A new (and potentially real) way to produce hydrogen from water

A report in Science News today describes the results of an extremely detailed molecular simulation (full non-relativistic quantum mechanics) which shows how small clusters of (less than two dozen!) aluminum atoms can catalyze the dissociation of water into hydrogen with very high efficiency.  The paper has apparently been accepted by Physical Review Letters, but there's nothing up on arXiv :-( Before the alternative-energy fringe starts jumping up and down, the big roadblock to this mechanism is how to fabricate and distribute aluminum atomic clusters (called "superatoms" in the report; sigh...).  Making "nanoscale" (another annoying word...) clusters of atoms usually involves high temperatures and vacuum systems.   Together, those will consume substantially more energy than you recover from making and burning the hydrogen. However, if that roadblock can be overcome, then this does become a viable technology for fuel cells:  fill a tank with water, pour in a pouch (or bucket) of aluminum clusters (magic pixie dust :-), and hydrogen starts bubbling out.  It will be interesting to see how this shakes out Oh, and the simulation makes cool pictures, too!

Posted by kelseymh 8 years ago


Winnie the pooh mental disorders???

I'm sorry if this offends anyone but i think everyone in pooh bear has a mental disorder you decide put what you think below please =) enjoy! Pooh Bear: Eating Disorder Piglet: Social Anxiety Disorder Tigger: ADHD Rabbit: OCD Owl: Narcissistic Personality Disorder Eeyore: Depression Kanga and Roo: Dissociative Personality Disorder Christopher Robin: Schizophrenia What do you think?

Posted by Dusk Shadows 5 years ago


What's the difference between an electric boiler and an electrolyzer?

Backstory: I don't understand how they create steam without hydrogen and oxygen. I've been researching the prior art on electric boilers. This involves the type that passes the current through the water. Here's one of many examples: Electric Boiler There are also jet flow boilers which seem to do the same thing. I thought it might be the ac current instead of dc which allows the creation of steam without the dissociation of the water molecules. I've actually been trying to create steam this way. But this has been driving me crazy. I started experimenting with a AA. I start small. Safety first. :-) Then a AA with a disposable camera circuit. It will charge up a cap to 319 Volts. Then I jumped to 9V, 12V car battery, 120VAC, then rectified 120VAC with a bridge rectifier. So far, I've just used regular tap water. My meter reads open circuit.  I've tried a couple different electrode materials for the 12V in the 2 gallon container: plated screws, aluminum plates, spark plug. The only thing I can think of is to decrease the size of the container, dramatically. Even then, I would still have the problem of dissociation. I've been told to throw in some chemicals to decrease the resistance. But that's how to get more hydrogen production as well, from what I've read.  I would think it should go something like this: As I increase the power, heat would rise, proportionally, till it starts becoming a vapor. As I continue to increase the amount of power, the moisture of the gas decreases as the hydrogen and oxygen content increases. That's not what happens. Production starts almost immediately, with very little heat. No steam. I'm going to try decreasing the chamber next, but I still think I'm going to be getting hydrogen and oxygen, just with a higher moisture content as the water starts to heat up.

Asked by Vorenus 6 years ago