CO2 + H2 Reactions

[bonzoboy]

Are there any commercial processes where CO2 and H2 are used directly to produce a useful hydrocarbon product, such as methanol, ethanol, or possibly all the way to paraffins?

 

[epoisses]

http://en.wikipedia.org/wiki/Fischer_Tropsch

http://www.sasol.com

 

[moltenmetal]

You can run the water gas shift reaction in reverse to reform CO2 and H2 to CO and H2O, then do Fischer-Tropsch style reactions using CO and H2. But if you're starting with a carbonaceous feedstock in the first place to make your hydrogen, it would be energetically foolish to go this route.