Chien AC, Liao BY. Oscillating syngas production on NiO/YSZ catalyst from methane oxidation.
RSC Adv 2020;
10:26693-26698. [PMID:
35515799 PMCID:
PMC9055530 DOI:
10.1039/d0ra02051f]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 06/28/2020] [Indexed: 11/21/2022] Open
Abstract
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.
Synthesis gas was produced by methane oxidation on a NiO/YSZ cermet by interrupting the oxygen flow.![]()
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