# Are there any chemicals that combine readily with oxygen?

I am designing an industrial process which can remove oxygen from air. This chemical should combine readily with oxygen in the presence of heat.

In particular, I am looking for a chemical with the following properties:

1. Combines readily with oxygen, thus removing the oxygen in air
2. Inexpensive
3. Environmentally friendly (nontoxic)

For point #1, heating is available if it is an endothermic reaction.

I am looking at at an operating temperature of ~$$\pu{800 ^\circ C}$$.

• en.wikipedia.org/wiki/Pyrogallol for example Aug 31, 2015 at 20:38
• Pyrogallol is way too toxic Aug 31, 2015 at 20:46
• At what temperature? Carbon or magnesium would remove oxygen at 1,000 K or higher. Alkaline glucose might be used at room temperature, though it reacts slowly (see faculty.mansfield.edu/bganong/biochemistry/bluebott.htm). More information would be helpful. Sep 1, 2015 at 0:00

If $\ce{CO2}$ is acceptable in the feed gas, along with $\ce{CO}$ and a bit of left-over oxygen, then carbon (coal, charcoal etc.) might do. It's ignition temperature is ~1,000 K.
If you want to absorb only a small amount of O$_2$ to purify an airstream, you should look up gettering. Titanium metal is one of the most popular if you are willing to heat.