[NewCandle] squeeze that hydrogen!

[Nick Reiter]

Herro NC

Been continuing on with comparing the hydrolysis gas
evolution rates of tightly rolled Al foil versus
random crinkled and shredded.  There is some
interesting stuff going on here - after this weekend I
may have some better numbers, but so far:

1.  In a pure water system, which ultimately self
clamps with hydroxide capping, the rolled Al goes
through a period of much higher gas evolution spouting
from the inter-turn space, though it caps off somewhat
before the random foil system.  Much different
profile, though, and not one I would predict if I were
just considering water diffusion area and surface
exposure.  One would suspect that a tightly rolled Al
foil mass would be a long slow low level gas generator
that would cap off when the turns of the foil clog
together with hydroxide.  Instead, there seems to be
some vigorous activity going on in the thin gap
between turns.

2.  I'm running the comparisons right now using an
alkaline water bath (.1M NaOH)  Even more dramatic
differences look like they are showing up, but I'm
only 2 hours into it.

3.  Sam Faile has been looking at some enhancement of
the pure water hydrolysis by use of long twisted foil
ropes wrapped into his novel coil shapse (such as the
caduceus and caduceus-virtual)  Still awaiting some
more definitive word from him on this.

NR


 
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