SRI International in Menlo Park, California to host colloquium on LENR [UPDATE#2 - Sveinn Ólafsson presentation slides]

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Probably sort of off-topic here, but does anybody have any idea whether the pressure wave from electrical discharges caused by a standard spark plug would be able to displace low pressure hydrogen in an small enclosed cavity (eg a tube) in any relevant way?

This makes me also wonder if:

- Celani got the idea of using CuNi wires from Rossi's old patent.

- Rossi used in some cases copper tubes on purpose so that he could employ CuNi based catalysts for hydrogen dissociation while claiming (in his blog, interviews, patent documentation, but NOT in patent claims) it was contamination (potentially, same for stainless steel tubes) or the result of nuclear reactions.

- Nickel powder hasn't actually been a smokescreen all along. The point seems to be having hydrogen continuously dissociating and recombining from catalysts in a hydrogen-satura ted environment with the action of pressure pulses and varying temperatures (but not so high that catalysts are destroyed).

@EccoEcco

Yes - I was reading through just these points earlier today.

@Robert Greenyer: to be frank right now I have no idea of what else he might be possibly creating in-situ, so I'm looking forward to reading that.

I'd like to add that the small but sizable amounts of V and Mo in the Lugano ash particles (from the digitized TOF-SIMS analysis, which hopefully I've correctly decoded) might be giveaways that some sort of dehydrogenation catalyst was indeed used. Oxides of these metals tend to come up often in the dehydrogenation catalyst patents I've seen so far. Notably, V2O5 (vanadium pentoxide) is used in this dehydrogenation catalyst patent by the Shell Oil company: www.freepatentsonline.com/.../ (scroll down to Table I). The version without vanadium is called "Shell 105" (EDIT: corrected; I've previously written the opposite).

In the end I don't think the exact composition matters here as long as the catalyst does its job. However, it could be that several different alkali promoted, iron oxide dehydrogenation catalysts have been used in Rossi experiments, perhaps even at the same time.

As a side note, the one described in example 22 here:
www.freepatentsonline.com/.../

Might be similar in composition to the HTED-04 one planned to be used in upcoming MFMP experiments.

alibaba.com/.../...
Quote:

The Composition of the Catalyst according to our invention comprises: iron oxide, potassium oxide, calcium and magnesium, cerium oxide, other promoters and stabilizers, but no molybdenum and chromium oxide.

@Robert Greenyer: a thought. All patents and written information published so far by Rossi have always omitted that it's quite likely he's used a typical iron oxide dehydrogenation catalyst all along for (at the very least) efficiently dissociating molecular hydrogen into atomic hydrogen.

However, the chemical composition of these catalysts can look like that of stainless steel (with Fe, Cr, Mn content).

I'm wondering if those who somehow managed to replicate the experiment (assuming no errors or something worse) serendipitously created such catalyst in-situ by using a stainless steel fuel container modified with heat, stress, embrittlement and contaminants from the initial atmosphere and possibly enhanced with Li from the LiAlH4.

If this is the case, then when Rossi patents mention stainless steel containers being used for the reaction chamber (like AISI 304, 310, and 316 as in Industrial Heat patents) this might be actually needed, in a way, for including the "secret catalyst" without letting others know.

en.wikipedia.org/.../...

Since Rossi obviously knows what the "secret" catalyst is - assuming it's actually the one I'm referring about - he wouldn't need in practice to create it in-situ from stainless steel, as he could simply include it in the fuel. The catalyst could then pass as SS contamination in the ash analysis.

@Robert Greenyer: very good to know, although it might still not be enough. Besides proper catalyst preparation, a method for achieving a continuous hydrogen flux, and one for triggering are still missing. For the former I suggested some kind of thermoacoustic resonant system, but Axil axil seems to be implying that the Lugano tube could have worked like a sort of heat pipe. Food for thought. See here on the subject:

en.wikipedia.org/.../Heat_pipe

A reversible hydride should work too, but I don't think it was used in Lugano, judging by temperatures (even assuming they were 30% lower than reported) and their behavior from plot 5 (page 23).

* * *

Again on the Lugano powder analyses, and again interestingly, the two ash particles analyzed with TOF-SIMS were apparently rich in alkali metals, especially Na and K. I've recently learned that alkali metal oxides too have a low vapor pressure and therefore that it is possible that after long term heating at high temperature the potassium content in the fuel could have deposited on the internal reactor walls. Hopefully more skilled people than I am will check out for themselves and confirm the data.


i.imgur.com/Xodpznr.png

Furthermore, in the 2013 Edström fuel analysis there are large particles in the ash which seem consistent with some sort of styrene catalyst being used (possibly Fe2O3, Cr2O3, C), but with very little to no alkali content (K or Na). I suggested that if I were Rossi and wanted to obfuscate things up a bit for third party analysis, I might have heated the ash in a hard vacuum in order to make most alkali content evaporate.

Edström fuel analysis
lenr-forum.com/.../...

High temperature vaporization behavior of oxides. I. Alkali metal binary oxides
www.nist.gov/.../jpcrd241.pdf