Thread: Supported liquid phase catalysts

can anyone tell me what supported aqueous phase catalysts are? or maybe direct me to some site explaining the process of supporting in liquid phase?

supported aqueous phase catalysts

My first step would be to suggest you go to the google homepage and type in 'search engine' - find out how to use one then type in the 4 words above, if nothing happens then ask your mom to show you where the enter key is and how to use it.. :wink:

dude, do YOU know where the enter key is?
Google is totally useless reg my requirement and so is any other search engine. so dont give me any gosh darned crap about google.

Then have a look in Perry's Chemical Engineering Handbook - if you do not have a copy, ask at your local library.

Originally Posted by PritishKamat

can anyone tell me what supported aqueous phase catalysts are? or maybe direct me to some site explaining the process of supporting in liquid phase?

I'm not familiar with aqueous phase processes but am somewhat familiar with the Fischer-Tropsch slurry column process, in which the liquid medium is a hydrocarbon mixture, not water. However the principle is presumably the same: the catalyst is usually a metal (cobalt, iron) and it is impregnated onto a ceramic substrate, possibly alumina or silica. This substrate is the "support". The particles are quite fine (think of sand or smaller) and are suspended in the liquid medium by the effect of gas being bubbled through it. The gas is converted to liquid by the catalytic reaction, hence the process is called gas-to-liquids (GTL). Try googling slurry reactors, or Fischer-Tropsch for a start.

nope no help. Supported aqueous phase catalysts are basically metal complexes, whose aqueous solutions are adsorbed onto some high surface (hydrophilic) area support. Beyond this, i've got nothing

Originally Posted by PritishKamat

nope no help. Supported aqueous phase catalysts are basically metal complexes, whose aqueous solutions are adsorbed onto some high surface (hydrophilic) area support. Beyond this, i've got nothing

Could it be something like egg whites in mayonnaise?

They sometimes refer improperly in my opinion to state, meaning solid, liquid or gas, as phase. Colloids often are multi state or multi phase substances. In what I believe they called at one time catalysis, heterogeneous.

Hdrophilic can be proteins like egg whites, or starches, gums or, corn starch or arrowroot. That bind or absorb water.

By finely dividing metals, you can get them to become suspended in aqueous solutions. I have seen this.

Water is a hydrogen based compound in the sodium and potassium family, hydrogen is a theoretical alkali metal. Oil is a hydrocarbon. Egg whites combine the two substances in a colloid, that becomes a solid.

Colloidal graphite is a colloid in certain oils.


Sincerely,


William McCormick

Is this in relation to fuel cells?

Here is a PDF I found (with Google) that might be useful. :?

Thanks KALSTER its a real help.

By the way, Mr. McCormick stop wasting our valuable time. Plus, posting stupid articles adds a lot to global warming. Good day.

Originally Posted by PritishKamat

Thanks KALSTER its a real help.

By the way, Mr. McCormick stop wasting our valuable time. Plus, posting stupid articles adds a lot to global warming. Good day.

What was incorrect about my attempt to understand your question? I thought I brought up some interesting things about what you touched on.


Can you tell me exactly what you feel is not correct, or should not be posted?



Sincerely,


William McCormick

Mr McCormick, do you even know what a catalyst is or maybe, how it works? If you can answer this without referring to wikipedia on the other tab of your browser, I just might apologise. Maybe.