https://en.wikipedia.org/wiki/Hydrogen_ion_cluster
On Wed, Jan 27, 2016 at 2:45 PM, Bob Cook <[email protected]> wrote: > Jones and Axil-- > > The paper Mats identified notes in some detail the effect on *nano* size > particles and how surface effects influence the uptake of hydrogen. Their > loading in nano particles seems to occur much quicker than that suggested > by the earlier patent. It is suggested that the avalanche phenomena is > apart from normal H loading associated with larger lattice structures. > > From reading the Wolf item out of SRL, I do not see any reference to nano > sized Pd particles. > > Axil, how did you determine that the reference to cluster means the > formation of nanoparticles? I think you are jumping to conclusions. > > Bob Cook > > *From:* Axil Axil <[email protected]> > *Sent:* Wednesday, January 27, 2016 11:20 AM > *To:* vortex-l <[email protected]> > *Subject:* [Vo]:Re: [Vo]:RE: [Vo]:Hydrogen uptake causes molecular > “avalanches” in palladium > > Reference: > > psc.edu/science/Wolf/Wolf.html <http://www.psc.edu/science/Wolf/Wolf.html> > > Onset of the beta phase in palladium hydride at 300 degrees Kelvin. This > phase change occurs as the concentration of hydrogen atoms (yellow) in the > palladium (purple) increases. At early stages (the alpha phase), hydrogen > atoms randomly populate small interstices in the lattice structure. At a > critical point, the lattice expands, allowing hydrogen to *cluster at > higher density*, as visualized here. This image shows the lattice from > the (001) direction. > > The term cluster means the formation of nanoparticles. > > http://www.psc.edu/science/Wolf/neat3-lg.GIF > > > > On Wed, Jan 27, 2016 at 11:18 AM, Jones Beene <[email protected]> wrote: > >> *From:* Mats Lewan >> >> Don’t know if this contains new findings. Might be relevant for Pd+H >> systems, and maybe also Ni+H systems. >> >> *"As the hydrogen is taken up over time, there is eventually a sudden >> reconfiguration of the hydrogen distribution within the lattice, a process >> colloquially referred to as “avalanching.” "* >> >> >> *http://www.anl.gov/articles/hydrogen-uptake-causes-molecular-avalanches-palladium* >> <http://www.anl.gov/articles/hydrogen-uptake-causes-molecular-avalanches-palladium> >> >> >> Mats, as far back as 1938, achieving this “sudden reconfiguration” of >> palladium was known and patented. Ironically, it takes a long time to >> reach the stage of “sudden” which is one reason why results with >> palladium electrodes are not assured. >> >> http://www.google.com.gh/patents/US2139529 >> > >
