I have been using Manganese Dioxide to catalize the decomposition of H2O2 into water and oxygen. Manganese Dioxide is a problem because it turns water
dark brown even in small quantities. Does anyone know of any other soluble catalysts for H2O2. I read somewhere that salts of certain metals may work.
I would really appreciate some help.
Thanks,
mericad193724Maja - 4-6-2006 at 07:28
Actually if you will use button "SEARCH" you will find big topic on your subject.mericad193724 - 4-6-2006 at 08:02
Sorry, I should have done a search first.
Anyway...I did a lot of searching and found that Potassium Permanganate and Iodine can act as catalysts, both of which are soluble.
Are there any others?
thanks,
Maricad193724unionised - 4-6-2006 at 10:10
Blood works though it's not strictly a solution IIRC there's a coblat tartrate complex that works too. What do you want the stuff for?UniversalSolvent - 4-6-2006 at 10:24
I was wondering the same. Generally with this reaction it seems the goal is to obtain 02 for some purpose; why is the water important?neutrino - 4-6-2006 at 12:14
Potassium permanganate will react with hydrogen peroxide to form manganese dioxide. If you are concerned about MnO<sub>2</sub>, avoid
KMnO<sub>4</sub>.BromicAcid - 4-6-2006 at 15:37
As said, use the search engine. There are at least two threads that I can recall but only one that I found within 15 seconds of searching:
Originally posted by unionised
Blood works though it's not strictly a solution IIRC there's a coblat tartrate complex that works too. What do you want the stuff for?
I hear liver is a good source too(lots of blood go figure). But if you want something goopy as opposed to a liquid then liver might be a better
choice?Jome - 5-6-2006 at 02:03
Wouln't LOTS of transition metal salts do? Like Cu, Co, Ni, Fe compounds?mericad193724 - 5-6-2006 at 05:37
thanks for the help guys,
I am trying to avoid aything that is not soluble and will strongly change the color of the water.
This is somewhat for a school related project, I use my chemistry teacher's lab for my expeiments after school. Im not making anything dangerous.
I was thinking catalase, the enzyme that makes liver work, could work for me...but my catalyst needs to be a dry powder, I tried veal liver, but I
can't squeeze the liquid and evaporate it, I don't think you can get powdered catalase.
What transition metals will due, can you name some compounds, Ferric Chloride maybe, Zinc Cloride???
thanks a lot,
meriad193724Tacho - 5-6-2006 at 08:00
Mix manganese dioxide with sodium silicate. Add some acid to make silicagel. Let it dry. Use the large, black, filtrable crystals as your fully
reciclable catalyst.
when you get 3% or 6% H2O2 from a pharmacy it says it is "stabilized. " What does this mean, is there some additive that makes it less reactive or
something???
What is the process by which it is "stabilized."
thanks,
Mericad19372412AX7 - 5-6-2006 at 10:48
The ingredients list shows phosphoric acid, I bet. Read labels........
TimFleaker - 5-6-2006 at 14:32
Any halide salt should catalyze the decomposition of hydrogen peroxide, assuming it is concentrated enough. Use potassium iodide for best results.