials as alternative anode electrodes which can work in the
methane conditions.

BOOK OF ABSTRACTS CHEM 08 (2020) Page 28