Apologies to RB, whose post ended up at the top of this thread. Since a cannot post above it, and want this info from Jed at the top of the thread, a hijack seems to be the answer. This thread is meant for Mizuno replication posts only, so for convenience I am qoiting Jed's post with links from the top of the first Mizuno announcement. Alan
"In the upcoming ICCF22 conference, Tadahiko Mizuno will report increased excess heat with nickel mesh coated with palladium. The results are dramatic, so we decided to upload a preprint of his paper. To understand the calorimetry, you have to read his ICCF21 paper. Unfortunately, the ICCF21 Proceedings have not yet been published. So I decided to upload preprints of both papers:
ICCF21: Mizuno, T. and J. Rothwell, Excess Heat from Palladium Deposited on Nickel (preprint). J. Condensed Matter Nucl. Sci., 2019. 29
ICCF22: Mizuno, T. and J. Rothwell. Increased Excess Heat from Palladium Deposited on Nickel (Preprint). in The 22nd International Conference for Condensed Matter Nuclear Science ICCF-22. 2019. Assisi, Italy
Here is the abstract for the latest paper:
We have developed an improved method of producing excess heat with nickel mesh coated with palladium. The new method produces higher power, a larger output to input ratio, and it can be controlled effectively. With 50 W of input, it produces ~250 W of excess heat, and with 300 W it produces ~2 to 3 kW. This paper is a comprehensive description of the apparatus, the reactant, and the method. We hope this paper will allow others to replicate the experiment.
JR's post ends here, below isd robert bryant 's work
The material specs of the reactor body are important for some chemical reactions
elevated temperatures (100−250 °C) under reducing atmosphere (hydrogen gas at 800 psi) leads to the formation of insoluble inorganic precipitates,
identified as mixed chromium oxides by scanning electron microscopy X-ray fluorescence (SEM-XRF).
A catalytically active metal surface is generated,
Ǻ thick chromium oxide layer that normally passivates 316 Stainless Steel (316SS) against corrosion is etched away,
and the reactor body itself becomes an active hydrogenation catalyst. The effect is specific to aqueous acidic medium.
I'd would stay with 316 rather than 304..even though this is not a chemical reaction
just in case the molybdenum is a factor.