"Spillover hydrogen" is a subset of 'adsorption spillover' In the case catalytic or adsorbent systems where a metal species is dispersed upon a support (or carrier) material (often quasi-inert oxides, such as alumina or silica), it is possible for an adsorptive species to indirectly adsorb to the support surface under conditions where such adsorption is thermodynamically unfavorable.
SIDE NOTE "thermodynamically unfavorable" is not quite "overunity" in itself, but is interesting in the context of "negative energy". ( to be explained). The presence of the metal serves as a lower-energy pathway for gaseous species to first adsorb to the metal and then diffuse on the support surface. This is possible because the adsorbed species attains a lower energy state once it has adsorbed to the metal, thus lowering the activation barrier between the gas phase species and the support-adsorbed species. Hydrogen spillover is the most common example of adsorptive spillover. In the case of hydrogen, adsorption is most often accompanied with dissociation of molecular hydrogen (H2) to atomic hydrogen (H), followed by spillover of the hydrogen atoms. The spillover effect has been used to explain many observations in heterogeneous catalysis and adsorption (see, for example, Rozanov and Krylov 1997), and has been proposed as a means of efficient hydrogen storage. END of Wiki quote Why is this phenomenon related to LENR? . and 'related' could be an understatement ! Spillover could end up being the heart and soul of gas-phase LENR - the missing link that finally cracks the case, so to speak. My thinking is that spillover is the precursor step to "pychno" or dense hydrogen (deuterium) and/or Rydberg matter. It could also be what Mills misidentifies as being "below ground state". BTW although the hydrogen molecule is not bosonic - the monatomic atom would be bosonic in principle - but catch-22 you seldom see it listed as such, because normally monatomic hydrogen has an extremely short lifetime - if indeed it is not an abstraction in normal chemistry. That is. IF . it is not first involved in the spillover/densification process. Being a boson can be all-important since bosons with the same energy can occupy the same place in space, and spillover gets them part of the way there. Next they need to lose kinetic energy to get to the same energy state. How can that happen? Well, I will save this next key detail for the next installment of "Phrase of the Day": "negative energy". Negative energy is colder than cold, and it is to be found in many mundane places - notably the Casimir Cavity. Or so it is claimed. Gene Mallove would be pleased, as it resonates with "Fire from Ice". BTW - if you haven't seen it, here is his Memorial Website: http://www.eugenemallove.org/ Jones
