Oscillating syngas production on NiO/YSZ catalyst from methane oxidation

被引：8

作者：

Chien, Andrew C. ^{[1
,2
]}

Liao, Brian Y. ^{[1
]}

机构：

[1] Feng Chia Univ, Dept Chem Engn, Taichung 40724, Taiwan

[2] Feng Chia Univ, Green Energy Dev Ctr, Taichung 40724, Taiwan

来源：

RSC ADVANCES | 2020年 / 10卷 / 45期

关键词：

OXIDE FUEL-CELLS; ELECTROCHEMICAL PROMOTION; BEHAVIOR; ACTIVATION; TOLERANCE; OPERATION; ANODES; SOFCS; MARS;

D O I：

10.1039/d0ra02051f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Synthesis gas was produced by methane oxidation on a NiO/YSZ cermet by interrupting the oxygen flow. Stopping the oxygen flow provoked the diffusion of lattice oxygen in the cermet, which in turn replenished the Ni-O bond that was consumed by methane. Resuming the oxygen flow brought about the activation of oxygen on the extrinsic vacancy site of YSZ. The activation, followed by the diffusion of oxygen and a Ni/NiO redox cycle, led to oscillatory syngas production. The infrared and mass spectroscopy results provide the reaction mechanism that governs the oxidation of methane on the NiO/YSZ cermet. This study presents a technique that can be applied to the catalysis of other metal/anion or cation conductor systems.

引用

页码：26693 / 26698

页数：6

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