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Topic: xylene decomposition at 1200 degree C  (Read 5798 times)

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thasan

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xylene decomposition at 1200 degree C
« on: May 20, 2005, 09:43:13 AM »
does anybody know how xylene decomposes by pyrolysis (C8H10== xylene mixture of isomers) at around 1200 degree C?
im not a chemistry student but tried books and web but couldnt find a definite answer :(
pls help

Offline Dude

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Re:xylene decomposition at 1200 degree C
« Reply #1 on: May 20, 2005, 04:44:12 PM »
You would likely eliminate hydrogen to form poly(xylylene) with the para isomer at temperatures up to 950 C
Principles of Polymerization, George Odian, Wiley, 1991, p 315.

At temperatures above 1000 C, I suspect that you would form soot (graphite or some low hydrogen content soot).  

There is also a body of work making carbon nanotubes with xylene, however, this involves the addition of hydrogen.
http://www.ee.psu.edu/grimes/publications/CarbonPaper.pdf

thasan

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Re:xylene decomposition at 1200 degree C
« Reply #2 on: May 24, 2005, 10:51:22 AM »
many thanx for your answer.
i am also growing cnts with ferrocene and xylene.. :)
i will have a look on the book you have mentioned.

MAX

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Re:xylene decomposition at 1200 degree C
« Reply #3 on: June 20, 2005, 11:03:06 AM »
have you find any informations in the Odian's book about the decomposition ?
i'm interrested in that too.

Offline HP

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Re:xylene decomposition at 1200 degree C
« Reply #4 on: June 20, 2005, 03:35:19 PM »
For the pyrolisis of p-hylene you need temperatures above 1000C and vacuum to form poly paraxylene(PPX) after cooling.
If you use substances like cyclophanes you may open pyroticaly their rings in low temp below 600C...
xpp

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