BoyntonStu
04-18-2009, 08:54 PM
http://en.wikipedia.org/wiki/Kipp%27s_apparatus
Kipp's apparatus, also called Kipp generator, is an apparatus used in chemical laboratories for preparation of small volumes of gases. It is named after its inventor Petrus Jacobus Kipp.
The most commonly known use is for preparation of hydrogen sulfide in qualitative inorganic analysis by reaction of sulfuric acid with ferrous sulfide FeS, carbon dioxide by reaction of hydrochloric acid with calcium carbonate, and hydrogen by reaction of an acid with a suitable metal.
The apparatus is made of three vertically stacked cylinders, roughly resembling a snowman. The solid material (e.g., iron sulfide) is placed into the middle cylinder, the acid is put into the top cylinder. A tube extends from the top cylinder into the bottom cylinder. The middle cylinder has a tube with a stop**** attached, which is used to draw off the evolved gas. When the stop**** is closed, the pressure of the gas in the middle cylinder rises and expels the acid back into the top cylinder, until it is not in contact with the solid material anymore, and the chemical reaction stops.
Kipp generators are usually made of glass, or sometimes of polyethylene.
See photo in Wiki.
Another way I designed is to use a generator and an adjacent reservoir.
Fill the generator with shredded Aluminum.
Fill the reservoir with NaOh.
There is a "bubbler" tube and a top output in the generator which is connected to a "bubbler" tube in the reservoir. The reservoir also has a second top connector.
To begin producing Hydrogen, pump air (squeeze bulb is fine) into the reservoir and it will force the NaOH into the generator.
Close a valve between the generator and the reservoir.
You are now producing Hydrogen.
To stop the reaction, open the valve between the generator and the reservoir and close the generator output line.
The Hydrogen pressure will force the NaOH back into the reservoir and the reaction will stop.
There are unanswered questions:
How much heat is generated and is cooling required?
How expensive is it to replenish the spent NaOH?
Other than these issues, scrap aluminum is easy to come by.
BoyntonStu
Kipp's apparatus, also called Kipp generator, is an apparatus used in chemical laboratories for preparation of small volumes of gases. It is named after its inventor Petrus Jacobus Kipp.
The most commonly known use is for preparation of hydrogen sulfide in qualitative inorganic analysis by reaction of sulfuric acid with ferrous sulfide FeS, carbon dioxide by reaction of hydrochloric acid with calcium carbonate, and hydrogen by reaction of an acid with a suitable metal.
The apparatus is made of three vertically stacked cylinders, roughly resembling a snowman. The solid material (e.g., iron sulfide) is placed into the middle cylinder, the acid is put into the top cylinder. A tube extends from the top cylinder into the bottom cylinder. The middle cylinder has a tube with a stop**** attached, which is used to draw off the evolved gas. When the stop**** is closed, the pressure of the gas in the middle cylinder rises and expels the acid back into the top cylinder, until it is not in contact with the solid material anymore, and the chemical reaction stops.
Kipp generators are usually made of glass, or sometimes of polyethylene.
See photo in Wiki.
Another way I designed is to use a generator and an adjacent reservoir.
Fill the generator with shredded Aluminum.
Fill the reservoir with NaOh.
There is a "bubbler" tube and a top output in the generator which is connected to a "bubbler" tube in the reservoir. The reservoir also has a second top connector.
To begin producing Hydrogen, pump air (squeeze bulb is fine) into the reservoir and it will force the NaOH into the generator.
Close a valve between the generator and the reservoir.
You are now producing Hydrogen.
To stop the reaction, open the valve between the generator and the reservoir and close the generator output line.
The Hydrogen pressure will force the NaOH back into the reservoir and the reaction will stop.
There are unanswered questions:
How much heat is generated and is cooling required?
How expensive is it to replenish the spent NaOH?
Other than these issues, scrap aluminum is easy to come by.
BoyntonStu