Sciencemadness Discussion Board

Cl2 & carbon

aeacfm - 23-5-2011 at 11:25

does chlorine corrosive to carbon electrode ? if yes what is the corrosion products ?

plante1999 - 23-5-2011 at 11:27

not realy...

aeacfm - 23-5-2011 at 12:18

Quote: Originally posted by plante1999  
not realy...


what is the not really

blogfast25 - 23-5-2011 at 13:00

aeactm:

Reactivity of any element towards any other is extremely dependent on conditions, mainly temperature, concentration and pressure. Put like you did your question is more or less meaningless...

aeacfm - 23-5-2011 at 13:40

ok , during electrolysis of brine (sodium chloride 3 %) using carbon electrodes i found in the anodic area particles like carbon ( great amount and c electrode continued in producing these particles during electrolysis) i surprized as i know that c electrode is corrosion resistant ? so is this corrosion or erosion or what?if so what is the corrosion products


plante1999 - 23-5-2011 at 13:51

ok now i could help you , no the carbon only get to fine powder , it doesn't react.

aeacfm - 23-5-2011 at 14:03

Quote: Originally posted by plante1999  
ok now i could help you , no the carbon only get to fine powder , it doesn't react.


C get to fine powder so this is erosion ! isnt it

ScienceSquirrel - 23-5-2011 at 14:15

Sometimes undefined reactions can occur to form minor products with break up of the material.
Chemists like defined reactions with discrete reactants and products but things are not always like that.

LanthanumK - 23-5-2011 at 15:45

Every time I use carbon rods for electrolysis more than a few hours, they start eroding.

aeacfm - 23-5-2011 at 15:58

Quote: Originally posted by LanthanumK  
Every time I use carbon rods for electrolysis more than a few hours, they start eroding.


in brine electrolysis it is only few minutes

IrC - 23-5-2011 at 18:21

I think consideration should be given to possible binders (if any) used to make a rod from the carbon. Clay is used as a binder to make a graphite rod called a pencil as example. Depending upon your source of carbon rods I would think the possibility that the binder is being eroded should be considered. I ran into this using rods scrapped from dead batteries once upon a time.


aeacfm - 26-5-2011 at 10:00

Quote: Originally posted by IrC  
I I ran into this using rods scrapped from dead batteries once upon a time.


i use the same source of carbon electrode , so not carbon it self it is only the binder which eroded
but for carbon electride with no binders will this erosion happen