-cyan-
Harmless
Posts: 13
Registered: 5-2-2007
Location: germany
Member Is Offline
Mood: No Mood
|
|
oxidation of PH3 to P
Hiho,
Its maybe a stupid question, but, will it be possible to oxidize PH3 to white P with Fe(III)-salts? (potential of PH3-->P + 3H+ + 3 e- = -0,06V //
Fe3+ + 3 e- <--> Fe = -0,04V)
thx&greetz
|
|
|
guy
National Hazard
Posts: 982
Registered: 14-4-2004
Location: California, USA
Member Is Offline
Mood: Catalytic!
|
|
You need to consider Fe3+ + e- --> Fe2+ Eo= 0.74V
It will probably oxidize it all the way to phosphoric acid. Not best to do it in water.
|
|
|
-cyan-
Harmless
Posts: 13
Registered: 5-2-2007
Location: germany
Member Is Offline
Mood: No Mood
|
|
do u have a suggestion how i could oxidize it only to P not to H3PO3 or H3PO4 ?
|
|
|
BromicAcid
International Hazard
Posts: 3253
Registered: 13-7-2003
Location: Wisconsin
Member Is Offline
Mood: Rock n' Roll
|
|
I mention in the phosphorous thread, IIRC, that running phosphine through nickel <sup>2+</sup> salts leads to a nickel/phosphorus mixture
that may prove separateable (details were sparse as I remember) check through the thread for the exact quotation.
|
|
|
evil_lurker
National Hazard
Posts: 767
Registered: 12-3-2005
Location: United States of Elbonia
Member Is Offline
Mood: On the wagon again.
|
|
Run the gas thru a tube heated up to 700-800ºC.
PH3 liberates H2... the reaction is irreversable.
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
