A planar solid oxide oxygen-ion conductor membrane reactor, method of manufacture and use

By utilizing a planar solid oxide oxygen ion conductor membrane reactor and electrochemically driven by an LSGM support and a BSCF-SDC composite coating, a highly efficient and low-energy-consumption deep deoxygenation of argon was achieved, solving the problem of insufficient argon purity in traditional methods and making it suitable for high-end applications.

CN120079207BActive Publication Date: 2026-07-21SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Filing Date
2025-03-13
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing argon purification methods suffer from problems such as large equipment size and high energy consumption, limited adsorbent capacity, or the introduction of new impurities, making it difficult to achieve deep removal of trace amounts of oxygen, especially in high-end applications where the required argon purity is not met.

Method used

A planar solid oxide oxygen ion conductor membrane reactor is used to achieve oxygen-argon separation by electrochemically driving the selective migration of oxygen ions, using LSGM as the support, BSCF-SDC composite coating as the electrode, and combining silver wire conductors and power supply.

Benefits of technology

It achieves high purification of argon gas, with an oxygen concentration of less than 10 ppm, low energy consumption, and good stability, making it suitable for semiconductor manufacturing, metal smelting, and photovoltaic material processing.

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Abstract

The present application belongs to the technical field of electrochemical gas separation and purification, and particularly relates to a flat-plate solid oxide oxygen ion conductor membrane reactor, a preparation method and application, and is particularly suitable for removing trace oxygen impurities; the solid oxide oxygen ion conductor membrane reactor adopts LSGM electrolyte, and composite material BSCF-SDC is used as the cathode and the anode; the membrane reactor can realize high removal of trace oxygen in argon under the condition of 750-900 DEG C and 1-2.0 V, so that the oxygen content can be lower than 10 ppm; the membrane reactor has the advantages of low energy consumption, high stability, no secondary pollution and the like, and is suitable for preparation of high-purity argon in the fields of semiconductor manufacturing, metal smelting and the like.
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