Can any one tell me the procedure of preparation of 99% pure alchohol ? Or .....Preparation of the fual cell ?

Question

This is highly important for as for the dead line of my project is 23 of this month.

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Answer 1

chemical synthesis, hydration of ethene on industrial scale

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simple distillation wont work for ethanol, if that's what u mean by alcohol. ethanol/water mixture has an azeotropic point at 95 degree with 4-5% water content at one atm. So, you will get a mixture instead [that's why distilled ethanol are sometimes called 95% ethanol]

if you really perfer distillation, you need a fractional distillation column, which heats up the mixture with plates little by little to purify it [please refer to McCabe-Thiele method]. As matter of a fact, that's what ppl used on industrial scale to separate petroleum products.

Answer 2

If you are referring to the "common" usage, alcohol therefore is simply ethyl alcohol (C2H5OH, ethanol, grain alcohol). If this is what you reallly mean, ethyl alcohol has a strong affinity with the water vapor in the atmosphere making it 95% pure when the container is left open. The simplest way to remove the 4% water is by placing a dessicant inside the container, e.g. CaCl2 (calcium chloride), SiO2 (silicon dioxide), CaSO4 (Anhydrous calcium sulfate). You will be able to pour out from this container, 99% ethyl alcohol. Try the experiment. However, once the 99% ethyl alcohol is exposed to the air, the compound will readily absorb water from the air. You can never achieve 100% ethyl alcohol. Consult any Physical Chemistry textbook about azeotrophic mixture. Simple distillation method will not separate the water.

Answer 3

Isolating alcohols requires the use of fractional distillation. Instead of simply evaporating into a condenser and being collected, you need to run the vapor up a distilling column, this creates multiple vaporization-condensation cycles until (almost) pure material is collected and condensed in the condensing column. The size of the distilling column impacts how close of boiling points you can separate (I heard one guy used a gigantic condensing column to separate the two isotopes of carbon in CO2, super close boiling points).

Fuel cells are quite a bit more complicated, the most promising type is the PEMFC (proton exchange membrane fuel cell). You're probably best sticking with the alcohol problem, I once did a 15page report on fuel cells, and all I covered was aquiring and storing hydrogen.

Answer 4

Presuming that you mean normal alcohol which is Ethanol (I'll write it like EtOH from now on), it's impossible to make it more pure than 95% using distillation. if you want 99% alcohol you must remove the water chemically. for example use dry Calcium Oxide (CaO or lime) which will form Ca(OH)2 or Calcium hydroxide which is a solid that can be removed using filtration. or you can use dry salt (NaCl) it won't solve in EtOH but it will solve in water and so it will remove the water from the solution.
I'm not sure what you mean by fual cell. if you mean fuel cell, it's a bit hard to make. for some basic information see this link:
http://en.wikipedia.org/wiki/Fuel_cell
but you can't make one using this information. I ask around and see what I can find out here where I study.
If you want to contact me use the email below so your mail will be in a less crowded mail box.
khosrow.zare(at)gmail.com
I found some books about fuel cells, but I must know what do you want to know about them, so that I can introduce the right book.

Answer 5

Alcohol is easy. You just have to distill it. The first few drops (distilled from rotting matter) will be almost completely pure. While this isn't exactly efficient, it works. Repeat. Repeat... You get the idea.

Answer 6

Hhaaa greast jokes today. however u missed number 3. number 3 is look at behops jokes and image life too busy without them. hahahaha.

Answer 7

Which alcohol?

Answer 8

The authorities have been notified of your criminal behavior.