Questions tagged [carbon-allotropes]
This tag should be applied to questions about the various allotropes of carbon and their physical or chemical properties. Most important modifications are diamond, graphite, fullerenes, graphene and nanotubes.
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Does a steel pestle corrode while pressing soot?
While experimenting with a few different powders, I noticed the resulting small flakes were ferromagnetic. Then I decided to find out what was the cause: after repeating the experiment with only soot, ...
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Why does graphite have a higher standard molar entropy than diamond?
It is known that graphite (5.7 J/K mol) has a higher standard molar entropy than diamond (2.4 J/K mol) (data from Physical Chemistry by Atkins). I understand that this must be due to the structural ...
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Does concept of degree of unsaturation not work for fullerene molecule?
Commonly known buckminsterfullerene has molecular formula C60 if we calculate it's degree of unsaturation by formulae, it comes out to be 61 and it is also known that this fullerene has 12 pentagon ...
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Ablation of pyrolitic graphite utilizing electrochemical means
I am looking for a process to ablate the surface of a pyrolytic graphite (PG) sample.
I am thinking that an electrochemical process might be the answer; however, since this is not my field, I am ...
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Why is coal and charcoal a good fuel, but not graphite?
Correct me if I'm wrong, but coal(after coking) and charcoal are essentially hard dry lumps of pure carbon.
But of course so is graphite. I understand of course the structure is different lending them ...
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Where do lactone groups occur in graphene oxides and how are they identified using FTIR measurements?
Usually, the literature (for example, Serodre et al. [1]) shows the occurrence of lactones in graphene oxides through potentiometric titration measurements. In the nanosheets, do these groups occur in ...
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When performing electrolysis of brine, are carbon steel electrodes ok? [closed]
Are carbon steel electrodes better? Do they both eventually corrode? Is there any cheap electrode that stays inert indefinitely?
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Are carbon nanotubes and graphene very flammable?
The reason I ask is because carbon is quite flammable in virtually every shape we encounter in nature. Even diamonds burn as a matter of fact. And after I just saw some steel wool burn easily, I ...
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How do other elements fit into a diamond's carbon lattice (e.g. nitrogen in yellow diamonds)
Traditional pure-carbon diamonds have a simple structure (tetrahedral, if I'm not mistaken). But common types of diamonds have other elements within them. For example, yellow diamond has nitrogen in ...
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What is the inherent mechanism in carbocatalysis?
When checking non-metallic catalysis materials, one mentioned example is that of carbocatalysis; using heterogeneous carbon structure to catalyze a reaction (Not to be confused as a support surface ...
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What gas particles are formed when diamond turns to gas?
If you heat up diamond away from oxygen (air completely) until the solid diamond is now gaseous, what are the gas particles made of? Just the element carbon without a charge?
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Name for long chain of double-bonded carbon atoms
Long ago (over 10 years), I read an article in my father's copy of Chemistry World on a substance consisting of many carbon atoms in a chain double bonded to each other:
$$\ldots\ce{=C=C=C=C=C=}\ldots$...
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What is the maximum amount of carbon atoms that can comprise a fullerene?
As the fullerene sum formula can be defined as $\ce{C_n}$ with $n$ being any even integer number, is there any fundamental theoretical limit as to how big $n$ can get?
If there is no limit to the ...
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Are coke (solid fuel from coal) and charcoal same thing obtained from different sources?
As coke is obtained from destructive distillation of coal, and charcoal from destructive distillation of substance other than coal (like wood and animal bones), are both the same thing, with charcoal ...
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Why don't carbon nanotubes behave like quantum dots?
If carbon nanotubes (CNTs) have the size required to have an bound electron energy state, why don't CNTs behave like quantum dots, such as having optical tunability, amongst other properties?
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