Mar
15
2009

Maximizing surface area vs hydrogen storage

MOF-74: hydrogen storage tank: MOF-74 resembles a series of tightly packed straws comprised mostly of carbon atoms (white balls) with columns of zinc ions (blue balls) running down the walls. Heavy hydrogen molecules (green balls) adsorbed in MOF-74 pack into the tubes more densely tha
MOF-74: hydrogen storage tank: MOF-74 resembles a series of tightly packed straws comprised mostly of carbon atoms (white balls) with columns of zinc ions (blue balls) running down the walls. Heavy hydrogen molecules (green balls) adsorbed in MOF-74 pack into the tubes more densely thaCourtesy NIST

Chemistry happens where molecules touch

Chemical interactions happen only when molecules "touch". To maximize these interactions simply maximize the surface area of the material.

More than an acre of surface in each gram

Scientists are now creating materials so porous that one gram of material (smaller than a pea) has more surface area than a football field (~4000 sq. meters).

MOF-74 (pictured) can soak up more unpressurized hydrogen than if the hydrogen were compressed into a solid. Until recently the threshold for surface area was 3,000 square meters per gram. Then in 2004, a U-M team reported development of a material known as MOF-177 (metal-organic frameworks) that has the surface area of a football field.

New material breaks surface area record

"Pushing beyond that point has been difficult," Matzger said, but his group achieved the feat with the new material, UMCM-2 (University of Michigan Crystalline Material-2), which has a record-breaking surface area of more than 5,000 square meters per gram. J of Amer Chem

Learn more
New Nanoporous Material Has Highest Surface Area Yet
More Solid than Solid: A Potential Hydrogen-Storage Compound

Your Comments, Thoughts, Questions, Ideas

rayiaharris's picture
rayiaharris says:

wierd... but interesting

posted on Mon, 03/16/2009 - 10:03am
Sean Teteak's picture
Sean Teteak says:

this is a really good link and i learnded alot from it my teacher liked it to

posted on Fri, 06/05/2009 - 9:21am
Vince's picture
Vince says:

Are these "magic" compounds moisture stables, cheap and large scale available ?

Heats of adsorption are also crucial parameters to reach DOE targets at room temperature... Microporosity seems to be as interesting as gigantic mesoporous compounds...

Anyway, these results are impressive...

posted on Fri, 11/05/2010 - 10:07am
EdwardThirlwall's picture
EdwardThirlwall says:

A very interesting article on increasing storage by first increasing its surface area. At first, the two factors do not show any obvious signs of connection, but after reading through, it seems sensible and kind of apparent too. Now we know what we need to do in order to increase the hydrogen storage and that is not to increase the mass or volume but to increase its surface area.

posted on Tue, 06/18/2013 - 2:30am
michaelmaloney's picture
michaelmaloney says:

It sounds logical that by increasing the surface area, you will eventually achieve a greater amount of storage. Those 2 factors definitely have a relation if you were to look at them from a wider perspective. The scientists have definitely managed to tackle and address the issue by studying the factors carefully. Sometimes fine details such as these need the researchers to be vigilant before finding out a solution.

posted on Wed, 08/27/2014 - 10:54pm

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