Thermally Stable Materials for Selective Oxygen Trapping and Manipulation

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SUMMARY

The discussion focuses on the search for thermally stable materials capable of selectively trapping and manipulating oxygen. Key materials mentioned include finely powdered iron as a commercial oxygen absorber and molten silver for oxygen dissolution. The primary solution for moving absorbed oxygen via electrical current is identified as zirconia, an oxygen ionic conductor commonly used in automotive oxygen sensors, which operates at high temperatures. The conversation highlights the potential for metals to absorb and release oxygen through electrical means, prompting further exploration of this concept.

PREREQUISITES
  • Understanding of oxygen ionic conductors, specifically zirconia.
  • Knowledge of thermally stable materials and their properties.
  • Familiarity with the principles of electrochemistry related to gas absorption.
  • Experience with high-temperature applications in material science.
NEXT STEPS
  • Research the properties and applications of zirconia in oxygen sensing technologies.
  • Explore the mechanisms of oxygen absorption and release in metals under electrical influence.
  • Investigate alternative materials for oxygen trapping, including other ionic conductors.
  • Study the thermal stability of various metals and non-metals in high-temperature environments.
USEFUL FOR

Material scientists, electrochemists, and engineers focused on developing advanced oxygen manipulation technologies will benefit from this discussion.

physea
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Hello!

I am looking for a thermally stable material that will gather oxygen from air selectively.

I suppose many metals can do that? And oxidise? Or maybe liquids?

However, I want to apply an electrical current and either reverse the binding of oxygen or move the bound oxygen across the surface or the material itself.

Can you help me do this?

Thanks!
 
Chemistry news on Phys.org
Many metals and non-metals can chemically react with oxygen in the air. Commercial oxygen absorbers contain just finely powdered iron.
Molten silver dissolves oxygen too.
However, if you want to move absorbed oxygen by applying electric current, you need oxygen ionic conductor.
The most common is zirconia, often stabilized with addition of another oxide. It is used in automotive oxygen sensors.
It requires high temperature for operation.
 
Thanks Henry, very interesting.

Can we have a metal absorb oxygen and then release it by electric current?
 

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