I was walking through canadain tire, while looking for "propane and propane accessories" and said just that. There was another person who I heard chuckle as we crossed paths, they knew whats up. Was it you by chance?

I hope so, too, but I don't think that it will. Odds are that the process requires a higher concentration of CO₂ than just the 0.4% in atmospheric air, so this would be only viable in industrial plants - specially the ones producing steel and quicklime.

Another concern that I have is that the process likely requires hydrogen.