Bruno Berger <mailinglists@xxxxxx> wrote on Sep 16, 2016 at 7:34 AM:
We tested the catalyst we normally use for Tridyne with H2O2 once. The
catalyst bed consisted of 2mm Al2O3 pellets with a very high internal
surface of 200m^2 per gram. The pellets were coated with a mix of
platinum and other precious metals. The pellets were very active but
fell apart after seconds. I don't think this was because of the thermal
stress. The problem was IMO that the H2O2 entered the porous pellets as
a liquid and the decomposed H2O2 (so, the hot H2O steam and O2) cracked
the ceramics because of the much higher specific volume which tried to
expand inside the pellets.
