Method of making stable, homogeneous potassium hydride dispersions
A stable, homogeneous dispersion of potassium hydride is formed by reacting a mixture of wax and potassium metal with hydrogen.
1. A method of making a stable, homogeneous dispersion of potassium hydride in a wax that is solid at room temperature, wherein the method comprises mixing potassium metal and the wax under an atmosphere comprised of hydrogen at a temperature effective to melt the wax and the potassium metal and for a time effective to convert the potassium metal to potassium hydride.
2. The method of claim 1 , wherein the wax is paraffin wax.
3. The method of claim 1 , wherein in an initial step solid portions of potassium metal are combined with melted wax.
4. The method of claim 1 , wherein the temperature is at least about 80° C.
5. The method of claim 1 , wherein the mixing is conducted in a vessel under a head pressure of hydrogen gas of at least about 500 psi.
6. The method of claim 1 , comprising an additional step of cooling to a temperature effective to solidify the wax.
7. The method of claim 1 , comprising an additional step, following conversion of the potassium metal to potassium hydride and the formation of a mixture of melted wax and potassium hydride, of cooling the mixture while continuing to mix the mixture so as to maintain a homogeneous distribution of the potassium hydride.
8. The method of claim 1 , wherein the wax has a melting point range of at least about 2° C.
9. The method of claim 1 , wherein the dispersion of potassium hydride in wax exhibits a soft ductile phase over a temperature range above ambient room temperature.