Carbon Materials and Nanotechnology by Krueger A. PDF

By Krueger A.

ISBN-10: 3527318038

ISBN-13: 9783527318032

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The term glassy carbon originates from its aspect that resembles black glass. It can only be processed with diamond tools, and also chemically it is very stable. It may be applied, for example, as material for electrodes or crucibles. Activated Carbon With a surface of 300–2000 m2 g−1 and a pore diameter of 1–5 nm, activated carbon is an outstanding adsorbent for a multitude of substances. It is produced by gentle heating of organic precursors like wood, turf or coconut peel, but also of pit-coal etc.

On these occasions, carbon is engaged in three-center two-electron bonds (for example, Al2(CH3)2). They are, however, only possible with more electropositive coordination partners. Due to its medium position in the periodic table, carbon reacts with oxygen as well as with hydrogen and may adopt any oxidation number from +4 to −4. Methane (CH4) and carbon dioxide (CO2) represent the extremes of this range. Carbon monoxide and carbon dioxide, respectively, are obtained from reacting carbon with water or oxygen at a sufficiently high temperature.

H. Jones, who chose himself the pseudonym Daedalus, published theoretical treatises on fullerene-shaped objects. However, no attention of any kind was bestowed upon his speculations about hollow structures entirely made from carbon atoms. A first theoretically substantiate paper on C60 was published by E. Osawa in 1970. He let himself be inspired by his son’s soccer ball while reflecting on superaromatic π-systems and postulated an analogous structure with icosahedral symmetry for the C60-molecule, predicting its stability from Hückel calculations.

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Carbon Materials and Nanotechnology by Krueger A.


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