Zircconium metal may be a good getter of H at around 950 degrees F. If it were incorporated into the Alumina reactor vessel in the outer portion it very well may create a concentration gradient for H to draw it out through the alumina. Zr + H is an exothermic reaction I believe and therefore this added heat would allow lower input heat at the center of the reactor. Good evaluation of the temperature profile would be necessary in order to understand what was happening. However the concentration of Zr could be controlled to reduce or increase the gettering effect for the H to prevent an over abundance and a runaway reaction.
It could work much like a burnable poison in a fission reactor to limit neutron flux and fission reactions. Another scheme could be to include a Zr tube cooled to about 950 degrees F at the center of the reactor. It could also work to extract heat from the reaction of the fuel and thereby limit the reaction rate. Another advanced idea would be to add the fuel powder into a solid matrix of a metal conductor that does not melt at the reaction temperature to provide a good heat transfer mechanism to hold the temperature down. However a metal vapor may also work as a good heat transfer agent to hold the temperature down. Bob Cook Sent from Windows Mail From: Axil Axil Sent: Tuesday, February 10, 2015 9:36 PM To: [email protected] The way Lithium hydride give off or absorbs Hydrogen is a function of the pressure of hydrogen that LiH is under . High enough pressure will get LiH to perform as you want at 1057. On Wed, Feb 11, 2015 at 12:05 AM, [email protected] <[email protected]> wrote: Pity we can't identify a moderator which begins consuming or absorbing H at 1057. Sent from my Verizon Wireless 4G LTE Smartphone
