Sulphuric Acid
, Large scale/Industrial Preparation- Contact process
Step 1 - S + O2 SO2
4FeS2 + 11O2 2Fe2O3 +
8SO2
Iron pyrites
,Step 2 : 2SO2 + O2 2SO3 +
Catalyst Vanadium pentoxide (V2O5,)
Pressure 1 to 2 atm
Temperature 450 - 500 C
, Step 3 :
SO3 + H2SO4 H 2S 2O 7
Oleum or Pyrosulphuric acid
H 2S 2O 7 + H 2O 2H2SO4
Forms sulphuric acid of the desired
concentration.
, Large scale/Industrial Preparation- Contact process
Step 1 - S + O2 SO2
4FeS2 + 11O2 2Fe2O3 +
8SO2
Iron pyrites
,Step 2 : 2SO2 + O2 2SO3 +
Catalyst Vanadium pentoxide (V2O5,)
Pressure 1 to 2 atm
Temperature 450 - 500 C
, Step 3 :
SO3 + H2SO4 H 2S 2O 7
Oleum or Pyrosulphuric acid
H 2S 2O 7 + H 2O 2H2SO4
Forms sulphuric acid of the desired
concentration.
