USC research was reported on the following link a while back:
http://insights.globalspec.com/article/2158/method-to-convert-co2-to-methanol?frmtrk=cr4digest&et_rid=614380648&et_mid=82898642
I think this has some merit. They report that the homogeneous Ruthenium catalyst is good for about six cycles of operation. Surely there is an easy way to restore the catalyst, or at least recover the Ruthenium (which is sort of expensive, as I recall). The reaction obviously requires 3 moles H2 per mole CO2, with methanol and water 1 mole each as products. What were they sourcing the H2 from?
There was no cost analysis in the article, and perhaps that is confidential, but it is too bad. All that was mentioned beyond this was the process temperature range and that it is too expensive to use this for methanol while oil is in the $30/bbl range.
Isn't that just a bit vague? Methanol is so useful in industry, and is usually made from petroleum through various processes. What are the potential heat sources to keep a material in the 125 to 150 °C range? Did they consider CSP, possibly using the coolant for PV cells as reaction heating medium? Then one could have more bang from his buck?
Any opinions how to economize this process (other than a massive scale-up = massive economic hemorrhage)?
"Almost" Good Answers: