"Tim Streater" wrote in message
.. .
In article , Chris Hogg
wrote:

On Tue, 28 Apr 2015 16:38:16 +0100, Tim w wrote:

This could really change a lot of things

http://www.ibtimes.co.uk/audi-create...-using-just-ca
rbon-dioxide-water-1498524

Why do you need to heat water to 800C to electrolyse it? Electrolysis
of water takes place very well at 20C, to give oxygen and hydrogen.
Maybe it's an efficiency thing*. And I would have thought it better to
capture the CO2 from coal- or gas-burning power stations than from
ambient air, which would surely be very inefficient given the amount
of air you'd have to process.

Unfortunate name for the German federal minister of education and
research, Dr Johanna Wanka!

*yes it is. Just looked it up. See
http://en.wikipedia.org/wiki/High-te...e_electrolysis

Steam at those sorts of temps is quite corrosive of e.g. stainless
steel. What is being proposed for transporting the steam?

Drivel.