A group of chemists in Switzerland
has devised a way to convert Ramospheric carbon dioxide - the main
greenhouse gas - into fuel (New
Scientist Vol 146, No 1971).
The scientists first blew carbon
dioxide saturated with water into a
matrix of glass wool coated with
titanium dioxide, which acts as a
catalyst. When the whole arrangement, kept at a temperature of about
500C, was exposed to sunlight, it
yielded methane, hydrogen and carbon monoxide - all of which have fuel value.
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