reaction consuming CO2
reaction consuming CO2
(OP)
A sealed tank is filled with gaseous CO2 at 200F and 200Psi.
Is there any substance which if introduced in the tank could react with CO2 and reduce the pressure?
Thanks
Gio1
Is there any substance which if introduced in the tank could react with CO2 and reduce the pressure?
Thanks
Gio1





RE: reaction consuming CO2
RE: reaction consuming CO2
unfortunately ice is out of question for other reasons. Would Mg react with gaseous CO2?
RE: reaction consuming CO2
Yes. Just Google for magnesium and carbon dioxide and you'd get plenty of information.
RE: reaction consuming CO2
Yes, I have looked but all I found were examples of magnesium reacting with solid CO2 (dry ice). Would the same reaction occur if the CO2 was in gaseous state? (Perhaps it would be slower?)
RE: reaction consuming CO2
Magnesium oxide could be better to absorb gaseous CO2. See, for example,
RE: reaction consuming CO2
You could use a reactive amine like the one I'm familiar with, Hexamethylene Diamine. HMD reacts readily with CO2 to form HMD carbonate.
RE: reaction consuming CO2
I guess you refer to
2 LiOH + CO2 ? Li2CO3 + H2O
But would the above reduce the pressure in the sealed tank? (water vapour would replace CO2 - is that more dense?)
Thanks
Gio1
RE: reaction consuming CO2
I meant
2 LiOH + CO2 --> Li2CO3 + H2O
My concern is that H2O (vapour) is being produced which could rise the pressure - is that true?
RE: reaction consuming CO2
Here is a very good treatise on CO2 control by Dr. James E. Atwater. The first is the LiOH reaction and the second is about the all the methods used for reduction of CO2 in an enclosed environment. There may be some other systems if the human factor doesn't enter the picture.
http://oregonstate.edu/~atwaterj/lioh.htm
http://oregonstate.edu/~atwaterj/co2.htm
RE: reaction consuming CO2
At 200F the vapor pressure of water is less than 15 psia - far less than 200 psi.