| T O P I C R E V I E W |
| storni |
Posted - 02/10/2012 : 04:26:26 AM
hi everyone!
i study desorption from surfaces and I've been trying to fit the desorption curve with origin but im not sure where to start..
the desorption curve is given by arrhenius equation
-dq/dt = - B dq/dT = A q^n exp(-E /RT), n = 0, 1 or 2
and my desorption curves (tpd) look like this:
http://www.azonano.com/work/dGsX0HlSy259g2RTE3U9_files/image004.gif
how can i start to fit any of these curves?
any help would be greatly appreciated!
~storni |
| 1 L A T E S T R E P L I E S (Newest First) |
| storni |
Posted - 02/10/2012 : 06:00:06 AM
I think actually I could try fitting these curves with a Maxwell Boltzmann distribution since they look a lot like:
http://www.chemistry.wustl.edu/~edudev/LabTutorials/Airbags/images/maxwell.jpg
In origin, I only find "Boltzmann" as a possibility of fit but I'm not sure how to initalize the parameters.
quote:
Originally posted by storni
hi everyone!
i study desorption from surfaces and I've been trying to fit the desorption curve with origin but im not sure where to start..
the desorption curve is given by arrhenius equation
-dq/dt = - B dq/dT = A q^n exp(-E /RT), n = 0, 1 or 2
and my desorption curves (tpd) look like this:
http://www.azonano.com/work/dGsX0HlSy259g2RTE3U9_files/image004.gif
how can i start to fit any of these curves?
any help would be greatly appreciated!
~storni
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