[SKRIVA] Nytt svenskt supermaterial: upsalite
- From: Ahrvid Engholm <ahrvid@xxxxxxxxxxx>
- To: "skriva@xxxxxxxxxxxxx" <skriva@xxxxxxxxxxxxx>
- Date: Wed, 24 Jul 2013 17:16:24 +0200
Svenska forskare i Uppsala har av misstag skapat ett nytt, superabsorberande
material som de kallar...upsalite! Det handlar om en konfiguration av
magnesiumkarbonat som har extremt stor yta (800 m2 per gram).
http://io9.com/swedish-researchers-create-an-impossible-material-by-880572412
"Scientists have known about natural and ordered forms of magnesium carbonate,
both with and without water structure, for quite some time. But creating a
water-free disordered version has proven difficult. As early as 1906, German
researchers concluded that the material could not be created in the same way as
other disordered carbonates, namely by bubbling C02 through an alcoholic
suspension. Other studies in 1926 and 1961 came to the same conclusion.
But on one fateful Thursday afternoon in 2011 this all changed. A research
team led by Johan Goméz de la Torre made some slight changes to the synthesis
parameters of an earlier unsuccessful attempt to create a water-free disordered
form of magnesium carbonate — and they left it in the reaction chamber by
mistake! It sat there for the entire weekend, and when the researchers returned
to the lab the following Monday, a rigid gel had formed.
Surprised and excited, they dried the gel and studied it further. They soon
realized that they were onto something.
After a year of further experiments and refinements, upsalite was born."
--Ahrvid
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