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Various sources such as https://news.ycombinator.com/item?id=7679154 speculate that graphene will combust at higher temperatures.

Is this true? Is the flash point/ temperature of combustion for graphene known?

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    $\begingroup$ Graphene is not a material at all, to begin with. $\endgroup$ – Ivan Neretin Jun 22 '17 at 19:04
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    $\begingroup$ I would hardly consider that link a "source"... $\endgroup$ – Zhe Jun 22 '17 at 19:08
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    $\begingroup$ The Wikipedia article for graphene links to a Journal Phys. Chem abstract claiming that it combusts around 350 C. I have no access to the full article with the specific details. $\endgroup$ – airhuff Jun 22 '17 at 19:15
  • $\begingroup$ Graphene is a name for rather diverse materials (size, purity, concentration of defects etc can be different, occasionally stabilizers) so actual behavior may vary. $\endgroup$ – Greg Jun 23 '17 at 14:14
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Graphene combusts at 620 K. See http://pubs.acs.org/doi/abs/10.1021/jp410044v.

It is postulated that it burns at this temperature "because of a large interlayer spacing of graphene sheets (i.e., 5.1 Å)".

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As @airhuff pointed out, the Wikipedia article of graphene says that graphene combusts at 350℃. This statement is taken from another link which states as to why graphene combusts:

it(graphene) has a high specific surface area of ca. 1168 m2 g–1 and starts to burn at 350 °C because of a large interlayer spacing of graphene sheets (i.e., 5.1 Å).

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Graphene is made from carbon atoms, just like diamond and graphite. Just like diamond and graphite, it will burn in oxygen.

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